WO2010016429A1 - 電気・電子部品用銅合金材料 - Google Patents
電気・電子部品用銅合金材料 Download PDFInfo
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- WO2010016429A1 WO2010016429A1 PCT/JP2009/063615 JP2009063615W WO2010016429A1 WO 2010016429 A1 WO2010016429 A1 WO 2010016429A1 JP 2009063615 W JP2009063615 W JP 2009063615W WO 2010016429 A1 WO2010016429 A1 WO 2010016429A1
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
- C22C9/06—Alloys based on copper with nickel or cobalt as the next major constituent
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/08—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of copper or alloys based thereon
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/02—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of metals or alloys
- H01B1/026—Alloys based on copper
Definitions
- the present invention is applied to connectors and terminal materials for electrical and electronic equipment, particularly high frequency relays and switches for which high conductivity is desired, or electrical and electronic parts such as connectors, terminal materials and lead frames for automobiles.
- the present invention relates to a copper alloy material.
- connectors for electronic and electrical equipment include brass (C26000), phosphor bronze (C51910, C52120, C52100), beryllium copper (C17200, C17530), and corson copper alloys (hereinafter simply referred to as “copper alloys”).
- copper alloys For example, C70250 has been used.
- IACS integrated arithmetic element
- a material having high conductivity has excellent heat conduction characteristics, so that a material such as a CPU (integrated arithmetic element) socket or heat sink that requires heat dissipation also has high conductivity.
- a material having high conductivity and high strength are required.
- a copper alloy using an intermetallic compound composed of cobalt (Co) and silicon (Si) in consideration of strength, bending workability, and conductivity (thermal conductivity) is attracting attention.
- a copper alloy that essentially contains Co and Si and related techniques are known as follows.
- Patent Document 1 describes an alloy that essentially contains Co, Si, Zn (zinc), Mg (magnesium), and S (sulfur). The object in Patent Document 1 is to improve hot workability.
- Patent Document 2 describes an alloy containing Co, Si, Mg, Zn, and Sn (tin).
- Patent Document 3 describes an alloy containing Co, Si, Sn, and Zn as essential components. Incidentally, Patent Document 2 and Patent Document 3, precipitates of Co and Si for (compound) is described with Co 2 Si compound.
- Patent Document 4 describes a Cu—Co—Si alloy. The use of the alloy of Patent Document 4 is a lead frame, and it is described that the type of alloy is a precipitation strengthening type alloy.
- Patent Document 5 describes that the size of inclusions precipitated in a Cu—Co—Si alloy is 2 ⁇ m or less.
- Patent Document 6 describes that a Co 2 Si compound is precipitated in a Cu—Co—Si alloy.
- Patent Documents 1 to 6 all describe only one type (or one size) of an intermetallic compound composed of Co and Si.
- Corson copper containing Ni and Si as essential additive elements, there is a knowledge that when two or more kinds of intermetallic compounds are dispersed in a copper alloy, bending characteristics and the like are improved.
- Patent Documents 7 to 11 are known.
- Patent Document 1 aims to improve hot workability, and there is no description of precipitates (compounds) of Co and Si, and there is no description of strength and conductivity.
- Patent Document 2 there is no description that recrystallization treatment is performed, and it is considered that bending workability is poor.
- Patent Document 3 shows a comparatively low value of conductivity of 30% IACS or less in the embodiment.
- Patent Document 4 describes a precipitation strengthened alloy, but does not describe a specific compound or its size. Moreover, there is no description that the recrystallization process is performed, and the bending workability is considered to be poor.
- Corson coppers having Ni and Si as main elements. Since Corson copper and Cu—Co—Si alloy have different components, there are differences such as different temperatures for solution treatment. For example, in the case of Corson copper, when the Ni content is 3 mass% or more, a solution treatment temperature of about 900 ° C. is required, but in the case of a Cu—Co—Si alloy, the amount of Co is about 900 ° C. However, it has been found that only about 1.0 to 1.2 mass% can be sufficiently subjected to a solution treatment.
- Corson copper with an Ni content of 3 mass% or higher is practically difficult to have a conductivity of 20% IACS or higher when it is desired to obtain high strength and bending properties, and a copper alloy with high conductivity can be obtained. Can not. In other words, Corson copper and Cu—Co—Si alloy have a large difference in solution treatment temperature and characteristics as an alloy, and a new technology that is not an extension of the prior art is required.
- the present inventors have added two or more kinds of precipitates (compounds) in a Cu—Co—Si based copper alloy in order to satisfy simultaneously high conductivity, high strength, and good bending workability in the copper alloy material.
- a specific suitable relationship with the crystal grain size was found by dispersing and controlling the size of the precipitates (and the density if necessary), and further studies were made to complete the present invention.
- a copper alloy material for electrical and electronic parts containing Co and Si as additive elements Compound A composed of Co and Si having an average particle size of 5 nm or more and less than 50 nm is dispersed, and further, Compound B having an average particle size of 50 nm or more and 500 nm or less that does not contain one or both of Co and Si, and both Co and Si And at least one compound selected from the group consisting of Compound C having an average particle size of 50 to 500 nm and further containing Compound D and Co and Si having an average particle size of 50 to 500 nm.
- a copper alloy material for electrical and electronic parts wherein the copper alloy material is dispersed and has a crystal grain size of 3 to 35 ⁇ m and a conductivity of 50% IACS or more.
- the copper alloy material for electric and electronic parts according to (2) contains 0.05 to 1.0 mass% in total of at least one selected from Al, Ag, Sn, Zn, Mg, Mn, and In, and the balance is made of Cu and inevitable impurities.
- the copper alloy material for electric and electronic parts according to (2) contains 0.05 to 1.0 mass% in total of at least one selected from Al, Ag, Sn, Zn, Mg, Mn, and In, and the balance is made of Cu and inevitable impurities.
- the copper alloy material for electric and electronic parts according to (2) contains 0.05 to 1.0 mass% in total of at least one selected from Al, Ag, Sn, Zn, Mg, Mn, and In, and the balance is made of Cu and inevitable impurities.
- the copper alloy material for electric and electronic parts according to (2) contains 0.05 to 1.0 mass% in total of at least one selected from Al, Ag, Sn, Zn, Mg, Mn, and In, and the balance is made of Cu and inevitable impurities.
- the electrical and electronic device according to any one of (1) to (5), wherein the Co content is 0.4 to 2.0 mass% and the Si content is 0.1 to 0.5 mass%. Copper alloy material for parts.
- the electric / electronic device according to any one of (1) to (6), wherein an average cooling rate from a solid phase temperature to 500 ° C. during ingot production is 5 to 100 ° C./sec Copper alloy material for parts.
- the “average particle diameter (size) of the precipitate (compound)” is the average particle diameter of the precipitate determined by the method described later.
- the “crystal grain size” is a value measured based on JIS-H0501 (cutting method) described later.
- the present invention optimizes the crystal grain size by controlling two or more types of precipitates (compounds) in a Cu—Co—Si alloy exhibiting high conductivity, and has high conductivity, high strength, bending work It is possible to provide a copper alloy material suitable for use in electrical and electronic parts having excellent properties.
- the “copper alloy material” means a copper alloy material (which means a mixture of each component element of a copper alloy having no concept of shape) having a predetermined shape (for example, plate, strip, foil, rod, It means something processed into a line).
- the “base copper alloy” means a copper alloy not including the concept of shape.
- plate material and a strip are demonstrated as a preferable specific example of copper alloy material, the shape of a copper alloy material is not restricted to a board
- the electrical conductivity is 50% IACS or more, and the relationship between the tensile strength and the bending workability is bending when the tensile strength is 550 MPa or more and less than 650 MPa.
