JPH09175877A - Copper-impregnated graphite material - Google Patents
Copper-impregnated graphite materialInfo
- Publication number
- JPH09175877A JPH09175877A JP8078461A JP7846196A JPH09175877A JP H09175877 A JPH09175877 A JP H09175877A JP 8078461 A JP8078461 A JP 8078461A JP 7846196 A JP7846196 A JP 7846196A JP H09175877 A JPH09175877 A JP H09175877A
- Authority
- JP
- Japan
- Prior art keywords
- copper
- impregnated
- graphite
- graphite material
- impregnation
- 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.)
- Pending
Links
- 239000007770 graphite material Substances 0.000 title claims abstract description 33
- 239000010949 copper Substances 0.000 claims abstract description 32
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 31
- 229910052802 copper Inorganic materials 0.000 claims abstract description 31
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000011148 porous material Substances 0.000 claims abstract description 22
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 20
- 239000010439 graphite Substances 0.000 claims abstract description 20
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 10
- 238000006243 chemical reaction Methods 0.000 claims abstract description 9
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910052753 mercury Inorganic materials 0.000 claims abstract description 5
- 238000002459 porosimetry Methods 0.000 claims abstract description 3
- 238000005470 impregnation Methods 0.000 claims description 28
- 239000000956 alloy Substances 0.000 claims 1
- 229910045601 alloy Inorganic materials 0.000 claims 1
- 229910000881 Cu alloy Inorganic materials 0.000 abstract description 15
- 238000002844 melting Methods 0.000 abstract description 3
- 230000008018 melting Effects 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 18
- 239000002184 metal Substances 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 7
- 229910052799 carbon Inorganic materials 0.000 description 6
- 239000003575 carbonaceous material Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000009257 reactivity Effects 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 239000007769 metal material Substances 0.000 description 3
- 229910052787 antimony Inorganic materials 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 230000001186 cumulative effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910052726 zirconium Inorganic materials 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
- KGHMFMDJVUVBRY-UHFFFAOYSA-N antimony copper Chemical compound [Cu].[Sb] KGHMFMDJVUVBRY-UHFFFAOYSA-N 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000009694 cold isostatic pressing Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000005087 graphitization Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910052735 hafnium Inorganic materials 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 229910052706 scandium Inorganic materials 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- 239000000080 wetting agent Substances 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/10—Nuclear fusion reactors
Landscapes
- Ceramic Products (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明はプラズマ核融合炉の
プラズマ対向部材や宇宙航空機用部材など高温に曝され
る構造部材として適した銅含浸黒鉛材に関する。TECHNICAL FIELD The present invention relates to a copper-impregnated graphite material suitable as a structural member exposed to a high temperature such as a plasma facing member of a plasma fusion reactor and a member for space aircraft.
【０００２】[0002]
【従来の技術】黒鉛は金属に比べて軽量（真密度約２．
１６Ｍｇ／ｍ３）で、３０００℃を超える温度でも融
解、分解を起こさず、しかも高温になる程寧ろ機械的強
度が高まるなど、高温材料として優れた特性を発揮する
が、この黒鉛の性質を更に改良するために銅あるいはそ
の他の金属を黒鉛に含浸することが行われている。とり
わけ銅の黒鉛材料への含浸は、電気伝導性、熱伝導性の
向上、しゅう動性の向上、機械的特性の改善、ガス透過
の低減などを目的として、広く工業的に実施されてい
る。2. Description of the Related Art Graphite is lighter than metal (true density of about 2.
16Mg / m 3 ), it does not melt and decompose even at temperatures over 3000 ° C, and exhibits excellent properties as a high temperature material, such as higher mechanical strength rather than higher temperature. To improve, graphite has been impregnated with copper or other metals. In particular, impregnation of copper into a graphite material is widely carried out industrially for the purpose of improving electrical conductivity, thermal conductivity, sliding property, improving mechanical properties, and reducing gas permeation.
【０００３】しかしながら、一般的に銅融液は黒鉛に対
してぬれが悪く、気孔中に含浸した際に気孔壁に十分密
着せず、微視的に含浸むらが生じ、その結果上述の特性
改良が十分に達成できないという問題点があった。However, in general, the copper melt does not wet the graphite well, and when impregnated into the pores, it does not sufficiently adhere to the pore walls, resulting in microscopic impregnation unevenness, resulting in the above-mentioned characteristic improvement. There was a problem that could not be achieved sufficiently.
