EP1970459A1 - Light metal composite containing carbon nanotubes and its use - Google Patents
Light metal composite containing carbon nanotubes and its use Download PDFInfo
- Publication number
- EP1970459A1 EP1970459A1 EP08002907A EP08002907A EP1970459A1 EP 1970459 A1 EP1970459 A1 EP 1970459A1 EP 08002907 A EP08002907 A EP 08002907A EP 08002907 A EP08002907 A EP 08002907A EP 1970459 A1 EP1970459 A1 EP 1970459A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- light metal
- carbon nanotubes
- metal material
- thermal conductivity
- material according
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 13
- 239000002041 carbon nanotube Substances 0.000 title claims abstract description 13
- 229910021393 carbon nanotube Inorganic materials 0.000 title claims abstract description 13
- 239000002905 metal composite material Substances 0.000 title 1
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 21
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000000463 material Substances 0.000 claims description 22
- 239000007769 metal material Substances 0.000 claims description 17
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 239000011265 semifinished product Substances 0.000 claims description 4
- 238000005266 casting Methods 0.000 claims description 3
- 239000002071 nanotube Substances 0.000 abstract description 8
- 229910052751 metal Inorganic materials 0.000 abstract description 7
- 239000002184 metal Substances 0.000 abstract description 7
- 229910045601 alloy Inorganic materials 0.000 abstract description 6
- 239000000956 alloy Substances 0.000 abstract description 6
- 239000004411 aluminium Substances 0.000 abstract 3
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- 238000005275 alloying Methods 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 238000004881 precipitation hardening Methods 0.000 description 2
- 229910019018 Mg 2 Si Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D21/00—Casting non-ferrous metals or metallic compounds so far as their metallurgical properties are of importance for the casting procedure; Selection of compositions therefor
- B22D21/002—Castings of light metals
- B22D21/007—Castings of light metals with low melting point, e.g. Al 659 degrees C, Mg 650 degrees C
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C26/00—Alloys containing diamond or cubic or wurtzitic boron nitride, fullerenes or carbon nanotubes
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C49/00—Alloys containing metallic or non-metallic fibres or filaments
- C22C49/02—Alloys containing metallic or non-metallic fibres or filaments characterised by the matrix material
- C22C49/04—Light metals
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C26/00—Alloys containing diamond or cubic or wurtzitic boron nitride, fullerenes or carbon nanotubes
- C22C2026/002—Carbon nanotubes
Definitions
- the invention relates to a light metal material, in particular an aluminum material.
- Temperaturbeetzschlagte cast aluminum semi-finished and semi-finished products should have on the one hand a high thermal conductivity and on the other hand a high strength and high temperature resistance.
- the thermal conductivity of pure aluminum with about 230 W / mK is relatively high.
- solid solution hardening on the one hand and precipitation hardening by hardening phases such as Al 2 Cu, Mg 2 Si or ZnMg 2 is necessary for the required strength on the one hand. Due to the content of the alloy components used, however, the thermal conductivity of aluminum decreases.
- the object of the invention is to provide a light metal material, in particular an aluminum material, which has high strength and high heat resistance at high thermal conductivity.
- the light metal material consists of a light metal base material containing carbon nanotubes (carbon nanotubes).
- the specific thermal conductivity of the light metal material according to the invention is at least 10%, in particular at least 20% above the specific Thermal conductivity of the base material, measured at room temperature (300 ° K).
- carbon nanotubes according to the invention is also possible with other light metal base materials, such as magnesium or titanium materials, however, pure aluminum or low alloyed aluminum is preferably used as the light metal base material, ie aluminum with a purity of at least 99% by weight or aluminum a content of alloy components of at most 5 wt.%, Wherein the alloying components are formed in particular by silicon and magnesium.
- the invention is also applicable to higher alloyed aluminum, in particular, the conventional aluminum casting materials with a content of alloy components of up to 25 wt.%. be used as base materials, for example AlSi7Mg, AlMg9, AlSi9Cu3 or AlSi17Cu4Mg.
- the lightweight metal material according to the invention is particularly suitable as a casting material and for the production of semifinished products, especially when alloys of the semifinished alloying groups UNS (Unified Numbering System) A95XXX to A97XXX are used as base materials.