- R / t ⁇ 0.5 which is a guideline for workability, R / t ⁇ 1 when the tensile strength is 650 MPa or more and less than 700 MPa, R / t ⁇ 2 when the tensile strength is 700 MPa or more and less than 750 MPa, and tensile strength Is preferably 750 MPa or more and less than 800 MPa, it is preferable that R / t ⁇ 3.
- R / t means the result of a W-bending test at a bending angle of 90 ° in accordance with the Japan Copper and Brass Association technical standard “Evaluation method for bending workability of copper and copper alloy sheet strip (JBMA T307)”. Then, the plate material cut in the vertical direction of rolling is subjected to a bending test at a predetermined bending radius (R), and the limit R at which the crack does not occur at the apex is obtained, and normalized by the thickness (t) at that time It is the value. In general, the smaller the R / t, the better the bending workability. In the copper alloy material for electrical and electronic parts of the present invention, the electrical conductivity is 50% IACS or more.
- the conductivity is more preferably 55% IACS or more, and even more preferably 60% IACS or more.
- the tensile strength and the bending workability (R / t) have the above relationship. Further, the lower limit of the bending workability (R / t) is zero.
- the copper alloy described here is an example in which the intermetallic compound is one kind of compound containing Co and Si.
- a so-called precipitation-type copper alloy is formed in which an intermetallic compound composed of Co and Si is precipitated.
- the first heat treatment is called a solution (or recrystallization) treatment or a homogenization treatment, and a heat treatment is performed at a relatively high temperature for a short time.
- the second heat treatment is called aging heat treatment or precipitation treatment, and is performed at a temperature lower than the solution treatment temperature and for a long time.
- the first heat treatment is performed using a continuous annealing furnace in which a rolled copper alloy sheet is passed through a heat treatment furnace. This is because adhesion occurs when heat treatment is performed at a high temperature while the thin plate is wound in a coil shape, and if the subsequent cooling rate is slow, the dissolved element causes precipitation without control, resulting in precipitation that does not contribute to strength. It is. In addition, since a high temperature furnace is passed through the plate, there is a concern that the plate may be cut. Therefore, heat treatment is performed for a short time.
- the temperature of the heat treatment furnace in which the copper alloy thin plate is wound in a coil shape is controlled.
- heat treatment is carried out for a relatively long time (specifically, several minutes to several tens of hours), and the optimum precipitate (compound) is sufficiently dispersed by solid phase diffusion treatment.
- the temperature during the solution treatment is increased as much as possible to increase the amount of solute elements to be dissolved in the copper matrix phase, and the subsequent aging heat treatment (second heat treatment)
- the copper alloy is strengthened by depositing precipitates (compounds) using the difference in temperature between the two.
- the higher the temperature of this solution treatment (first heat treatment) the more the amount of solute element dissolved (this increases the amount of precipitation that precipitates during the subsequent second heat treatment).
- Heat treatment is advantageous, but conversely, coarsening of the recrystallization structure that occurs at the same time adversely affects bending workability.
- the crystal grain size is coarse with a copper alloy with high strength, when bending is performed, cracks (cracks) occur in the part, wrinkles (rough skin) unevenness becomes large, and the necessary contact pressure is It cannot be obtained, or the contact portion becomes unstable, so that it is not a copper alloy material suitable for applications such as connectors and terminals.
- the grain size at the time of recrystallization becomes coarser as the temperature increases, and as described above, if a high temperature heat treatment is performed in the first heat treatment when trying to increase the solute element, the bending workability deteriorates conversely. .
- it can be said that it is extremely difficult to satisfy all of high conductivity, high strength, and good bending workability in a copper alloy material in which the intermetallic compound is one kind of compound containing Co and Si.
- a technique for dispersing two or more types of intermetallic compounds having different sizes in a Cu—Co—Si based alloy is developed. did.
- a fine compound of 5 nm or more and less than 50 nm made of Co and Si is a compound that contributes to precipitation strengthening.
- a coarse compound of 50 nm or more and 500 nm or less does not contribute to precipitation strengthening and is a compound that exhibits an effect during the high-temperature solution treatment. This coarse compound cannot be dissolved in the copper matrix even during the high-temperature solution treatment and exists in the copper matrix. Therefore, even if grain growth occurs, the coarse compound becomes an obstacle, causing a state in which grain boundary migration is difficult to occur, and as a result, coarsening of the crystal grain size is suppressed.
- the solidified ingot is used as the starting material, and hot rolling, cold rolling, and various heat treatments are performed to complete the copper alloy material that has the desired characteristics.
- Various sizes of intermetallic compounds are formed during solidification and hot rolling of the ingot, during its cooling, and during various heat treatments and during its cooling. It is processing.
- the solution treatment is performed before the aging heat treatment, but only the coarse compound remains during the solution treatment, and the others are dissolved in the copper matrix. That is, only coarse compounds remain in the copper matrix after the solution treatment. Fine precipitates (compounds) are precipitated by the aging heat treatment in the next step.
- the size and density of the coarse compound that has been exposed to a high temperature in the pre-heat treatment does not change.
- a solution heat treatment and an aging heat treatment are continuously performed, and a case where a cold rolling process is sandwiched between them, but in any of these heat treatment processes, there is a change in the size and density of the coarse compound. No.
- Compound A having an average particle size of 5 nm or more and less than 50 nm which is a compound that contributes to precipitation strengthening, is a compound that precipitates by aging heat treatment and improves strength.
- the compound A is preferably Co 2 Si, but may contain a compound that does not have a composition ratio of Co 2 Si (for example, CoSi, CoSi 2, etc.). If the average particle size of compound A is 5 nm or more, the precipitation hardening amount is sufficient, and if the average particle size is less than 50 nm, the strength is sufficient without the disappearance of matching strain.
- the size of the compound A is defined as 5 nm or more and less than 50 nm, and a desirable size is 10 nm or more and 30 nm or less.
- a desirable size is 10 nm or more and 30 nm or less.
- compound B is a compound that does not contain one or both of Co and Si, and this contributes little to the strength.
- the composition of compound B include Co-x, Si-x, and xy.
- x and y are elements other than Co and other than Si. If this compound B dissolves and disappears in the copper matrix at the solution treatment temperature, it cannot be used to control the crystal grain size of the base copper alloy. Therefore, this compound B is a compound having a melting point higher than the solid solution temperature (that is, the melting point) of Co 2 Si which is the main element of the compound A.
- the average particle size of Compound B is 50 nm or more and 500 nm or less, the effect of suppressing (pinning) grain boundary migration at a high temperature is exhibited.
- Compound B is an inconsistent compound because it has an average particle diameter of 50 nm or more.
- Compound B preferably has an average particle diameter of 50 nm to 500 nm.
- the average particle size of compound B is more preferably 100 nm or more and 300 nm or less.
- the compound C is a compound containing both Co and Si and other elements, and this also contributes little to the strength.
- the difference from the compound B is a compound having a composition such as Co—Si—x or Co—Si—xy.
- x and y are elements other than Co and other than Si.
- Compound C is also a compound having a melting point higher than the solid solution temperature of Co 2 Si (that is, the melting point) because it is desired that the compound C is dissolved in the copper matrix during the high-temperature solution treatment and does not disappear.
- the average particle size of Compound C is preferably 50 nm or more and 500 nm or less in order to obtain the same effect as Compound B.
- the average particle diameter of the compound C is more preferably 100 nm or more and 300 nm or less.
- the compound B or the compound C may exist in a size of 5 nm or more and less than 50 nm, which is the same average particle diameter as the compound A.