【０００４】含浸むらをなくす１つの方策として、特開
昭５１−２４５２５号公報には、焼成炭素材への含浸
に、ぬれ剤としてＴｉ、Ｚｒ又はＳｉを添加した銅合金
を用いることが教示されている。As one measure for eliminating uneven impregnation, JP-A-51-24525 teaches the use of a copper alloy containing Ti, Zr or Si as a wetting agent for impregnating a fired carbon material. ing.
【０００５】また、これよりも関連性は薄いが、特開昭
６１−１３６６４４号公報には、含浸金属のぬれ性改良
剤としてある種の金属の塩を用い、あらかじめこの金属
塩を含浸し熱分解して金属を気孔壁に付着させた後に、
例えばアンチモンやアンチモン銅を含浸する金属含浸炭
素すり板材の製造が教示されている。Although less relevant than this, in JP-A-61-136644, a metal salt of a certain kind is used as a wettability improving agent for an impregnated metal and impregnated with this metal salt in advance. After decomposing and attaching metal to the pore wall,
For example, the manufacture of metal-impregnated carbon ground sheet material impregnated with antimony or antimony copper is taught.
【０００６】[0006]
【発明が解決しようとする課題】しかしながら、上記特
開昭５１−２４５２５号公報に具体的に記載されている
銅含浸炭素材は、１２００〜１５００℃程度で焼成され
たかさ比重の低い所謂焼成ブロック材にしゅう動性を与
えるために比較的多量の銅（融点約１０８３℃）を含浸
したものであり、炭素材料の軽量高温材料としての特長
が損なわれてしまう。しかも、含浸温度を低下させるた
めと、しゅう動性を高めるためにＳｎ、Ｓｂ等を添加す
るが、これらはしゅう動性以外の特性の改良には寧ろマ
イナスとなる可能性もある。また、Ｔｉは炭素との親和
性が相対的に高過ぎるため、含浸後の含浸金属材と炭素
材との分離を困難にさせるという不都合があった。However, the copper-impregnated carbon material specifically described in JP-A-51-24525 described above is a so-called fired block having a low bulk specific gravity fired at about 1200 to 1500 ° C. Since the material is impregnated with a relatively large amount of copper (melting point: about 1083 ° C.) in order to give the material a sliding property, the characteristics of the carbon material as a lightweight high temperature material are impaired. Moreover, Sn, Sb, etc. are added in order to lower the impregnation temperature and to enhance the sliding property, but these may be rather negative for improving the properties other than the sliding property. Further, since Ti has a relatively high affinity for carbon, there is a disadvantage that it becomes difficult to separate the impregnated metal material after impregnation and the carbon material.
【０００７】本発明者らは、上記従来技術の問題点を解
決し、緻密、軽量で、しかも取扱性に優れた銅含浸黒鉛
材を得るべく鋭意検討の結果、均質なマクロ組織を有し
緻密で高温材料としてとりわけ優れた特性を発揮する等
方性黒鉛を用いた場合も、銅及び黒鉛との親和性が何れ
も高いある種の元素群を銅の添加剤として選択使用する
ことにより、銅をむらなく含浸でき、軽量高温材料とし
ての特長を保ちながら、取扱性にも優れた銅含浸黒鉛材
が得られることを見い出し、本発明を完成するに至っ
た。The inventors of the present invention have made earnest studies to solve the above-mentioned problems of the prior art and obtain a copper-impregnated graphite material that is dense, lightweight, and excellent in handleability. Even when using isotropic graphite that exhibits particularly excellent properties as a high-temperature material, by selectively using a certain element group having a high affinity for both copper and graphite as an additive for copper, copper It has been found that a copper-impregnated graphite material that can be uniformly impregnated with copper and has excellent handleability while maintaining the characteristics of a lightweight high-temperature material can be obtained, and completed the present invention.
