JPH111731A - Manufacture of metal-ceramic composite material - Google Patents
Manufacture of metal-ceramic composite materialInfo
- Publication number
- JPH111731A JPH111731A JP16667397A JP16667397A JPH111731A JP H111731 A JPH111731 A JP H111731A JP 16667397 A JP16667397 A JP 16667397A JP 16667397 A JP16667397 A JP 16667397A JP H111731 A JPH111731 A JP H111731A
- Authority
- JP
- Japan
- Prior art keywords
- metal
- composite material
- ceramic
- preform
- powder
- 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
- 239000000919 ceramic Substances 0.000 title claims abstract description 36
- 239000002131 composite material Substances 0.000 title claims abstract description 29
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 20
- 229910052751 metal Inorganic materials 0.000 claims abstract description 33
- 239000002184 metal Substances 0.000 claims abstract description 32
- 239000000843 powder Substances 0.000 claims abstract description 20
- 239000012779 reinforcing material Substances 0.000 claims abstract description 11
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 10
- 239000000956 alloy Substances 0.000 claims abstract description 10
- 239000000835 fiber Substances 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 23
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 11
- 239000002245 particle Substances 0.000 claims description 11
- 229910052782 aluminium Inorganic materials 0.000 claims description 10
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- 239000011148 porous material Substances 0.000 abstract description 27
- 229910000838 Al alloy Inorganic materials 0.000 abstract description 16
- 229910052802 copper Inorganic materials 0.000 abstract description 12
- 229910052725 zinc Inorganic materials 0.000 abstract description 12
- 238000001816 cooling Methods 0.000 abstract description 5
- 230000000149 penetrating effect Effects 0.000 abstract description 4
- 229910018404 Al2 O3 Inorganic materials 0.000 abstract 1
- 230000004927 fusion Effects 0.000 abstract 1
- 230000035515 penetration Effects 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 6
- 238000000465 moulding Methods 0.000 description 6
- 230000008595 infiltration Effects 0.000 description 4
- 238000001764 infiltration Methods 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910018566 Al—Si—Mg Inorganic materials 0.000 description 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- LFYJSSARVMHQJB-QIXNEVBVSA-N bakuchiol Chemical compound CC(C)=CCC[C@@](C)(C=C)\C=C\C1=CC=C(O)C=C1 LFYJSSARVMHQJB-QIXNEVBVSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- -1 ductility Chemical class 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
Landscapes
- Manufacture Of Alloys Or Alloy Compounds (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、金属に強化材を複
合させる金属−セラミックス複合材料の製造方法に関
し、特にポアを少なくすることのできる金属−セラミッ
クス複合材料の製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a metal-ceramic composite material in which a metal is combined with a reinforcing material, and more particularly to a method for producing a metal-ceramic composite material capable of reducing pores.
【０００２】[0002]
【従来の技術】セラミックス繊維または粒子で強化され
た金属−セラミックスの複合材料は、金属とセラミック
スの両方の特性を兼ね備えており、例えば、この複合材
料は、高剛性、低熱膨張性、耐摩耗性等のセラミックス
の優れた特性と、延性、高靱性、高熱伝導性等の金属の
優れた特性を備えている。このように、従来から難しい
とされていたセラミックスと金属の両方の特性を備えて
いるため、機械装置メーカ等の業界から次世代の材料と
して注目されている。2. Description of the Related Art A metal-ceramic composite material reinforced with ceramic fibers or particles has the properties of both a metal and a ceramic. For example, this composite material has high rigidity, low thermal expansion, and wear resistance. And other excellent characteristics of metals such as ductility, high toughness, and high thermal conductivity. As described above, since it has both the characteristics of ceramics and metal, which have been considered difficult, it has been drawing attention as a next-generation material from industries such as mechanical device manufacturers.