- UNS Unified Numbering System
- the aluminum material according to the invention has an extremely high thermal conductivity.
- the thermal conductivity of the material is far above the thermal conductivity to be expected according to the mixing rule due to the thermal conductivity of the pure aluminum and the nanotubes. That is, a significant over-additive effect has been noted. He is therefore for components that require a concentrated heat dissipation, such as cylinder heads and other components of Combustion engines are ideally suited. Likewise, it can be made of tools and machine parts, z. B. molds.
- the light metal material according to the invention is outstandingly suitable for the production of semi-finished products.
- the material of the invention has a good castability.
- the proportion of carbon nanotubes is 0.1 to 20.0, in particular 0.5 to 5 vol.%, Based on the Leichmetallmaschinestoff. In this case, a spatially networked distribution of the nanotubes in the material is desired.
- nanotubes can be used, preferably with a diameter of 1 to 50, in particular 10 to 40 nanometers.
- the carbon nanotubes may be single or multi-walled, preferably tubes with open ends are used which can be filled with the light metal material.
- the length of the nanotubes is preferably 0.1 to 20 mm.
- the light metal material according to the invention for example by powder metallurgy or by infiltration of the nanotubes with the molten light metal, a master alloy with a content of nanotubes from 2 to 50, in particular 10 to 40 vol.% Are prepared, then the molten base metal material, so for example pure aluminum or low alloyed aluminum is added.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
Abstract
Description
Die Erfindung bezieht sich auf einen Leichtmetallwerkstoff, insbesondere einen Aluminiumwerkstoff.The invention relates to a light metal material, in particular an aluminum material.
Temperaturbeaufschlagte Aluminium-Gussbauteile- und -halbzeuge sollen einerseits über eine hohe Wärmeleitfähigkeit und andererseits eine hohe Festigkeit und Warmfestigkeit verfügen.Temperaturbeaufschlagte cast aluminum semi-finished and semi-finished products should have on the one hand a high thermal conductivity and on the other hand a high strength and high temperature resistance.
Die Wärmeleitfähigkeit von Reinaluminium mit etwa 230 W/mK ist zwar relativ hoch. Jedoch ist für die erforderliche Festigkeit einerseits eine Mischkristallhärtung und andererseits eine Ausscheidungshärtung durch aushärtende Phasen, wie Al2Cu, Mg2Si oder ZnMg2 notwendig. Durch den Gehalt der verwendeten Legierungskomponenten nimmt jedoch die Wärmeleitfähigkeit von Aluminium ab.The thermal conductivity of pure aluminum with about 230 W / mK is relatively high. However, solid solution hardening on the one hand and precipitation hardening by hardening phases such as Al 2 Cu, Mg 2 Si or ZnMg 2 is necessary for the required strength on the one hand. Due to the content of the alloy components used, however, the thermal conductivity of aluminum decreases.
Aufgabe der Erfindung ist es, einen Leichtmetallwerkstoff, insbesondere einen Aluminiumwerkstoff bereit zu stellen, der bei hoher Wärmeleitfähigkeit eine hohe Festigkeit und Warmfestigkeit aufweist.The object of the invention is to provide a light metal material, in particular an aluminum material, which has high strength and high heat resistance at high thermal conductivity.
Dies wird erfindungsgemäß dadurch erreicht, dass der Leichtmetallwerkstoff aus einem Leichtmetall-Basiswerkstoff besteht, der Kohlenstoffnanoröhren (carbon nanotubes) enthält. Dabei liegt die spezifische Wärmeleitfähigkeit des erfindungsgemäßen Leichtmetallwerkstoffs um mindestens 10 %, insbesondere mindestens 20 % über der spezifischen Wärmeleitfähigkeit des Basiswerkstoffs, gemessen beim Raumtemperatur (300°K).This is inventively achieved in that the light metal material consists of a light metal base material containing carbon nanotubes (carbon nanotubes). The specific thermal conductivity of the light metal material according to the invention is at least 10%, in particular at least 20% above the specific Thermal conductivity of the base material, measured at room temperature (300 ° K).