【０００８】[0008]
【課題を解決するための手段】即ち、本発明は、かさ密
度が１．７６Ｍｇ／ｍ３以上であり、そして水銀圧入法
により測定した開気孔率及び平均気孔半径が夫々５乃至
１８体積％及び０．１乃至２．５μｍである組織的に緻
密な等方性黒鉛材の開気孔の７０体積％以上を、黒鉛及
び銅との反応による標準生成エンタルピー（ΔＨ゜）が
夫々１モルあたり−５０ｋＪ以下である元素群から選ば
れる少なくとも１種の元素１乃至７重量％及び残部が実
質的に銅から成る銅合金により含浸処理され、しかも含
浸後のかさ密度を３．０Ｍｇ／ｍ３以下としたことを特
徴とする銅含浸黒鉛材である。That is, the present invention has a bulk density of 1.76 Mg / m 3 or more, and an open porosity and an average pore radius measured by the mercury intrusion method of 5 to 18% by volume, respectively. The standard enthalpy of formation (ΔH °) of 70% by volume or more of the open pores of the isotropically dense isotropic graphite material having a density of 0.1 to 2.5 μm is −50 kJ per mol, respectively, due to the reaction with graphite and copper. At least one element selected from the following element group is impregnated with a copper alloy having 1 to 7% by weight and the balance substantially consisting of copper, and the bulk density after impregnation is set to 3.0 Mg / m 3 or less. This is a copper-impregnated graphite material.
【０００９】[0009]
【発明の作用】本発明者らは黒鉛気孔中への銅の含浸の
メカニズムを究明するため、最初に理論的な考察により
仮説を立て、次いでこの仮説を実験により検証するとい
う科学的な手法により検討を行なった。即ち、先ず、あ
る物質への異種物質の含浸の完全性が、含浸材、被含浸
材相互の反応性、親和性と深く関係するという着眼に基
づいて、銅及び黒鉛と各種元素との反応性、親和性を確
認した。図１にこれら元素間の反応の標準生成エンタル
ピーを示した。図中のデータの出典はＮｏｒｔｈ−Ｈｏ
ｌｌａｎｄ社刊、Ｃｏｈｅｓｉｏｎ ｉｎ Ｍｅｔａｌ
ｓに記載された数値データである。In order to investigate the mechanism of impregnation of copper into the graphite pores, the present inventors have first made a hypothesis by theoretical consideration and then verified this hypothesis experimentally by a scientific method. A study was conducted. That is, first, based on the viewpoint that the impregnation of a certain substance with a different substance is closely related to the reactivity and affinity of the impregnated material and the impregnated material, the reactivity of copper and graphite with various elements , Confirmed the affinity. Figure 1 shows the standard enthalpies of formation of the reactions between these elements. The data source in the figure is North-Ho
Published by land, Cohesion in Metal
It is the numerical data described in s.
【００１０】次いで、図中の各元素の中から、銅含浸の
完全性を高められる助剤の候補が、黒鉛及び銅との反応
の標準生成エンタルピーが何れも低い、即ち負の数値
で、かつ絶対値も高い元素であるとの仮説を立て、実験
による検証を試みた。Next, among the elements shown in the figure, the candidates for the auxiliary agent which can enhance the completeness of the copper impregnation are low standard enthalpies of formation of the reaction with graphite and copper, that is, negative values, and We made a hypothesis that the element has a high absolute value, and attempted verification by experiments.
【００１１】その結果、図１のエンタルピー値と含浸の
メカニズムとが以下に説明する様に関連を持つことが確
認できた。As a result, it was confirmed that the enthalpy value in FIG. 1 and the mechanism of impregnation have a relationship as described below.
【００１２】即ち、例えばＴｉは黒鉛との反応性は高い
が銅との反応性が低く、このためＴｉ炭化物の生成やＣ
ｕＴｉと黒鉛との界面接着力の面では有利であるが、反
面表層部での炭化物の生成が優勢になるため、ＣｕＴｉ
の組織内奥への含浸が阻害されたり、含浸後の含浸金属
材と黒鉛材との分離が困難になるなどの不都合が生ず
る。これに対して、黒鉛及び銅との標準生成エンタルピ
ーが何れも低いと、炭化物生成、界面接着力、含浸材の
組織内奥までの浸透が良く、しかも含浸後の含浸金属材
と黒鉛材との分離も容易となる。そして、これらの作用
が得られる黒鉛及び銅との反応のエンタルピーのしきい
値が、約−５０ｋＪ／モルであることが分った。この条
件に合う元素は、例えばＳｃ，Ｙ、Ｚｒ、Ｌａ、Ｈｆで
ある。That is, for example, Ti has a high reactivity with graphite but a low reactivity with copper, which results in the formation of Ti carbide and C
It is advantageous in terms of interfacial adhesion between uTi and graphite, but on the other hand, the formation of carbide in the surface layer becomes dominant, so CuTi
However, there are disadvantages such as impeding the impregnation into the inner part of the tissue and making it difficult to separate the impregnated metal material and the graphite material after impregnation. On the other hand, if the standard enthalpies of formation with graphite and copper are both low, carbide formation, interfacial adhesion, penetration into the deep inside of the structure of the impregnated material is good, and furthermore, the impregnated metal material after impregnation and the graphite material Separation becomes easy. Then, it was found that the threshold value of the enthalpy of the reaction with graphite and copper for obtaining these effects is about -50 kJ / mol. Elements that meet this condition are, for example, Sc, Y, Zr, La, and Hf.