【０００３】この複合材料、特に金属としてアルミニウ
ムをマトリックスとする複合材料の製造方法は、粉末冶
金法、高圧鋳造法、真空鋳造法等の方法が従来から知ら
れている。しかし、これらの方法は、強化材であるセラ
ミックスの含有量を多くできない、あるいは大型の加圧
装置が必要である、もしくはニアネット成形が困難であ
る、コストが極めて高いなどの理由により、いずれも満
足できるものではなかった。As a method for producing this composite material, particularly a composite material using aluminum as a matrix as a metal, methods such as powder metallurgy, high pressure casting, and vacuum casting have been conventionally known. However, all of these methods are not capable of increasing the content of ceramics as a reinforcing material, require a large-sized pressurizing device, are difficult to form near nets, and are extremely expensive. It was not satisfactory.
【０００４】そこで最近では、上記問題を解決する製造
方法として、米国ランクサイド社が開発した非加圧金属
浸透法が特に注目されている。この方法は、ＳｉＣやＡ
ｌ2Ｏ3などのセラミックス粉末で形成されたプリフォー
ムに、アルミニウムインゴットを接触させ、これをＮ2
雰囲気中で７００〜９００℃に加熱して溶融したアルミ
ニウム合金をプリフォームに含浸させる方法である。こ
れは、化学反応を利用してセラミックス粉末への溶融金
属の濡れ性を改善することにより、加圧しなくても金属
をプリフォームに含浸できるようにした優れた方法であ
る。Accordingly, recently, a non-pressurized metal infiltration method developed by Rankside Company of the United States has attracted particular attention as a manufacturing method for solving the above problem. This method uses SiC or A
l to 2 O 3 preform formed of ceramic powder, such as, by contacting the aluminum ingots, which N 2
This is a method of impregnating a preform with an aluminum alloy that has been heated to 700 to 900 ° C. and melted in an atmosphere. This is an excellent method in which the preform can be impregnated with the metal without applying pressure by improving the wettability of the molten metal to the ceramic powder using a chemical reaction.
【０００５】また、この方法では、セラミックスの含有
率を３０〜８５ｖｏｌ％と広く、かつ高い範囲まで変え
ることができ、しかも、この方法で形成されたプリフォ
ームは、その形状の自由度が高いので、かなり複雑な形
状をニアネットで作ることも可能である。このようにこ
の方法は、加圧装置が不要であり、セラミックスの含有
率を高くすることができ、ニアネット成形も可能となる
方法であるので、前記した問題が解決される優れた方法
である。Further, according to this method, the content of ceramics can be varied as wide as 30 to 85 vol% and a high range, and the preform formed by this method has a high degree of freedom in its shape. It is also possible to make quite complex shapes with near nets. As described above, this method does not require a pressurizing device, can increase the content of ceramics, and enables near-net molding. Therefore, this method is an excellent method that solves the above-described problem. .
【０００６】[0006]
【発明が解決しようとする課題】しかしながら、この製
造方法では、複合材料中にポアと呼ばれる空洞欠陥が生
成することがあった。一般のポアは、材料中に含まれる
ガスが抜けきらないために生成する、いわゆる気孔と呼
ばれるポアであるが、この複合材料中のポアは、これと
は別のメカニズムにより生成するものと思われる。その
一つは、溶融したアルミニウム合金の浸透が十分でない
ことによるもので、例えばプリフォームの外側が先に浸
透を完了してしまうような場合、浸透を助けるＮ2の内
部への供給が一部遮断され、金属の浸透がプリフォーム
内で均一に進行しないこととなり、その結果、浸透が不
十分となってポアが生成するものと思われる。これは、
プリフォームと金属との組み合わせ方や浸透方向を適切
にすることによって、防ぐことができる。However, in this manufacturing method, a cavity defect called a pore may be generated in the composite material. General pores are so-called pores that are generated because the gas contained in the material does not escape, but the pores in this composite material are thought to be generated by another mechanism. . One is due to that the penetration of molten aluminum alloy is not sufficient, for example if the outer preform that would complete penetration above the supply part to the interior of the N 2 to assist penetration It is believed that this is blocked and metal penetration does not proceed uniformly within the preform, resulting in poor penetration and the formation of pores. this is,
This can be prevented by appropriately combining the preform with the metal and by appropriately setting the direction of penetration.