- Compounds having the same composition as compound B or compound C having an average particle diameter of 5 nm or more and less than 50 nm are substituted with Co as the main element when the element once dissolved in the solution treatment is precipitated.
- x Fe, Ni, Cr
- the compound D is a compound composed only of Co and Si, and the component A is the same as that of the compound A.
- there are compounds that are different in size and do not have a composition ratio of Co 2 Si for example, CoSi, CoSi 2 ).
- Compound D is different from Compound A because of its coarse size, so solution treatment at high temperature and short time does not have enough time for solid solution in the parent phase, and as a result, it remains in the copper parent phase and suppresses grain growth. Demonstrate the function to do.
- the compound D often has an angular shape, but its particle size is defined as an average particle size.
- the average particle size of compound D is preferably 50 nm or more and 500 nm or less because compound D seeks the same effect as compound B or compound C.
- the average particle diameter of the compound D is more preferably 100 nm or more and 300 nm or less.
- the compound B, compound C, and compound D are identified by analyzing their components using an EDS (energy dispersive detector) attached to a transmission electron microscope to determine which compound (precipitate) is. Its size can be measured.
- the reason for setting the crystal grain size of the base copper alloy in the present invention to 3 to 35 ⁇ m is that if the crystal grain size is 3 ⁇ m or more, recrystallization is sufficient and an insufficient recrystallization portion is observed. This is because there is no fear of mixed grains containing crystals and bending workability is improved. Further, if the crystal grain size is 35 ⁇ m or less, the grain boundary density is high, bending stress (strain applied) can be sufficiently absorbed, and workability is improved.
- the crystal grain size of the copper alloy is preferably 10 nm or more and 30 ⁇ m or less.
- the electrical conductivity of the material is 50% IACS or more. This characteristic is preferably achieved by, for example, setting the Co content to 0.4 to 2.0 mass%, the Si content to 0.1 to 0.5 mass%, and precipitating a Co 2 Si intermetallic compound. It is a characteristic obtained.
- the ratio of the dispersion density of each compound is preferably 0.0001 ⁇ ⁇ (dispersion density of compound B + dispersion density of compound C + dispersion density of compound D) / dispersion density of compound A ⁇ ⁇ 0.1.
- coarse compound B, compound C, and compound D that suppress the grain boundary migration of the base copper alloy may be present in combination with compound A, but the ratio of the dispersion density is preferably 0.0001 ⁇ ⁇ (dispersion density of compound B + dispersion density of compound C + dispersion density of compound D) / dispersion density of compound A ⁇ ⁇ 0.1.
- the ratio of the dispersion density of each compound is preferably 0.0001 ⁇ ⁇ (dispersion density of compound B + dispersion density of compound C + dispersion density of compound D) / dispersion density of compound A ⁇ ⁇ 0.01, More preferably, 0.0001 ⁇ ⁇ (dispersion density of compound B + dispersion density of compound C + dispersion density of compound D) / dispersion density of compound A ⁇ ⁇ 0.001.
- the number of the compound B, the compound C, and the compound D (particularly the total number thereof) is too small, deterioration of the bendability of the copper alloy material obtained by crystal grain coarsening may occur.
- the greater the number of precipitates of compound A that is, the higher the dispersion density of compound A in the copper alloy material, the higher the strength.
- the number of these compounds it is generally considered that the more the added alloy element component is, the more compounds are obtained if the conditions in the solution treatment and the aging treatment are appropriately adjusted.
- the reason why Co is set to 0.4 to 2.0 mass% is that a desired strength can be obtained as long as it is 0.4 mass% or more. This is because the solution treatment temperature falls within an appropriate range at less than%, and an extremely difficult manufacturing technique is not required.
- the stoichiometric ratio of Co 2 Si, which is the precipitation strengthening phase of this Cu—Co—Si alloy is Co / Si ⁇ 4.2, and the Si addition range is set accordingly. If the value of Co / Si is 3.5 or more and 4.8 or less, there is no practical problem.
- the copper alloy material of the present invention may contain elements other than Co and Si.
- Al, Ag, Sn, Zn, Mg, Mn, and In are characterized by solid solution in the copper matrix and strengthening. If the added amount is 0.05 mass% or more in total, the effect is obtained, and if it is 1.0 mass% or less, the conductivity is not hindered.
- a preferable addition amount is 0.2 to 0.4 mass% in total of at least one of these elements.
- Zn has the effect of improving solder adhesion
- Mn has the effect of improving hot workability.
- Addition of Sn and Mg is effective in improving the stress relaxation resistance. Although the effect can be seen even when individual Sn and Mg are added, it is an element that exhibits the effect synergistically when added simultaneously. If the added amount is 0.1 mass% or more in total, the effect is obtained, and if it is 1.0 mass% or less, conductivity is not hindered and conductivity of 50% IACS or more is ensured.
- the addition ratio of Sn and Mg is also known. In the case of Sn / Mg ⁇ 1, the stress relaxation resistance is more excellent.
- each element of Zn, Mn, Sn, and Mg has the function which becomes x and y of the compound B and the compound C, the grain boundary movement inhibitory effect as the compound B and the compound C is exhibited.
- each element of Fe, Cr, Ni, Zr, and Ti also has the function which becomes x and y of the compound B and the compound C, the grain boundary movement inhibitory effect as the compound B and the compound C is exhibited. Even if these elements are added in combination or added alone, substantially the same effect is observed. Desirable addition amount is 0.5 to 0.8 mass% in total of at least one of these elements. Even if each element of the group consisting of Al, Ag, Sn, Zn, Mg, Mn, In and each element of the group consisting of Fe, Cr, Ni, Zr, Ti are added in combination, the above-mentioned range If it is within, individual properties will not be disturbed. Examples of inevitable impurities in the copper alloy material for electric and electronic parts of the present invention include H, C, O, and S.
- the copper alloy material of the present invention can be produced, for example, by the following process.
- the outline of the main production process of the copper alloy material of the present invention is melting ⁇ casting ⁇ homogenization treatment ⁇ hot rolling ⁇ face milling ⁇ cold rolling ⁇ solution heat treatment ⁇ aging heat treatment ⁇ final cold rolling ⁇ low temperature annealing. . Aging heat treatment and final cold rolling may be performed in reverse order. Further, the final low-temperature annealing (strain relief annealing) may be omitted.
- the steps other than those specifically mentioned here can be carried out by a conventional method.
- the average cooling rate from the solid phase temperature to 500 ° C. during the production of the copper alloy ingot is 5 to 100 ° C./second. It contributes to precipitation. If this average cooling rate is 5 ° C./second or more and 100 ° C./second or less, Compound B, Compound C, and Compound D are appropriately formed, and as a result, the crystal grain size of the base copper alloy should be in an appropriate range. Can do.
- the solid phase temperature is a temperature at which solidification starts, and since it becomes a temperature zone in which compound A precipitates at a temperature lower than 500 ° C., the lower limit of the temperature range was set to 500 ° C.
- the strength may decrease due to an increase in coarse precipitates.
- the solution heat treatment temperature is preferably 800 to 950 ° C. when the Co content is 0.4 to 1.2 mass%, 900 to 950 ° C. when 1.3 to 1.5 mass%, and 1.3 to 2%. If it is 0 mass%, sufficient solution and recrystallization can be performed at 900 to 1000 ° C., respectively.
- the crystal grain size of the base copper alloy is determined by the heat treatment at this temperature. Moreover, it is preferable that the cooling rate from the temperature is rapid cooling of about 50 ° C./second. If this rapid cooling is not carried out, the elements dissolved at the high temperature may cause precipitation.