【００１３】この様な条件の含浸助剤を選択使用するこ
とにより、本発明で使用するかさ密度が１．７６Ｍｇ／
ｍ３以上であり、そして水銀圧入法により測定した開気
孔率及び平均気孔半径が夫々５乃至１８体積％及び０．
１乃至２．５μｍである様な組織的に極めて緻密で、従
って含浸が非常に困難な等方性黒鉛材へも銅を多量且つ
組織内奥まで含浸でき、含浸率を７０体積％以上として
もかさ密度が３Ｍｇ／ｍ３以下という、軽量且つ緻密な
組織の銅含浸黒鉛材が得られ、しかも含浸後の取扱性も
良くなる。なお、含浸助剤の量を１〜７重量％と規定し
たのは、１重量％未満では上記の様な作用が十分に得ら
れず、７重量％を超すと含浸後の含浸銅合金と銅含浸黒
鉛材との分離が困難になるためである。By selectively using the impregnation aid under such conditions, the bulk density used in the present invention is 1.76 Mg /
m 3 or more, and the open porosity and average pore radius measured by mercury porosimetry are 5 to 18% by volume and 0.
It is possible to impregnate a large amount of copper into the isotropic graphite material, which is extremely dense in terms of structure such as 1 to 2.5 μm, and is therefore very difficult to impregnate, and to penetrate deep into the structure, and the impregnation rate is 70% by volume or more. A lightweight and dense copper-impregnated graphite material having a bulk density of 3 Mg / m 3 or less is obtained, and the handleability after impregnation is improved. The amount of the impregnation aid is defined as 1 to 7% by weight because the above-described action cannot be sufficiently obtained when the amount is less than 1% by weight, and when the amount exceeds 7% by weight, the impregnated copper alloy and copper after impregnation are This is because it becomes difficult to separate it from the impregnated graphite material.
【００１４】[0014]
【発明の構成の詳細な説明】本発明で使用する等方性黒
鉛材は、通常はコークス等の骨材にピッチ等のバインダ
ーを加えて混練した後、冷間等方圧加圧成形を施し、焼
成、黒鉛化に、必要に応じてピッチ含浸、再焼成、樹脂
含浸、高純度化等の工程を経た、炭素のみから実質的に
成る材料乃至は炭素を主成分とする材料から成り、ピッ
チ含浸品、樹脂含浸品等の含浸品を包含する所謂黒鉛化
品等の等方性黒鉛材料を包含する。これらの等方性黒鉛
材としては、特に異方比が１．２以下の等方性の高い黒
鉛材料を用いることが好ましい。ここで、異方比が１．
２以下であるとは、黒鉛材料における任意に直角をなす
方向に図った固有電気抵抗の比の平均値が１．２以下で
あることを意味する。DETAILED DESCRIPTION OF THE STRUCTURE OF THE INVENTION The isotropic graphite material used in the present invention is usually obtained by adding a binder such as pitch to an aggregate such as coke and kneading the mixture and then subjecting it to cold isostatic pressing. , Pitch, impregnation, re-calcination, resin impregnation, purification, etc. as necessary for firing, graphitization, and a pitch consisting of a material consisting essentially of carbon or a material containing carbon as the main component. It includes isotropic graphite materials such as so-called graphitized products including impregnated products and resin-impregnated products. As these isotropic graphite materials, it is particularly preferable to use highly isotropic graphite materials having an anisotropic ratio of 1.2 or less. Here, the anisotropic ratio is 1.
The value of 2 or less means that the average value of the ratios of the specific electric resistances of the graphite materials in the directions perpendicular to each other is 1.2 or less.