Der Zusatz von Kohlenstoffnanoröhren ist erfindungsgemäß zwar auch bei anderen Leichtmetall-Basiswerkstoffen, wie Magnesium- oder Titanwerkstoffen möglich, vorzugsweise wird jedoch Reinaluminium oder niedrig legiertes Aluminium als Leichtmetall-Basiswerkstoff verwendet, also Aluminium mit einer Reinheit von mindestens 99 Gew.% bzw. Aluminium mit einem Gehalt an Legierungskomponenten von maximal 5 Gew.%, wobei die Legierungskomponenten insbesondere durch Silizium und Magnesium gebildet werden. Darüberhinaus ist die Erfindung auch bei höher legiertem Aluminium anwendbar, insbesondere können die herkömmlichen Aluminium-Gusswerkstoffe mit einem Gehalt an Legierungskomponenten von bis zu 25 Gew.%. als Basiswerkstoffe eingesetzt werden, beispielsweise AlSi7Mg, AlMg9, AlSi9Cu3 oder AlSi17Cu4Mg.Although the addition of carbon nanotubes according to the invention is also possible with other light metal base materials, such as magnesium or titanium materials, however, pure aluminum or low alloyed aluminum is preferably used as the light metal base material, ie aluminum with a purity of at least 99% by weight or aluminum a content of alloy components of at most 5 wt.%, Wherein the alloying components are formed in particular by silicon and magnesium. Moreover, the invention is also applicable to higher alloyed aluminum, in particular, the conventional aluminum casting materials with a content of alloy components of up to 25 wt.%. be used as base materials, for example AlSi7Mg, AlMg9, AlSi9Cu3 or AlSi17Cu4Mg.
Der erfindungsgemäße Leichtmetallwerkstoff ist insbesondere als Gusswerkstoff sowie zur Herstellung von Halbzeug geeignet, vor allem wenn als Basiswerkstoffe Legierungen der Halbzeuglegierungsgruppen UNS(Unified Numbering System) A95XXX bis A97XXX eingesetzt werden.The lightweight metal material according to the invention is particularly suitable as a casting material and for the production of semifinished products, especially when alloys of the semifinished alloying groups UNS (Unified Numbering System) A95XXX to A97XXX are used as base materials.
Da Reinaluminium eine hohe Wärmeleitfähigkeit von ca. 230 W/mK aufweist und die Wärmeleitfähigkeit der Nanoröhren etwa 6000 W/mK beträgt, weist der erfindungsgemäße Aluminiumwerkstoff eine außerordentlich hohe Wärmeleitfähigkeit auf. Die Wärmeleitfähigkeit des Werkstoffs liegt dabei weit über der nach der Mischungsregel aufgrund der Wärmeleitfähigkeit des Reinaluminiums und der Nanoröhren zu erwartenden Wärmeleitfähigkeit. Das heißt, es ist ein erheblicher überadditiver Effekt festgestellt worden. Er ist daher für Bauteile, die eine konzentrierte Wärmeabfuhr erfordern, beispielsweise Zylinderköpfe und andere Bauteile von Verbrennungsmotoren hervorragend geeignet. Ebenso können daraus Werkzeuge und Maschinenteile gefertigt werden, z. B. Kokillen. Desgleichen ist der erfindungsgemäße Leichtmetallwerkstoff hervorragend zur Herstellung von Halbzeug geeignet.Since pure aluminum has a high thermal conductivity of about 230 W / mK and the thermal conductivity of the nanotubes is about 6000 W / mK, the aluminum material according to the invention has an extremely high thermal conductivity. The thermal conductivity of the material is far above the thermal conductivity to be expected according to the mixing rule due to the thermal conductivity of the pure aluminum and the nanotubes. That is, a significant over-additive effect has been noted. He is therefore for components that require a concentrated heat dissipation, such as cylinder heads and other components of Combustion engines are ideally suited. Likewise, it can be made of tools and machine parts, z. B. molds. Likewise, the light metal material according to the invention is outstandingly suitable for the production of semi-finished products.