- the particles (compounds) that cause precipitation during this cooling are inconsistent precipitates that do not contribute to the strength, and are also formed in the next (or next cold rolling) aging heat treatment step. Sometimes it contributes as a nucleation site, accelerates the precipitation of that part, and adversely affects the properties.
- This cooling rate means the average rate from the solution heat treatment temperature at high temperature to 300 ° C. Since a large tissue change does not occur at a temperature of 300 ° C. or lower, the cooling rate up to this temperature may be set to a predetermined cooling rate.
- an aging heat treatment is performed after the solution heat treatment (recrystallization is also performed together with the solution heat treatment) to form a Co and Si compound in the copper alloy.
- This heat treatment may be performed after the solution heat treatment or after a predetermined cold rolling.
- the aging heat treatment is preferably performed at a temperature of 500 to 600 ° C. for 1 to 4 hours after the solution heat treatment and after the final cold rolling after the solution heat treatment. In some cases, a temperature of 450 to 550 ° C. and 1 to 4 hours are preferable.
- the temperature range for the cooling rate is a cooling range from each heat treatment temperature to 300 ° C. If the lower limit of the temperature range is higher than 300 ° C, desired high conductivity cannot be obtained, and the obtained conductivity does not change even if the lower limit of the temperature range is lower than 300 ° C.
- the cooling rate after the aging heat treatment can be adjusted by controlling the temperature in a heat treatment furnace. In addition, when it wants to cool rapidly, a sample can be taken out from the heating zone of a heat treatment furnace, and it can respond by forced air cooling or water quenching.
- Example 1 Alloys containing the components shown in Tables 1 and 2 and the balance of Cu and inevitable impurities (Invention Examples No. 1 to 35, Comparative Examples No. 101 to 128) were melted in a high frequency melting furnace, Casting was performed at a cooling rate of 5 to 100 ° C./second to obtain an ingot having a thickness of 30 mm, a width of 100 mm, and a length of 150 mm. At this time, a thermocouple was set in the vicinity of the casting wall of the mold, and casting and melting were performed while measuring to create an ingot. The obtained ingot is held at a temperature of 930 to 1050 ° C.
- Step A (Solution heat treatment) -Aging heat treatment (at a temperature of 500 to 600 ° C. for 2 to 4 hours) -Cold working (working rate 5 to 25%) * After this, strain relief annealing was performed at a temperature of 300 to 400 ° C. for 1 to 2 hours as necessary.
- Step B (Solution heat treatment)-Cold rolling (working rate 5 to 25%)-Aging heat treatment (at a temperature of 450 to 550 ° C for 2 to 4 hours)
- Table 1 shows the results of Examples of the present invention
- Table 2 shows the results of Comparative Examples.
- E + 08 or the like in the item of compound density represents a power of 10 (“ ⁇ 10 8 ” in the case of “E + 08”).
- Tensile strength Three test pieces of JIS Z2201-13B cut out from the direction parallel to the rolling of the specimen (test piece) were measured according to JIS Z2241, and the average value was shown.
- b. Conductivity measurement Using the four-terminal method, the conductivity of two test pieces was measured in a thermostatic chamber controlled at 20 ° C. ( ⁇ 1 ° C.), and the average value (% IACS) is shown in Tables 1-2. It was.
- the distance between terminals was set to 100 mm.
- R of R / t is a bending radius
- t indicates a plate thickness
- a smaller value indicates better bending workability.
- the magnification of the photograph was changed depending on the size of the observed crystal grain.
- the “mixed grain” in the table is a structure in which both the recrystallized region and the non-recrystallized region (the state in which the rolled structure remains), and in the case of mixed particles, the particle size was not measured. . It is said that bending workability deteriorates when unrecrystallized exists. Therefore, mixed grains are undesirable structures. e. Cooling rate after aging heat treatment The cooling rate was adjusted by changing the weight of the material to be heat-treated or by controlling the temperature in the heat treatment furnace used.
- the amount of heat treatment is reduced at the same time, while to obtain a slower cooling rate, a dummy test
- the amount of heat treatment that was performed at the same time after putting the pieces was increased, and each was heat-treated.
- the sample was taken out from the heating zone of the heat treatment furnace, and it responded by forced air cooling or water quenching.
- the cooling rate was also adjusted by controlling the temperature in a heat treatment furnace. When the number of samples was particularly small or the cooling rate was very slow, the cooling rate was adjusted by controlling the temperature in a heat treatment furnace. f.
- the size (average particle size) of the precipitate (compound) was measured using a transmission electron microscope.
- the structure of the material after aging heat treatment was observed because it was difficult to observe due to the influence of processing strain.
- Test specimen for observation by cutting out TEM test piece from any place of heat-treated material and performing electrolytic polishing (with twin jet type electrolytic polishing apparatus) at a temperature of -20 to -25 ° C with methanol solution of nitric acid (20%) Completed the piece. Thereafter, observation was performed at an accelerating voltage of 300 kV, and three photographs having a magnification of 100000 times were arbitrarily taken with the incident direction of the electron beam being set in the vicinity of (001).
- the number of compounds A (about 100) corresponding to the specified size was determined.
- Compound B, Compound C, and Compound D were subjected to component analysis using an EDS (energy dispersive detector) attached to a transmission electron microscope, and three photographs were arbitrarily taken at a magnification of 1000 to 5000 times. Then, the number corresponding to the desired specified size was determined using the photograph. The number is 10 to 100. From these values, the dispersion density (pieces / mm 2 ) of each compound A, B, C and D was determined. In the following table, the dispersion density is simply abbreviated as density.
- compound B, C, D density (pieces / mm 2 ) indicates the total of the dispersion density (pieces / mm 2 ) of each compound, B, C, and D, but if there is a certain compound. Needless to say, it is the total of the dispersion density of the remaining compound alone or the dispersion density of the remaining two compounds.
- (B + C + D) / A” is an abbreviation of “ ⁇ (dispersion density of compound B + dispersion density of compound C + dispersion density of compound D) / dispersion density of compound A ⁇ ”.
- the examples satisfy all of strength, conductivity, and bending workability at a high level in a well-balanced manner.
- EC electrical conductivity
- TS tensile strength
- R / t bending workability
- TS is 550 MPa or more and less than 650 MPa.
- /T ⁇ 0.5
- R / t ⁇ 2 when TS is 700 MPa or more and less than 800 MPa.