【００１５】本発明でいう等方性黒鉛材の平均気孔半径
は、例えば水銀圧入法により測定される累積気孔容積
（ｍ３／Ｍｇ）の１／２に相当する半径値（μｍ）とし
て決定することができ、開気孔率は（かさ密度）×（全
気孔容積）×１００で計算することができる。ここで、
全気孔容積（ｍ３／Ｍｇ）は圧力が予め定めた最高圧
力、例えば９８ＭＰａまで達したときの累積気孔容積を
いう。また、含浸率が７０体積％以上であるとは、式：
Ｉ＝１００Ｇ／ＰＤのＩ（％）で示される数値が７０以
上であることを意味する。但し、Ｐは等方性黒鉛材の開
気孔の体積の実測値（ｍ３）、Ｄは銅合金含浸材の真密
度（Ｍｇ／ｍ３）、Ｇは実際に含浸した銅合金の重量
（Ｍｇ）を表す。つまり、Ｉ値は開気孔に占める含浸銅
合金の体積割合を示す。The average pore radius of the isotropic graphite material in the present invention is determined as a radius value (μm) corresponding to 1/2 of the cumulative pore volume (m 3 / Mg) measured by the mercury intrusion method, for example. The open porosity can be calculated by (bulk density) × (total pore volume) × 100. here,
The total pore volume (m 3 / Mg) refers to the cumulative pore volume when the pressure reaches a predetermined maximum pressure, for example, 98 MPa. Further, the impregnation rate is 70% by volume or more means that the formula:
It means that the numerical value indicated by I (%) of I = 100 G / PD is 70 or more. Here, P is the measured value of the open pore volume of the isotropic graphite material (m 3 ), D is the true density of the copper alloy impregnated material (Mg / m 3 ), and G is the weight of the actually impregnated copper alloy (Mg ) Represents. That is, the I value represents the volume ratio of the impregnated copper alloy in the open pores.
【００１６】含浸は、例えば耐圧容器を用い、銅合金を
炭素製等のセラミック容器（るつぼ）に入れ、また等方
性黒鉛材を炭素製等のセラミック容器（サガー）に入
れ、これらるつぼ、サガーを耐圧容器に装入し、次いで
容器内を含浸銅合金の融点より高い温度に上げて加圧含
浸する。加圧力は数ＭＰａ乃至１５０ＭＰａ程度、含浸
時間は１〜６０分程度、好ましくは３０乃至６０分程度
でよい。For the impregnation, for example, a pressure vessel is used, copper alloy is put in a ceramic container (crucible) made of carbon, and isotropic graphite material is put in a ceramic container (sagar) made of carbon. Is charged into a pressure resistant container, and then the temperature inside the container is raised to a temperature higher than the melting point of the impregnated copper alloy for pressure impregnation. The applied pressure may be about several MPa to 150 MPa, and the impregnation time may be about 1 to 60 minutes, preferably about 30 to 60 minutes.
【００１７】なお、本発明において使用する銅合金の組
成について、「残部が実質的に銅から成る」とは、残部
を構成する銅に不可避的な不純物が含まれていてもよい
ことを意味する。Regarding the composition of the copper alloy used in the present invention, the phrase "the balance is substantially composed of copper" means that the copper forming the balance may contain inevitable impurities. .
【００１８】[0018]
実施例１ 東洋炭素（株）製の緻密質等方性黒鉛材（かさ密度１．
８２Ｍｇ／ｍ３、開気孔率１３．７％，平均気孔半径
１．５μｍ）を耐圧容器に収容し、１１５０℃で溶融し
た７重量％のＺｒを添加した銅をＮ２ガスにて１２ＭＰ
ａの圧力で１時間加圧含浸して銅含浸黒鉛材を得た。Example 1 A dense isotropic graphite material manufactured by Toyo Tanso Co., Ltd. (bulk density 1.
82Mg / m 3 , open porosity 13.7%, average pore radius 1.5 μm) was housed in a pressure vessel, and 7 wt% Zr-added copper melted at 1150 ° C. was added with N 2 gas to obtain 12MP.
A copper-impregnated graphite material was obtained by pressure impregnation for 1 hour at a pressure of a.
【００１９】含浸率、得られた銅合金含浸材のかさ密
度、銅合金含浸材のガス透過率、及び含浸後の取扱性を
表１にまとめた。Table 1 shows the impregnation rate, the bulk density of the obtained copper alloy impregnated material, the gas permeability of the copper alloy impregnated material, and the handling property after impregnation.