【０００７】もう一つは、一旦プリフォームに浸透した
金属が冷却途中で抜け出す、いわゆる引けに起因するポ
アである。これは、金属を浸透させた複合材料の外部が
先ず温度が下がり凝固して収縮するが、その内部につて
はまだ溶融状態にあるため収縮した分引っ張られて移動
することとなり、その結果、引けによるポアが生じるも
のであり、外部が凝固し、かつ内部が溶融している状態
が長く続くほどポアの生成が顕著になる。この溶融状態
を短くすれば引けによるポアの生成が抑えられるので、
その対策として急冷が採られている。しかし、この対策
は、小型部品では有効であるが、大型部品については熱
伝導の遅れにより内部が徐冷気味になるため、効果は少
なかった。The other is pores caused by so-called shrinkage, in which the metal that has once permeated the preform escapes during cooling. This is because the outside of the composite material impregnated with metal first drops in temperature and solidifies and shrinks, but the inside is still in a molten state and is pulled and moved by the shrinkage, resulting in shrinkage. The generation of pores becomes prominent as the state in which the outside is solidified and the inside is melted continues for a long time. By shortening this molten state, pore formation due to shrinkage can be suppressed,
Rapid cooling has been adopted as a countermeasure. However, although this measure is effective for small parts, it has little effect on large parts because the inside tends to be gradually cooled due to delay of heat conduction.
【０００８】本発明は、上述した金属−セラミックス複
合材料の製造方法が有する課題に鑑みなされたものであ
って、その目的は、急冷でなくてもポアを少なくするこ
とのできる金属−セラミックス複合材料の製造方法を提
供することにある。The present invention has been made in view of the problems of the above-described method for producing a metal-ceramic composite material, and has as its object to reduce the number of pores without rapid cooling. It is to provide a manufacturing method of.
【０００９】[0009]
【課題を解決するための手段】本発明者等は、上記目的
を達成するため鋭意研究した結果、ＺｎやＣｕを含む低
い温度で溶融するアルミニウム合金を金属として用いれ
ば、急冷でなくてもポアを少なくすることができるとの
知見を得て本発明を完成するに至った。Means for Solving the Problems The present inventors have conducted intensive studies to achieve the above object. As a result, if an aluminum alloy containing Zn or Cu that is melted at a low temperature is used as a metal, the pores need not be rapidly cooled. The inventors have found that the present invention can be reduced, and have completed the present invention.
【００１０】即ち本発明は、（１）セラミックス繊維ま
たは粒子を強化材としてプリフォームを形成し、そのプ
リフォームに基材である金属を浸透させる金属−セラミ
ックス複合材料の製造方法において、該金属を浸透させ
る方法が、ＺｎもしくはＣｕを単独ないしは共存で０．
５〜１０重量％含むアルミニウムを主成分とする合金を
浸透金属とし、その金属を７００〜１０００℃の温度で
浸透させる方法であることを特徴とする金属−セラミッ
クス複合材料の製造方法（請求項１）とし、また、
（２）セラミックス粒子が、１〜１５０μｍの平均粒径
を有するＳｉＣ粉末またはＡｌ2Ｏ3粉末であることを特
徴とする金属−セラミックス複合材料の製造方法（請求
項２）とすることを要旨とする。以下さらに詳細に説明
する。That is, the present invention provides (1) a method for producing a metal-ceramic composite material in which a preform is formed by using ceramic fibers or particles as a reinforcing material, and a metal as a base material is impregnated into the preform. The method of infiltration is such that Zn or Cu is used alone or coexistently.