Da eine Dispersionshärtung, d. h. ein Versetzungsaufstau an den eingebrachten Nanopartikeln erfolgt, wird zudem eine erhebliche Festigkeitssteigerung erreicht, die außerdem keiner Alterung unterliegt. Auch weist der erfindungsgemäße Werkstoff eine gute Gießbarkeit auf.Since dispersion hardening, i. H. a Versetzungsaufstau on the introduced nanoparticles takes place, also a considerable increase in strength is achieved, which is also subject to any aging. Also, the material of the invention has a good castability.
Der Anteil der Kohlenstoffnanoröhren beträgt 0,1 bis 20,0, insbesondere 0,5 bis 5 Vol.%, bezogen auf den Leichmetallwerkstoff. Dabei wird eine räumlich vernetzte Verteilung der Nanoröhren in dem Werkstoff angestrebt.The proportion of carbon nanotubes is 0.1 to 20.0, in particular 0.5 to 5 vol.%, Based on the Leichmetallwerkstoff. In this case, a spatially networked distribution of the nanotubes in the material is desired.
Es können handelsübliche Nanoröhren zum Einsatz kommen, vorzugsweise mit einem Durchmesser von 1 bis 50, insbesondere 10 bis 40 Nanometer. Die Kohlenstoffnanoröhren können ein- oder mehrwandig ausgebildet sein, vorzugsweise werden Röhren mit geöffneten Enden verwendet, die mit dem Leichtmetallwerkstoff gefüllt werden können. Die Länge der Nanoröhren beträgt vorzugsweise 0,1 bis 20 mm.Commercially available nanotubes can be used, preferably with a diameter of 1 to 50, in particular 10 to 40 nanometers. The carbon nanotubes may be single or multi-walled, preferably tubes with open ends are used which can be filled with the light metal material. The length of the nanotubes is preferably 0.1 to 20 mm.
Zur Herstellung des erfindungsgemäßen Leichtmetallwerkstoffs kann beispielsweise auf pulvermetallurgischem Weg oder durch Infiltration der Nanoröhren mit dem geschmolzenen Leichtmetall eine Vorlegierung mit einem Gehalt an Nanoröhren von 2 bis 50, insbesondere 10 bis 40 Vol.% hergestellt werden, die dann dem geschmolzenen Basisleichtmetallwerkstoff, also beispielsweise Reinaluminium oder niedrig legiertem Aluminium zugegeben wird.For the production of the light metal material according to the invention, for example by powder metallurgy or by infiltration of the nanotubes with the molten light metal, a master alloy with a content of nanotubes from 2 to 50, in particular 10 to 40 vol.% Are prepared, then the molten base metal material, so for example pure aluminum or low alloyed aluminum is added.
Claims (8)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE200710012426 DE102007012426A1 (en) | 2007-03-15 | 2007-03-15 | Light metal material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1970459A1 true EP1970459A1 (en) | 2008-09-17 |
Family
ID=39431248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP08002907A Withdrawn EP1970459A1 (en) | 2007-03-15 | 2008-02-16 | Light metal composite containing carbon nanotubes and its use |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP1970459A1 (en) |
| DE (1) | DE102007012426A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010133189A1 (en) * | 2009-05-19 | 2010-11-25 | Arno Cloos | Materials comprising carbon nanoparticles and the use thereof |
| FR2947008A1 (en) * | 2009-06-19 | 2010-12-24 | Peugeot Citroen Automobiles Sa | Cylinder head for internal combustion engine i.e. diesel engine, has solid portion provided with intake orifice, and exhaust orifice and water circulation zone i.e. water core, arranged in solid portion |
| EP2186918A4 (en) * | 2007-07-05 | 2011-12-14 | Sumitomo Precision Prod Co | HIGHLY HEAT CONDUCTIVE COMPOSITE MATERIAL |
| WO2018126191A1 (en) * | 2016-12-30 | 2018-07-05 | American Boronite Corporation | Metal matrix composite comprising nanotubes and method of producing same |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040067153A1 (en) * | 2002-08-22 | 2004-04-08 | Atsushi Koide | Method for producing composite metal product |