【００２０】[0020]
【表１】 [Table 1]
【００２１】対照例１ 銅にＺｒを添加しない以外は実施例１と同様にして銅含
浸黒鉛材を得た。Control Example 1 A copper-impregnated graphite material was obtained in the same manner as in Example 1 except that Zr was not added to copper.
【００２２】比較例１ 銅に１重量％のＴｉを添加した以外は実施例１と同様に
して銅含浸黒鉛材を得た。Comparative Example 1 A copper-impregnated graphite material was obtained in the same manner as in Example 1 except that 1% by weight of Ti was added to copper.
【００２３】また、実施例１に係る本発明品、対照例
１、比較例１及び実施例１で使用した等方性黒鉛基材の
室温、２００℃、４００℃及び８００℃における熱伝導
率をレーザーフラッシュ法で測定した。その結果を表２
に示す。Further, the thermal conductivity at room temperature, 200 ° C., 400 ° C. and 800 ° C. of the isotropic graphite base material used in Example 1 of the present invention, Comparative Example 1, Comparative Example 1 and Example 1 was measured. It was measured by the laser flash method. Table 2 shows the results.
Shown in
【００２４】[0024]
【表２】 [Table 2]
【００２５】ＣｕをＺｒと合金化することによって、黒
鉛材との接着性を向上させるだけでなく高い熱伝導率の
黒鉛材を得られる。By alloying Cu with Zr, not only the adhesion to the graphite material is improved but also a graphite material having high thermal conductivity can be obtained.
【００２６】[0026]
【発明の効果】本発明によれば、均質なマクロ組織を有
し緻密で高温材料としてとりわけ優れた特性を発揮する
等方性黒鉛を用いても銅をむらなく含浸でき、軽量高温
材料としての特長を保ちながら、緻密で、取扱性にも優
れた銅含浸黒鉛材が得られる。EFFECTS OF THE INVENTION According to the present invention, even if isotropic graphite having a homogeneous macrostructure and exhibiting excellent characteristics as a dense and high temperature material is used, copper can be uniformly impregnated, and a lightweight high temperature material can be obtained. A copper-impregnated graphite material that is dense and easy to handle while maintaining its characteristics can be obtained.
【図１】図１は各種元素と黒鉛及び銅との反応による標
準生成エンタルピーを示した折れ線図である。図中●
（黒丸）は黒鉛との反応によるものを示し、〇（白丸）
は銅との反応によるものを示す。FIG. 1 is a polygonal diagram showing standard enthalpies of formation due to reactions of various elements with graphite and copper. In the figure ●
(Black circle) indicates that the reaction with graphite, ○ (white circle)
Indicates a reaction with copper.
Claims (1)
り、そして水銀圧入法により測定した開気孔率及び平均
気孔半径が夫々５乃至１８体積％及び０．１乃至２．５
μｍである組織的に緻密な等方性黒鉛材の開気孔の７０
体積％以上を、黒鉛及び銅との反応による標準生成エン
タルピーが夫々１モルあたり−５０ｋＪ以下である元素
群から選ばれる少なくとも１種の元素１乃至７重量％及
び残部が実質的に銅から成る銅合金により含浸処理さ
れ、しかも含浸後のかさ密度を３．０Ｍｇ／ｍ３以下と
したことを特徴とする銅含浸黒鉛材。1. A bulk density of 1.76 Mg / m 3 or more, and an open porosity and an average pore radius measured by mercury porosimetry of 5 to 18% by volume and 0.1 to 2.5, respectively.