A method for producing a metal-ceramic composite material, characterized in that a permeating metal is an alloy mainly containing aluminum containing 5 to 10% by weight, and the metal is permeated at a temperature of 700 to 1000C. ) And
(2) A method for producing a metal-ceramic composite material, wherein the ceramic particles are SiC powder or Al 2 O 3 powder having an average particle diameter of 1 to 150 μm (claim 2). I do. This will be described in more detail below.
【００１１】上記で述べたように複合材料の製造方法と
しては、金属をプリフォームに浸透させる方法を、Ｚｎ
もしくはＣｕを単独ないしは共存で０．５〜１０重量％
含むアルミニウムを主成分とする合金を浸透金属とし、
その金属を７００〜１０００℃の温度で浸透させる方法
とした（請求項１）。浸透させる金属をＺｎおよび／も
しくはＣｕを含むアルミニウム合金とすることにより、
金属の溶融が低温側に移行して溶融されたアルミニウム
合金の粘性が高くなり、その結果、溶融金属の移動が起
き難くなり、引けによるポアの発生が抑えられるものと
思われる。[0011] As described above, as a method of manufacturing a composite material, a method of infiltrating a metal into a preform is described by Zn
Or 0.5 to 10% by weight of Cu alone or in combination
The alloy containing aluminum as the main component is used as the penetrating metal,
A method of infiltrating the metal at a temperature of 700 to 1000 ° C. (Claim 1). By making the metal to be infiltrated into an aluminum alloy containing Zn and / or Cu,
It is considered that the melting of the metal shifts to the low temperature side and the viscosity of the molten aluminum alloy increases, and as a result, the movement of the molten metal becomes difficult to occur and the generation of pores due to shrinkage is suppressed.
【００１２】そのＺｎおよび／もしくはＣｕの含有量と
しては、０．５〜１０重量％が好ましく、０．５重量％
より少ないと融点を低くできない。逆に１０重量％より
多いと合金の酸化が進み、機械的特性が悪化しこれも好
ましくない。Ｚｎ、Ｃｕは単独に用いても効果はある
が、共存して用いると単独の場合より溶融温度を少ない
量で低下させる効果がある。このＺｎ、Ｃｕをアルミニ
ウム合金に含ませるのは、溶融状態の純Ａｌに加えても
よいし、また、ＪＩＳで規定されている合金を購入し、
それを溶融状態にして補ってもよい。要は目的とする組
成が最終的に確保されれば、その履歴は問わない。前記
したＺｎ、Ｃｕのほかに加える金属元素としては、Ｓ
ｉ、Ｍｇなどが挙げられる。The content of Zn and / or Cu is preferably 0.5 to 10% by weight, more preferably 0.5% by weight.
If less, the melting point cannot be lowered. Conversely, if the content is more than 10% by weight, the oxidation of the alloy proceeds, and the mechanical properties deteriorate, which is also undesirable. Although Zn and Cu are effective even when used alone, they have the effect of lowering the melting temperature by a smaller amount when used together when used alone. The inclusion of Zn and Cu in the aluminum alloy may be added to pure Al in a molten state, or an alloy specified by JIS may be purchased,
It may be supplemented in a molten state. In short, as long as the target composition is finally secured, its history does not matter. As a metal element to be added in addition to Zn and Cu described above, S
i, Mg and the like.
【００１３】その内Ｓｉはアルミニウム合金の湯流れを
良くするために用いられるが、そのほかに強化材として
ＳｉＣを用いた場合、溶融アルミニウムとＳｉＣとの間
で加水分解し易いＡｌ4Ｃ3を生成するので、これを防ぐ
ためにある濃度以上あらかじめ添加して用いられる。ま
た、ＭｇはＮ2と反応して溶融アルミニウムと強化材の
濡れ性を改善し、溶融アルミニウムの浸透を促進するた
めに用いられる。このＭｇは一般に粉末にして金属とプ
リフォームの間に置かれるが、溶融金属中にも含まれて
いる方が浸透は短時間でかつ容易となる。Among them, Si is used to improve the flow of aluminum alloy, but when SiC is used as a reinforcing material, Al 4 C 3 which easily hydrolyzes between molten aluminum and SiC is generated. Therefore, in order to prevent this, more than a certain concentration is added in advance and used. Further, Mg reacts with N 2 to improve the wettability between the molten aluminum and the reinforcing material, and is used to promote the penetration of the molten aluminum. This Mg is generally powdered and placed between the metal and the preform, but if it is also contained in the molten metal, the permeation becomes shorter and easier.