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Abstract
Description
ここで、CXXXXXとはCDA(Copper Development Association)で規定された銅合金の種類である。また、%IACSは材料の導電性を示す単位であって、「IACS」とは”international annealed copper standard”の略である。
特許文献1には、CoとSiと、Zn(亜鉛)、Mg(マグネシウム)、S(硫黄)を必須に含む合金が記載されている。特許文献1における目的は熱間加工性の改善である。
特許文献2には、CoとSiと、Mg、Zn、Sn(スズ)を含む合金が記載されている。また、特許文献3はCoとSiと、Sn、Znを必須に含む合金が記載されている。なお、特許文献2および特許文献3には、CoとSiの析出物(化合物)についてCo2Si化合物との記載がある。
特許文献4には、Cu-Co-Si系合金が記載されている。特許文献4の合金の用途はリードフレームであり、合金の種類が析出強化型合金であると記載されている。
特許文献5には、Cu-Co-Si合金中に析出する介在物の大きさが2μm以下であると記載されている。
特許文献6には、Cu-Co-Si合金中にCo2Si化合物を析出させることが記載されている。
特許文献1は熱間加工性の改善を目的としており、CoとSiの析出物(化合物)については記載がなく、さらに強度や導電性についての記載がない。
特許文献2には、再結晶処理を行うとの記載がなく、曲げ加工性は悪いと考えられる。
特許文献3には、その実施例に導電率は30%IACS以下と比較的低い値が示されている。
特許文献4には、析出強化型合金と記載されているが具体的な化合物やそのサイズが記載されていない。また、再結晶処理を行うとの記載がなく、曲げ加工性は悪いと考えられる。
特許文献5および特許文献6には、材料の内側曲げ半径をR、板厚をtとした際に、R/t=1の条件で曲げ加工性を評価した例があるが、この程度のレベルでは今後要求される曲げ加工性には必ずしも対応できない場合があると考えられる。
本発明によれば、以下の手段が提供される:
(1)添加元素としてCoおよびSiを含有する電気電子部品用銅合金材料であって、
CoとSiからなる平均粒子径が5nm以上50nm未満の化合物Aが分散し、さらに、CoとSiの一方もしくは両方を含有しない平均粒子径が50nm以上500nm以下の化合物Bと、CoとSiの両方およびさらに他の元素を含有する平均粒子径が50nm以上500nm以下の化合物Cと、CoとSiからなる平均粒子径が50nm以上500nm以下の化合物Dとからなる群から選ばれる少なくとも1種の化合物が分散し、母材の銅合金の結晶粒径が3~35μmであり、かつ導電率が50%IACS以上であることを特徴とする電気電子部品用銅合金材料。
(2)添加元素としてCoおよびSiを含有する電気電子部品用銅合金材料であって、
CoとSiからなる平均粒子径が5nm以上50nm未満の化合物Aと、CoとSiの一方もしくは両方を含有しない平均粒子径が50nm以上500nm以下の化合物Bと、CoとSiの両方およびさらに他の元素を含有する平均粒子径が50nm以上500nm以下の化合物Cと、CoとSiからなる平均粒子径が50nm以上500nm以下の化合物Dが分散し、
前記化合物A~Dの分散密度の比が0.0001≦{(化合物Bの分散密度+化合物Cの分散密度+化合物Dの分散密度)/化合物Aの分散密度}≦0.1であり、
母材の銅合金の結晶粒径が3~35μmであり、かつ導電率が50%以上であることを特徴とする電気電子部品用銅合金材料。
(3)さらに、Al、Ag、Sn、Zn、Mg、Mn、Inから選ばれた少なくとも1種を合計で0.05~1.0mass%含有し、残部がCuと不可避不純物からなる、(1)または(2)に記載の電気電子部品用銅合金材料。
(4)さらに、Fe、Cr、Ni、Zr、Tiから選ばれた少なくとも1種を合計で0.05~1.0mass%含有し、残部がCuと不可避不純物からなる、(1)~(3)のいずれか1項に記載の電気電子部品用銅合金材料。
(5)添加元素としてCoおよびSiを含有し、残部がCuと不可避不純物からなる、(1)または(2)に記載の電気電子部品用銅合金材料。
(6)Coの含有量が0.4~2.0mass%、Siの含有量が0.1~0.5mass%である、(1)~(5)のいずれか1項に記載の電気電子部品用銅合金材料。
(7)鋳塊製造時における固相温度から500℃までの平均冷却速度が5~100℃/秒であることを特徴とする(1)~(6)のいずれか1項に記載の電気電子部品用銅合金材料。
ここで、「析出物(化合物)の平均粒子径(サイズ)」とは、後述する方法で求めた析出物の平均粒子径である。また、「結晶粒径」とは、後述するJIS-H0501(切断法)に基づいて測定した値である。
なお、銅合金材料の好ましい具体例として板材、条材について説明するが、銅合金材料の形状は板材や条材に限られるものではない。
ここで、R/tとは、日本伸銅協会技術標準「銅および銅合金薄板条の曲げ加工性評価方法(JBMA T307)」に準拠した曲げ角度90°のW曲げ試験を行った結果を意味し、圧延垂直方向に切り出した板材を所定の曲げ半径(R)で曲げ試験を行って、その頂点にクラック(割れ)が生じない限界のRを求め、その時の板厚(t)で規格化した値である。一般にR/tが小さいほど、曲げ加工性が良好であるとされる。
本発明の電気電子部品用銅合金材料では、導電率が50%IACS以上である。導電率は、より好ましくは55%IACS以上、さらに好ましくは60%IACS以上であり、高い程好ましいが、その上限は通常75%IACS程度である。また、本発明の電気電子部品用銅合金材料では、引張強度と曲げ加工性(R/t)が、前記の関係を有するものが好ましい。また、曲げ加工性(R/t)の下限は0である。
析出型銅合金の機能を発揮させる熱処理方法として、次の2回の熱処理を必ず行うことが一般的に行われている。1回目の熱処理は、溶体化(もしくは再結晶)処理または均質化処理と呼ばれ、比較的高温で、かつ、短時間の熱処理が行われる。2回目の熱処理は、時効熱処理または析出処理と呼ばれ、前記の溶体化処理温度より低温で、かつ、長時間の熱処理を行う。
一方、2回目の熱処理は強度に寄与する析出物(化合物)を銅合金中に均一かつ微細に分散させたいため、銅合金の薄板をコイル状に巻いた状態で温度制御を行った熱処理炉の中で比較的長時間(具体的には数分~数十時間)の熱処理を行い十分に固相拡散処理で最適な析出物(化合物)を分散させる。
次工程の時効熱処理で微細な析出物(化合物)を析出させることになるが、この温度では前熱処理で高温にさらされていた粗大な化合物のサイズと密度は変化しない。なお、溶体化熱処理と時効熱処理を続けて行う場合とこれらの間に冷間圧延工程を挟む場合とがあるが、いずれの場合のこれらの熱処理工程でも粗大な化合物のサイズと密度には変化は無い。
化合物Bの平均粒子径は、50nm以上500nm以下の場合に高温での粒界移動を抑制(ピンニング)する効果を発揮する。化合物Bは、50nm以上の平均粒子径を有するため非整合な化合物であり、母材の銅合金の粒界移動を抑制するためには、化合物Bの平均粒子径は50nm以上500nm以下が好ましい。なお、化合物Bの平均粒子径はより好ましくは100nm以上300nm以下である。溶体化処理後の組織観察で、化合物Bが分散している場合が最も粒成長を抑制していることが確認された。
よって、化合物Dの平均粒子径も、化合物Dが化合物Bや化合物Cと同じ効果を求めているために、50nm以上500nm以下が好ましい。なお、化合物Dの平均粒子径は、より好ましくは100nm以上300nm以下である。
前記化合物B、化合物C、化合物Dは、透過電子顕微鏡付属のEDS(エネルギー分散型検出器)にてその成分分析を行うことにより、どの化合物(析出物)であるかを判別して、それぞれについてそのサイズを測定することができる。
更に、本発明では材料の導電率を50%IACS以上としている。この特性は、好ましくは例えば、Coの含有量を0.4~2.0mass%、Siの含有量を0.1~0.5mass%とし、Co2Siの金属間化合物を析出させることなどによって得られる特性である。
化合物Bと化合物Cと化合物Dの数(特に、これらの合計数)が少なすぎると、結晶粒粗大化などにより得られる銅合金材料の曲げ性の劣化などが起こる場合がある。
本発明の銅合金材料においては、化合物Aがその析出数が多い程、つまり銅合金材料中での化合物Aの分散密度が高い程、強度が向上する。また、化合物Bと化合物Cと化合物Dの析出数(特に、これらの合計数)が多い程、つまり銅合金材料中での(化合物Bの分散密度+化合物Cの分散密度+化合物Dの分散密度)が高い程、強度向上に対して良好な曲げ性を有する銅合金材料が得られる。これらの化合物数(その分散密度)については、溶体化処理や時効処理での条件を適正に調整すれば、通常は、添加合金元素成分が多い程、得られる化合物も増えると考えられる。
Al、Ag、Sn、Zn、Mg、Mn、Inは銅母相に固溶して強化する特徴がある。その添加量が合計で0.05mass%以上であれば効果を奏し、1.0mass%以下であれば導電性を阻害することもない。好ましい添加量はこれらの元素の少なくとも1種を合計で0.2~0.4mass%である。