| JP2006132416A (en) * | 2004-11-05 | 2006-05-25 | Nissan Motor Co Ltd | Internal combustion engine and method of manufacturing combustion chamber component |
| EP1696046A1 (en) * | 2003-12-18 | 2006-08-30 | Shimane Prefectual Government | Metal base carbon fiber composite material and process for producing the same |
| JP2007016262A (en) * | 2005-07-06 | 2007-01-25 | Nissan Motor Co Ltd | Carbon nanotube-containing composite material, and method for producing the same |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS63312923A (en) * | 1987-06-17 | 1988-12-21 | Agency Of Ind Science & Technol | Wire preform material for carbon fiber reinforced aluminum composite material |
| US6245439B1 (en) * | 1994-08-09 | 2001-06-12 | Kabushiki Kaisha Toyoyta Chuo Kenkyusho | composite material and method for the manufacture |
| US20040069454A1 (en) * | 1998-11-02 | 2004-04-15 | Bonsignore Patrick V. | Composition for enhancing thermal conductivity of a heat transfer medium and method of use thereof |
| DE10122750B4 (en) * | 2001-05-10 | 2008-04-10 | Diehl Stiftung & Co.Kg | Process for the preparation of carbon allotropes and their intercalates or endohedral compounds |
| CN1851021A (en) * | 2005-04-22 | 2006-10-25 | 鸿富锦精密工业（深圳）有限公司 | Magnesium-aluminium alloy material |
| DE102005041378A1 (en) * | 2005-09-01 | 2007-03-08 | Forschungszentrum Karlsruhe Gmbh | Modified carbon nanoparticles, process for their preparation and their use |
-
2007
- 2007-03-15 DE DE200710012426 patent/DE102007012426A1/en not_active Withdrawn
-
2008
- 2008-02-16 EP EP08002907A patent/EP1970459A1/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040067153A1 (en) * | 2002-08-22 | 2004-04-08 | Atsushi Koide | Method for producing composite metal product |
| EP1696046A1 (en) * | 2003-12-18 | 2006-08-30 | Shimane Prefectual Government | Metal base carbon fiber composite material and process for producing the same |
| JP2006132416A (en) * | 2004-11-05 | 2006-05-25 | Nissan Motor Co Ltd | Internal combustion engine and method of manufacturing combustion chamber component |
| JP2007016262A (en) * | 2005-07-06 | 2007-01-25 | Nissan Motor Co Ltd | Carbon nanotube-containing composite material, and method for producing the same |
Non-Patent Citations (3)
| Title |
|---|
| "Specific Metals and Alloys ED - LAMPMAN S R; ZORC T B", METALS HANDBOOK - PROPERTIES AND SELECTION : NONFERROUS ALLOYS AND SPECIAL-PURPOSE MATERIALS, ASM INTERNATIONAL, USA, 1 October 1990 (1990-10-01), pages 126 - 131,IV, XP007916995, ISBN: 978-0-87170-378-1 * |
| DATABASE WPI Week 200720, Derwent World Patents Index; AN 2007-195306, XP002483568 * |
| EDITORS: LAMPMAN S.R.; ZORC T.B.: "METALS HANDBOOK ASM- Properties and selection: Nonferrous alloys and special-purpose materials.", vol. 2, 1 October 1990, ASTM, USA, ISBN: 0871703785, article "Specific Metals and Alloys. Properties of Cast Aluminum Alloys. Alloy 206.0, A206.0", pages: 154, XP007917076 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2186918A4 (en) * | 2007-07-05 | 2011-12-14 | Sumitomo Precision Prod Co | HIGHLY HEAT CONDUCTIVE COMPOSITE MATERIAL |
| WO2010133189A1 (en) * | 2009-05-19 | 2010-11-25 | Arno Cloos | Materials comprising carbon nanoparticles and the use thereof |
| FR2947008A1 (en) * | 2009-06-19 | 2010-12-24 | Peugeot Citroen Automobiles Sa | Cylinder head for internal combustion engine i.e. diesel engine, has solid portion provided with intake orifice, and exhaust orifice and water circulation zone i.e. water core, arranged in solid portion |
| WO2018126191A1 (en) * | 2016-12-30 | 2018-07-05 | American Boronite Corporation | Metal matrix composite comprising nanotubes and method of producing same |
| US12173394B2 (en) | 2016-12-30 | 2024-12-24 | American Boronite Corporation | Metal matrix composite comprising nanotubes and method of producing same |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102007012426A1 (en) | 2008-09-18 |
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