【００１４】一方、強化材であるセラミックス粉末とし
ては、１〜１５０μｍの平均粒径を有するＳｉＣまたは
Ａｌ2Ｏ3粉末とした（請求項２）。セラミックス粉末の
種類をＳｉＣまたはＡｌ2Ｏ3粉末としたのは、これら粉
末がアルミニウム金属に浸透され易いことによる。その
粉末の平均粒径としては、１〜１５０μｍが好ましく、
１μｍより細かいとアルミニウムの浸透が難しくなり、
１５０μｍより粗いとプリフォームの形成が難しくな
る。On the other hand, the ceramic powder as the reinforcing material was SiC or Al 2 O 3 powder having an average particle size of 1 to 150 μm. The reason why the type of the ceramic powder is SiC or Al 2 O 3 powder is that these powders easily penetrate into aluminum metal. The average particle size of the powder is preferably from 1 to 150 μm,
If it is smaller than 1 μm, penetration of aluminum becomes difficult,
If it is coarser than 150 μm, it is difficult to form a preform.
【００１５】[0015]
【発明の実施の形態】本発明の製造方法をさらに詳しく
述べると、先ずＳｉＣ粉末、Ａｌ2Ｏ3粉末を用意し、こ
の粉末を用いてプリフォームを形成する。成形方法は、
金属が浸透を終了するまで形態を保っており、かつその
浸透を阻害しない方法であればどんな方法でもよく、例
えば沈降成形法、射出成形法、ＣＩＰ成形法などが挙げ
られる。このうち多用される沈降成形法による成形を述
べると、先ずセラミックス粉末に水、バインダーなどを
加え、これを混合してスラリーを得る。得たスラリーを
成形型に注入して振動を掛け、固形分を沈降させた後、
冷凍して脱型する。これを焼成してプリフォームを形成
する。BEST MODE FOR CARRYING OUT THE INVENTION The manufacturing method of the present invention will be described in more detail. First, a SiC powder and an Al 2 O 3 powder are prepared, and a preform is formed using the powder. The molding method is
Any method may be used as long as the metal retains its shape until it is completely infiltrated and does not inhibit the infiltration, and examples thereof include a sedimentation molding method, an injection molding method, and a CIP molding method. Of these, the molding by the sedimentation molding method, which is frequently used, is described. First, water, a binder, and the like are added to a ceramic powder, and these are mixed to obtain a slurry. After injecting the obtained slurry into a mold and applying vibration to settle solids,
Freeze and demold. This is fired to form a preform.
【００１６】次いで、形成したプリフォームの上部また
は下部にＺｎ、Ｃｕを単独ないしは共存で０．５〜１０
重量％含むアルミニウムを主成分とする合金を置き、窒
素気流中で非加圧で７００〜１０００℃の温度で合金を
浸透させ、冷却することにより、金属−セラミックス複
合材料が得られる。Next, Zn or Cu is used alone or coexistent in the upper or lower part of the formed preform for 0.5 to 10 minutes.
A metal-ceramic composite material is obtained by placing an alloy containing aluminum as a main component and containing the alloy by weight at a temperature of 700 to 1000 ° C. under non-pressurization in a nitrogen gas stream and cooling.
【００１７】以上の方法で金属−セラミックス複合材料
を作製すれば、ポアの少ない金属−セラミックス複合材
料を得ることができる。。If a metal-ceramic composite material is produced by the above method, a metal-ceramic composite material having few pores can be obtained. .