なお、Al、Ag、Sn、Zn、Mg、Mn、Inからなる群の各元素と、Fe、Cr、Ni、Zr、Tiからなる群の各元素とをそれぞれ複合添加しても、前述の範囲内であれば、個々の特性を阻害することはない。
本発明の電気電子部品用銅合金材料における不可避不純物としては、H、C、O、S等が挙げられる。
本発明の銅合金材料は、例えば、例えば次の工程により製造することができる。本発明の銅合金材料の主な製造工程の概略は、溶解→鋳造→均質化処理→熱間圧延→面削→冷間圧延→溶体化熱処理→時効熱処理→最終冷間圧延→低温焼鈍である。時効熱処理と最終冷間圧延は逆の順序でも良い。また、最終の低温焼鈍(歪取り焼鈍)は省略してもよい。各工程の条件としては、ここで特に述べた工程以外については常法により行うことができる。
本発明において、銅合金鋳塊の製造時における、固相温度から500℃までの平均冷却速度が5~100℃/秒であることも、化合物B、化合物C、化合物Dの適正なサイズ、量の析出に寄与する。この平均冷却速度が5℃/秒以上100℃/秒以下であれば化合物B、化合物C、化合物Dが適切に形成され、結果として母材の銅合金の結晶粒径を適切な範囲とすることができる。ここで固相温度とは凝固が開始される温度であり、500℃より低温では化合物Aが析出する温度帯となるため、温度範囲の下限を500℃とした。
なお、前記鋳造後の冷却速度が遅すぎると、粗大析出物の増加により強度が低下する場合がある。
前記時効熱処理後の冷却速度は、熱処理炉で温度管理することで調整できる。なお、急速に冷却したい場合は、熱処理炉の加熱帯から試料を取りだし、強制空冷や水焼入で対応することができる。
表1、表2に示した成分を含有し、残部がCuと不可避不純物から成る合金(本発明例No.1~35、比較例No.101~128)を高周波溶解炉により溶解し、これを5~100℃/秒の冷却速度で鋳造して厚さ30mm、幅100mm、長さ150mmの鋳塊を得た。このとき、鋳型の鋳壁近傍に熱電対をセットし、随時、測定しながら鋳造、溶製を行い鋳塊を作成した。
得られた鋳塊を930~1050℃の温度で0.5~1.0時間の保持後、熱間圧延を行い板厚t=12mmの熱延板を作製し、その両面を各1mm面削して板厚t=10mmとし、次いで冷間圧延により板厚t=0.3mmに仕上げ、700~950℃の温度で溶体化熱処理を行った。この準備した材料を次の2工程のいずれかの処理を施して最終製品の供試材を作成した。
工程A:(前記溶体化熱処理)-時効熱処理(500~600℃の温度で2~4時間)-冷間加工(加工率5~25%)
※この後、必要に応じて、300~400℃の温度で1~2時間のひずみ取り焼鈍を実施した。
工程B:(前記溶体化熱処理)-冷間圧延(加工率5~25%)-時効熱処理(450~550℃の温度で2~4時間)
a.引張強度:
供試材(試験片)の圧延平行方向から切り出したJIS Z2201-13B号の試験片をJIS Z2241に準じて3本測定しその平均値を示した。
b.導電率測定:
四端子法を用いて、20℃(±1℃)に管理された恒温槽中で、各試験片の2本について導電率を測定し、その平均値(%IACS)を表1~2に示した。このとき端子間距離は100mmとした。
c.曲げ加工性:
供試材から圧延方向に垂直に幅10mm、長さ35mmに試験片を切出し、これに曲げの軸が圧延方向に平行に曲げ半径R=0~0.5(mm)の間で0.1mm刻みの6水準で90°のW曲げ(Bad-way曲げ)し、曲げ部における割れの有無を観察し割れの有無を調査した。曲げ部における割れの有無の観察は、50倍の光学顕微鏡での目視観察と、走査型電子顕微鏡(SEM)での曲げ加工部位の観察により行った。表1中のR/tのRは曲げ半径でtは板厚を示し、この値が小さいほど良好な曲げ加工性を示す。
d.結晶粒径:
供試材(試験片)の圧延方向に垂直な断面を湿式研磨、バフ研磨により鏡面に仕上げた後、クロム酸:水=1:1の液で数秒研磨面を腐食した後、光学顕微鏡で200~400倍の倍率か、走査型電子顕微鏡(SEM)の二次電子像を用いて500~2000倍の倍率で写真をとり、前記断面の結晶粒径をJIS H0501の切断法に準じて測定した。なお、写真の倍率については、観測される結晶粒の大きさにより変化させた。なお、表中の「混粒」とは、再結晶領域と未再結晶領域(圧延加工組織が残留した状態)の両方が混在した組織で、混粒の場合には粒径は測定しなかった。未再結晶が存在すると曲げ加工性が劣化すると言われている。そのため、混粒は望ましくない組織である。
e.時効熱処理後の冷却速度
冷却速度は熱処理を行う材料の重さを変えることで調整したか、または、用いた熱処理炉で温度管理することで調整した。例えば、同じ熱処理炉(バッチ式)を用いたことで、より早い冷却速度を得るためには、同時に熱処理を行う量を少なくし、一方、より遅い冷却速度を得るためには、ダミーとする試験片を入れて同時に熱処理を行う量を多くして、それぞれ熱処理した。なお、急速に冷却したい場合は、熱処理炉の加熱帯から試料を取りだし、強制空冷や水焼入で対応した。なお、冷却速度の調整は、熱処理炉で温度管理をすることによっても行なった。サンプルの数量が特に少ない場合や冷却速度が非常に遅い場合などは熱処理炉で温度管理することで冷却速度を調整した。
f.化合物のサイズ、数と分散密度
析出物(化合物)のサイズ(平均粒子径)は透過電子顕微鏡を用いて測定した。最終製品では加工歪みの影響を受けて観察しにくくなるため時効熱処理後の材料の組織観察を実施した。熱処理材の任意の場所からTEM用試験片を切り出し、硝酸(20%)のメタノール溶液で、温度-20~-25℃で電解研磨(ツインジェット式電解研磨装置による)を行って観察用の試験片を完成させた。
その後、加速電圧:300kVで観察を行って、電子線の入射方位を(001)近傍に合わせて、倍率100000倍の写真を任意に3枚撮影した。その写真を用いて化合物A(約100個)の規定のサイズにあたる個数を求めた。
また、化合物B、化合物C、化合物Dは透過電子顕微鏡付属のEDS(エネルギー分散型検出器)にてその成分分析を行った後、1000~5000倍の倍率で任意に3枚の写真を撮影して、その写真を用いて所望の規定のサイズにあたる個数を求めた。なお、その個数は10~100個である。
これらの値から、各化合物A、B、C及びDの分散密度(個/mm2)を求めた。以下の表中では、分散密度を単に密度と略記する。また、「化合物B、C、D密度(個/mm2)」とは、各化合物、B、C及びDの分散密度(個/mm2)の合計を示すが、もしある化合物が存在しなければ、残りの化合物単独の分散密度又は残り2種の化合物の分散密度の合計であることは言うまでもない。さらにまた、「(B+C+D)/A」とは、「{(化合物Bの分散密度+化合物Cの分散密度+化合物Dの分散密度)/化合物Aの分散密度}」を略記したものである。
本願は、2008年8月5日に日本国で特許出願された特願2008-202467に基づく優先権を主張するものであり、これはここに参照してその内容を本明細書の記載の一部として取り込む。
Claims (7)
- 添加元素としてCoおよびSiを含有する電気電子部品用銅合金材料であって、
CoとSiからなる平均粒子径が5nm以上50nm未満の化合物Aが分散し、
さらに、CoとSiの一方もしくは両方を含有しない平均粒子径が50nm以上500nm以下の化合物Bと、CoとSiの両方およびさらに他の元素を含有する平均粒子径が50nm以上500nm以下の化合物Cと、CoとSiからなる平均粒子径が50nm以上500nm以下の化合物Dとからなる群から選ばれる少なくとも1種の化合物が分散し、
母材の銅合金の結晶粒径が3~35μmであり、かつ導電率が50%IACS以上であることを特徴とする電気電子部品用銅合金材料。 - 添加元素としてCoおよびSiを含有する電気電子部品用銅合金材料であって、
CoとSiからなる平均粒子径が5nm以上50nm未満の化合物Aと、CoとSiの一方もしくは両方を含有しない平均粒子径が50nm以上500nm以下の化合物Bと、CoとSiの両方およびさらに他の元素を含有する平均粒子径が50nm以上500nm以下の化合物Cと、CoとSiからなる平均粒子径が50nm以上500nm以下の化合物Dが分散し、
前記化合物A~Dの分散密度の比が0.0001≦{(化合物Bの分散密度+化合物Cの分散密度+化合物Dの分散密度)/化合物Aの分散密度}≦0.1であり、
母材の銅合金の結晶粒径が3~35μmであり、かつ導電率が50%IACS以上であることを特徴とする電気電子部品用銅合金材料。 - さらに、Al、Ag、Sn、Zn、Mg、Mn、Inから選ばれた少なくとも1種を合計で0.05~1.0mass%含有し、残部がCuと不可避不純物からなる、請求項1または請求項2に記載の電気電子部品用銅合金材料。
- さらに、Fe、Cr、Ni、Zr、Tiから選ばれた少なくとも1種を合計で0.05~1.0mass%含有し、残部がCuと不可避不純物からなる、請求項1~請求項3のいずれか1項に記載の電気電子部品用銅合金材料。
- 添加元素としてCoおよびSiを含有し、残部がCuと不可避不純物からなる、請求項1または請求項2に記載の電気電子部品用銅合金材料。
- Coの含有量が0.4~2.0mass%、Siの含有量が0.1~0.5mass%である、請求項1~請求項5のいずれか1項に記載の電気電子部品用銅合金材料。