70 μm of the open pores of isotropically graphite material that is
Copper containing at least 1% by weight of at least one element selected from the group of elements having a standard enthalpy of formation by reaction with graphite and copper of -50 kJ or less per mol in a volume% or more and the balance substantially copper A copper-impregnated graphite material which is impregnated with an alloy and has a bulk density after impregnation of 3.0 Mg / m 3 or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8078461A JPH09175877A (en) | 1995-10-27 | 1996-02-23 | Copper-impregnated graphite material |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7-315738 | 1995-10-27 | ||
| JP31573895 | 1995-10-27 | ||
| JP8078461A JPH09175877A (en) | 1995-10-27 | 1996-02-23 | Copper-impregnated graphite material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09175877A true JPH09175877A (en) | 1997-07-08 |
Family
ID=26419520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8078461A Pending JPH09175877A (en) | 1995-10-27 | 1996-02-23 | Copper-impregnated graphite material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09175877A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000027776A1 (en) | 1998-11-11 | 2000-05-18 | Advanced Materials International Company, Ltd. | Carbon-based metal composite material, method for preparation thereof and use thereof |
| WO2000036169A1 (en) * | 1998-12-16 | 2000-06-22 | Victorian Rail Track | Low resistivity materials with improved wear performance for electrical current transfer and methods for preparing same |
| US6933531B1 (en) | 1999-12-24 | 2005-08-23 | Ngk Insulators, Ltd. | Heat sink material and method of manufacturing the heat sink material |
| KR100710398B1 (en) * | 1999-06-11 | 2007-04-24 | 도탄카코 가부시키가이샤 | Carbon-based metal composite board-shaped material and method for producing the same |
| JP2010007857A (en) * | 2009-08-20 | 2010-01-14 | Hitachi Appliances Inc | Refrigerant compressor |
| WO2010084824A1 (en) * | 2009-01-22 | 2010-07-29 | 電気化学工業株式会社 | Aluminum/graphite composite, and heat radiation part and led luminescent member both formed using same |
| WO2015159709A1 (en) * | 2014-04-15 | 2015-10-22 | 東洋炭素株式会社 | Graphite-copper composite electrode material and electrode for electrical discharge machining using said material |
-
1996
- 1996-02-23 JP JP8078461A patent/JPH09175877A/en active Pending
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000027776A1 (en) | 1998-11-11 | 2000-05-18 | Advanced Materials International Company, Ltd. | Carbon-based metal composite material, method for preparation thereof and use thereof |
| US6649265B1 (en) | 1998-11-11 | 2003-11-18 | Advanced Materials International Company, Ltd. | Carbon-based metal composite material, method for preparation thereof and use thereof |
| WO2000036169A1 (en) * | 1998-12-16 | 2000-06-22 | Victorian Rail Track | Low resistivity materials with improved wear performance for electrical current transfer and methods for preparing same |
| KR100710398B1 (en) * | 1999-06-11 | 2007-04-24 | 도탄카코 가부시키가이샤 | Carbon-based metal composite board-shaped material and method for producing the same |
| US6933531B1 (en) | 1999-12-24 | 2005-08-23 | Ngk Insulators, Ltd. | Heat sink material and method of manufacturing the heat sink material |
| WO2010084824A1 (en) * | 2009-01-22 | 2010-07-29 | 電気化学工業株式会社 | Aluminum/graphite composite, and heat radiation part and led luminescent member both formed using same |
| JPWO2010084824A1 (en) * | 2009-01-22 | 2012-07-19 | 電気化学工業株式会社 | Aluminum-graphite composite, heat dissipation component using the same, and LED light-emitting member |
| JP2010007857A (en) * | 2009-08-20 | 2010-01-14 | Hitachi Appliances Inc | Refrigerant compressor |
| WO2015159709A1 (en) * | 2014-04-15 | 2015-10-22 | 東洋炭素株式会社 | Graphite-copper composite electrode material and electrode for electrical discharge machining using said material |
| JP2015212005A (en) * | 2014-04-15 | 2015-11-26 | 東洋炭素株式会社 | Graphite-copper composite electrode material, and electrode for electrical discharge processing using the same |
| CN106163985A (en) * | 2014-04-15 | 2016-11-23 | 东洋炭素株式会社 | Graphite-copper combination electrode material and the electro-discharge machining electrode using this material |
| KR20160143828A (en) * | 2014-04-15 | 2016-12-14 | 토요 탄소 가부시키가이샤 | Graphite-copper composite electrode material and electrode for electrical discharge machining using said material |
| EP3133048A4 (en) * | 2014-04-15 | 2017-12-27 | Toyo Tanso Co., Ltd. | Graphite-copper composite electrode material and electrode for electrical discharge machining using said material |
| CN106163985B (en) * | 2014-04-15 | 2019-05-28 | 东洋炭素株式会社 | Graphite-copper composite electrode material and electrode for electrical discharge machining using the same |
| US10357838B2 (en) | 2014-04-15 | 2019-07-23 | Toyo Tanso Co., Ltd. | Graphite-copper composite electrode material and electrical discharge machining electrode using the material |
| TWI673724B (en) * | 2014-04-15 | 2019-10-01 | 日商東洋炭素股份有限公司 | Graphite-copper composite electrode material and electrode for electric discharge machining using the same |
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