【００１８】[0018]
【実施例】以下、本発明の実施例を比較例とともに具体
的に挙げ、本発明をより詳細に説明する。EXAMPLES Hereinafter, the present invention will be described in more detail with reference to Examples of the present invention and Comparative Examples.
【００１９】（実施例１〜１０） （１）プリフォームの形成 強化材として＃１８０（平均粒径６６μｍ）の市販Ｓｉ
Ｃ粉末７０重量部と＃８００（平均粒径１４μｍ）の市
販ＳｉＣ粉末３０重量部に対し、バインダーとしてアル
ミナ水和物のコロイド液を１０重量部（アルミナ分が２
重量部となる量）添加し、それに消泡剤としてフォーマ
スタＶＬ（サンノブコ社製）を０．２重量部、イオン交
換水を２４重量部加え、媒体を入れてないポットミルで
６４時間混合した。(Examples 1 to 10) (1) Formation of preform Commercially available Si of # 180 (average particle size 66 μm) as a reinforcing material
For 70 parts by weight of C powder and 30 parts by weight of commercially available SiC powder of # 800 (average particle size: 14 μm), 10 parts by weight of a colloid liquid of alumina hydrate as a binder (alumina content is 2 parts)
Then, 0.2 parts by weight of FORMASTER VL (manufactured by Sannobuco) and 24 parts by weight of ion-exchanged water were added as defoaming agents, and mixed in a pot mill containing no medium for 64 hours.
【００２０】得られたスラリーを２００ｍｍ角で２５ｍ
ｍの厚さのプリフォームが成形できるシリコーンゴム型
に流し込み、振動を掛けて固形分を沈降させ、表面に浮
いてきた水分を除き、ゴム型に入れたまま−３０℃に冷
却して冷凍品を得た。得られた冷凍品を脱型し、１０５
０℃で３時間焼成してプリフォーを形成した。The obtained slurry is 25 mm in 200 mm square.
m into a silicone rubber mold that can form a preform of thickness m, shake it to settle solids, remove moisture floating on the surface, cool it to -30 ° C while keeping it in the rubber mold, and freeze it. I got The obtained frozen product is demolded, and 105
By firing at 0 ° C. for 3 hours, a preform was formed.
【００２１】（２）金属−セラミックス複合材料の作製 そのプリフォームの下にプリフォームの２．５倍重量の
表１に示すアルミニウム合金を置き、窒素雰囲気中で８
２５℃の温度で３６時間非加圧浸透させた後、１００℃
／ｈｒで冷却し金属−セラミックス複合材料を作製し
た。(2) Preparation of Metal-Ceramic Composite Material An aluminum alloy shown in Table 1 2.5 times by weight of the preform was placed under the preform, and the aluminum alloy was placed in a nitrogen atmosphere.
After non-pressurized infiltration at a temperature of 25 ° C for 36 hours, 100 ° C
/ Hr to produce a metal-ceramic composite material.
【００２２】（３）評価 得られた複合材料の上面（アルミニウム合金と接触して
いない面）及び下面（アルミニウム合金と接触していた
面）を１ｍｍ程度研削し、その研削面の引けによるポア
の状況を目視観察し、０．３ｍｍ以上の大きさのポアが
認められないものを○とし、０．３以上の大きさのポア
が認められたが、特性には影響が少ない０．３〜０．６
ｍｍの大きさのポアが認められたものを△とし、特性に
大きく影響する０．６ｍｍ以上の大きさのポアが認めら
れたものを×とした。その結果を表１に示す。(3) Evaluation The upper surface (the surface that was not in contact with the aluminum alloy) and the lower surface (the surface that was in contact with the aluminum alloy) of the obtained composite material were ground by about 1 mm, and pores due to the shrinkage of the ground surface. The situation was visually observed, and those in which pores with a size of 0.3 mm or more were not recognized were evaluated as ○, and pores with a size of 0.3 or more were recognized, but the characteristics were hardly affected. .6
A pore having a size of mm was recognized as Δ, and a pore having a size of 0.6 mm or more which greatly affected the characteristics was rated X. Table 1 shows the results.