- 鋳塊製造時における固相温度から500℃までの平均冷却速度が5~100℃/秒であることを特徴とする請求項1~請求項6のいずれか1項に記載の電気電子部品用銅合金材料。
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| JP2010507744A JP4913902B2 (ja) | 2008-08-05 | 2009-07-30 | 電気・電子部品用銅合金材料の製造方法 |
| EP09804913A EP2333128A4 (en) | 2008-08-05 | 2009-07-30 | COPPER ALLOY MATERIAL FOR ELECTRICAL AND ELECTRONIC COMPONENTS |
| CN2009801304529A CN102112640B (zh) | 2008-08-05 | 2009-07-30 | 电气/电子部件用铜合金材料的制造方法 |
| US13/021,371 US20110200479A1 (en) | 2008-08-05 | 2011-02-04 | Copper alloy material for electric/electronic parts |
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| US13/021,371 Continuation US20110200479A1 (en) | 2008-08-05 | 2011-02-04 | Copper alloy material for electric/electronic parts |
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| US (1) | US20110200479A1 (ja) |
| EP (1) | EP2333128A4 (ja) |
| JP (1) | JP4913902B2 (ja) |
| KR (1) | KR101570556B1 (ja) |
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| WO (1) | WO2010016429A1 (ja) |
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| JP2012097305A (ja) * | 2010-10-29 | 2012-05-24 | Jx Nippon Mining & Metals Corp | 電子部品用チタン銅 |
| CN102575320A (zh) * | 2010-05-31 | 2012-07-11 | Jx日矿日石金属株式会社 | 电子材料用Cu-Co-Si系铜合金及其制造方法 |
| WO2012096351A1 (ja) | 2011-01-13 | 2012-07-19 | Jx日鉱日石金属株式会社 | Cu-Co-Si-Zr合金材及びその製造方法 |
| JP2012167319A (ja) * | 2011-02-14 | 2012-09-06 | Jx Nippon Mining & Metals Corp | Cu−Co−Si系合金、伸銅品、電子部品、コネクタ及びCu−Co−Si系合金の製造方法 |
| JP2012188680A (ja) * | 2011-03-08 | 2012-10-04 | Jx Nippon Mining & Metals Corp | 電子部品用チタン銅 |
| JP2012207264A (ja) * | 2011-03-29 | 2012-10-25 | Jx Nippon Mining & Metals Corp | 曲げ加工性に優れたCu−Co−Si系合金 |
| JP2012224898A (ja) * | 2011-04-18 | 2012-11-15 | Jx Nippon Mining & Metals Corp | 電子材料用Cu−Ni−Si系合金、Cu−Co−Si系合金及びその製造方法 |
| US20130209825A1 (en) * | 2010-08-24 | 2013-08-15 | Jx Nippon Mining & Metals Corporation | Copper-cobalt-silicon alloy for electrode material |
| TWI418642B (zh) * | 2010-06-03 | 2013-12-11 | Jx Nippon Mining & Metals Corp | Cu-Co-Si copper alloy rolling plate and electrical parts using the same |
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| CN108414559B (zh) * | 2018-04-16 | 2020-12-29 | 中国航发北京航空材料研究院 | 一种测试多元合金中不同相组成微区成分的定量分析方法 |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6187838A (ja) | 1984-10-03 | 1986-05-06 | Kobe Steel Ltd | 熱間加工性の優れた銅合金 |
| JPS63307232A (ja) | 1987-06-04 | 1988-12-14 | Sumitomo Metal Mining Co Ltd | 銅合金 |
| JPH02129326A (ja) | 1988-11-08 | 1990-05-17 | Sumitomo Metal Mining Co Ltd | 高力銅合金 |
| JPH02277735A (ja) | 1989-04-20 | 1990-11-14 | Sumitomo Metal Mining Co Ltd | リードフレーム用銅合金 |
| JP2006161148A (ja) | 2004-02-27 | 2006-06-22 | Furukawa Electric Co Ltd:The | 銅合金 |
| JP2006265731A (ja) | 2005-02-28 | 2006-10-05 | Furukawa Electric Co Ltd:The | 銅合金 |
| JP2006274445A (ja) * | 2005-03-02 | 2006-10-12 | Furukawa Electric Co Ltd:The | 銅合金とその製造方法 |
| JP2007314847A (ja) | 2006-05-26 | 2007-12-06 | Kobe Steel Ltd | 高強度、高導電率および曲げ加工性に優れた銅合金およびその製造方法 |
| JP2008056977A (ja) | 2006-08-30 | 2008-03-13 | Mitsubishi Electric Corp | 銅合金及びその製造方法 |
| JP2008075152A (ja) | 2006-09-22 | 2008-04-03 | Kobe Steel Ltd | 高強度、高導電率および曲げ加工性に優れた銅合金 |
| JP2008075151A (ja) | 2006-09-22 | 2008-04-03 | Kobe Steel Ltd | 高強度、高導電率および曲げ加工性に優れた銅合金 |
| JP2008088512A (ja) | 2006-10-03 | 2008-04-17 | Nikko Kinzoku Kk | 電子材料用銅合金の製造方法 |
| JP2008202467A (ja) | 2007-02-19 | 2008-09-04 | Ihi Corp | 過給機 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3408021B2 (ja) * | 1995-06-30 | 2003-05-19 | 古河電気工業株式会社 | 電子電気部品用銅合金およびその製造方法 |
| JP3754011B2 (ja) * | 2002-09-04 | 2006-03-08 | デプト株式会社 | 電子部品用金属材料、電子部品、電子機器、金属材料の加工方法、電子部品の製造方法及び電子光学部品 |
| CN101146920A (zh) * | 2005-03-24 | 2008-03-19 | 日矿金属株式会社 | 电子材料用铜合金 |
| JP4068626B2 (ja) * | 2005-03-31 | 2008-03-26 | 日鉱金属株式会社 | 電子材料用Cu−Ni−Si−Co−Cr系銅合金及びその製造方法 |
| JP4655834B2 (ja) * | 2005-09-02 | 2011-03-23 | 日立電線株式会社 | 電気部品用銅合金材とその製造方法 |
-
2009
- 2009-07-30 EP EP09804913A patent/EP2333128A4/en not_active Withdrawn
- 2009-07-30 WO PCT/JP2009/063615 patent/WO2010016429A1/ja not_active Ceased
- 2009-07-30 JP JP2010507744A patent/JP4913902B2/ja active Active
- 2009-07-30 CN CN2009801304529A patent/CN102112640B/zh not_active Expired - Fee Related
- 2009-07-30 KR KR1020117004937A patent/KR101570556B1/ko not_active Expired - Fee Related
-
2011
- 2011-02-04 US US13/021,371 patent/US20110200479A1/en not_active Abandoned
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6187838A (ja) | 1984-10-03 | 1986-05-06 | Kobe Steel Ltd | 熱間加工性の優れた銅合金 |
| JPS63307232A (ja) | 1987-06-04 | 1988-12-14 | Sumitomo Metal Mining Co Ltd | 銅合金 |
| JPH02129326A (ja) | 1988-11-08 | 1990-05-17 | Sumitomo Metal Mining Co Ltd | 高力銅合金 |
| JPH02277735A (ja) | 1989-04-20 | 1990-11-14 | Sumitomo Metal Mining Co Ltd | リードフレーム用銅合金 |
| JP2006161148A (ja) | 2004-02-27 | 2006-06-22 | Furukawa Electric Co Ltd:The | 銅合金 |
| JP2006265731A (ja) | 2005-02-28 | 2006-10-05 | Furukawa Electric Co Ltd:The | 銅合金 |
| JP2006274445A (ja) * | 2005-03-02 | 2006-10-12 | Furukawa Electric Co Ltd:The | 銅合金とその製造方法 |
| JP2007314847A (ja) | 2006-05-26 | 2007-12-06 | Kobe Steel Ltd | 高強度、高導電率および曲げ加工性に優れた銅合金およびその製造方法 |
| JP2008056977A (ja) | 2006-08-30 | 2008-03-13 | Mitsubishi Electric Corp | 銅合金及びその製造方法 |
| JP2008075152A (ja) | 2006-09-22 | 2008-04-03 | Kobe Steel Ltd | 高強度、高導電率および曲げ加工性に優れた銅合金 |
| JP2008075151A (ja) | 2006-09-22 | 2008-04-03 | Kobe Steel Ltd | 高強度、高導電率および曲げ加工性に優れた銅合金 |
| JP2008088512A (ja) | 2006-10-03 | 2008-04-17 | Nikko Kinzoku Kk | 電子材料用銅合金の製造方法 |
| JP2008202467A (ja) | 2007-02-19 | 2008-09-04 | Ihi Corp | 過給機 |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP2333128A4 * |
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| JP2011208232A (ja) * | 2010-03-30 | 2011-10-20 | Jx Nippon Mining & Metals Corp | Cu−Co−Si合金材 |
| WO2011122490A1 (ja) * | 2010-03-30 | 2011-10-06 | Jx日鉱日石金属株式会社 | Cu-Co-Si合金材 |
| US9076569B2 (en) | 2010-03-30 | 2015-07-07 | Jx Nippon Mining & Metals Corporation | Cu—Co—Si alloy material and manufacturing method thereof |
| EP2554692A4 (en) * | 2010-03-30 | 2014-04-09 | Jx Nippon Mining & Metals Corp | CU-CO-SI ALLOY MATERIAL |
| CN102575320A (zh) * | 2010-05-31 | 2012-07-11 | Jx日矿日石金属株式会社 | 电子材料用Cu-Co-Si系铜合金及其制造方法 |
| CN102575320B (zh) * | 2010-05-31 | 2014-01-08 | Jx日矿日石金属株式会社 | 电子材料用Cu-Co-Si系铜合金及其制造方法 |
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| KR101917416B1 (ko) | 2010-08-24 | 2018-11-09 | 제이엑스금속주식회사 | 전자 재료용 Cu-Co-Si 계 합금 |
| US10056166B2 (en) * | 2010-08-24 | 2018-08-21 | Jx Nippon Mining & Metals Corporation | Copper-cobalt-silicon alloy for electrode material |
| US20130209825A1 (en) * | 2010-08-24 | 2013-08-15 | Jx Nippon Mining & Metals Corporation | Copper-cobalt-silicon alloy for electrode material |
| JP2012097305A (ja) * | 2010-10-29 | 2012-05-24 | Jx Nippon Mining & Metals Corp | 電子部品用チタン銅 |
| WO2012096351A1 (ja) | 2011-01-13 | 2012-07-19 | Jx日鉱日石金属株式会社 | Cu-Co-Si-Zr合金材及びその製造方法 |
| US20130284323A1 (en) * | 2011-01-13 | 2013-10-31 | Jx Nippon Mining & Metals Corporation | Cu-Co-Si-Zr ALLOY MATERIAL AND MANUFACTURING METHOD THEREOF |
| EP2664685A4 (en) * | 2011-01-13 | 2014-04-09 | Jx Nippon Mining & Metals Corp | CU-CO-SI-ZR ALLOY MATERIAL AND MANUFACTURING METHOD THEREFOR |
| JP2012167319A (ja) * | 2011-02-14 | 2012-09-06 | Jx Nippon Mining & Metals Corp | Cu−Co−Si系合金、伸銅品、電子部品、コネクタ及びCu−Co−Si系合金の製造方法 |
| JP2012188680A (ja) * | 2011-03-08 | 2012-10-04 | Jx Nippon Mining & Metals Corp | 電子部品用チタン銅 |
| JP2012207264A (ja) * | 2011-03-29 | 2012-10-25 | Jx Nippon Mining & Metals Corp | 曲げ加工性に優れたCu−Co−Si系合金 |
| JP2012224898A (ja) * | 2011-04-18 | 2012-11-15 | Jx Nippon Mining & Metals Corp | 電子材料用Cu−Ni−Si系合金、Cu−Co−Si系合金及びその製造方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102112640B (zh) | 2013-03-27 |
| JP4913902B2 (ja) | 2012-04-11 |
| EP2333128A4 (en) | 2012-07-04 |
| KR101570556B1 (ko) | 2015-11-19 |
| US20110200479A1 (en) | 2011-08-18 |
| KR20110039371A (ko) | 2011-04-15 |
| CN102112640A (zh) | 2011-06-29 |
| EP2333128A1 (en) | 2011-06-15 |
| JPWO2010016429A1 (ja) | 2012-01-19 |
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