【００２３】（比較例１〜４）比較のために比較例１〜
３では、ＺｎとＣｕを含まないＡｌ−Ｓｉ−Ｍｇ組成の
アルミニウム合金を浸透させた他は、比較例４では、Ｚ
ｎの含有量を本発明より少なくした他は実施例１と同様
にプリフォームを形成し、複合材料を作製し、評価し
た。その結果を表１に示す。Comparative Examples 1 to 4 Comparative Examples 1 to 4
In Comparative Example 4, the aluminum alloy having an Al—Si—Mg composition containing no Zn and Cu was infiltrated.
A preform was formed in the same manner as in Example 1 except that the content of n was smaller than that of the present invention, and a composite material was prepared and evaluated. Table 1 shows the results.
【００２４】[0024]
【表１】[Table 1]
【００２５】表１から明らかなように、実施例では０．
３ｍｍの大きさのポアがないか、あるいはあっても影響
の少ない０．３〜０．６ｍｍの大きさのポアしか認めら
れなかった。これにより、ＺｎもしくはＣｕを含んだ融
点の低いアルミニウム合金であれば、引けによるポアが
少なくなることを示している。これに対して比較例１〜
３では、ＺｎもしくはＣｕを含んだアルミニウム合金で
ないため、いずれも０．６ｍｍ以上の大きなポアが認め
られた。また、比較例４でも、Ｚｎの量が少ないため、
０．６ｍｍ以上の大きなポアが認められた。As is evident from Table 1, in the embodiment, 0.
There were no pores with a size of 3 mm, or only pores with a size of 0.3 to 0.6 mm, which had little effect even if they were present. This indicates that pores due to shrinkage are reduced with an aluminum alloy having a low melting point containing Zn or Cu. On the other hand, Comparative Examples 1 to
In No. 3, since the alloy was not an aluminum alloy containing Zn or Cu, a large pore of 0.6 mm or more was recognized in each case. Also in Comparative Example 4, since the amount of Zn was small,
Large pores of 0.6 mm or more were observed.
【００２６】[0026]
【発明の効果】以上の通り、本発明の金属−セラミック
ス複合材料の製造方法であれば、特性に悪い影響を及ぼ
すような大きなポアを生じさせない複合材料を作製する
ことができる製造方法とすることができるようになっ
た。このことにより、急冷でなくてもポアを少なくする
ことができるので、品質の良い金属−セラミックス複合
材料を大型部品を含めて製造することのできる方法を提
供できるようになった。As described above, according to the method for producing a metal-ceramic composite material of the present invention, a production method capable of producing a composite material that does not generate large pores that adversely affect the characteristics is provided. Is now available. As a result, the number of pores can be reduced even without quenching, so that a method for manufacturing a high-quality metal-ceramic composite material including large parts can be provided.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 林 睦夫 埼玉県浦和市大牧560 (72)発明者 高橋 平四郎 千葉県松戸市松戸新田314−１ (72)発明者 小山 富和 東京都北区浮間１−３−１−805 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Mutsumi Hayashi 560 Omaki, Urawa City, Saitama Prefecture (72) Inventor Heishiro Takahashi 314-1 Matsudo Nitta, Matsudo City, Chiba Prefecture (72) Inventor Tomiwa Koyama Kita, Tokyo 1-3-805
Claims (2)
してプリフォームを形成し、そのプリフォームに基材で
ある金属を浸透させる金属−セラミックス複合材料の製
造方法において、該金属を浸透させる方法が、Ｚｎもし
くはＣｕを単独ないしは共存で０．５〜１０重量％含む
アルミニウムを主成分とする合金を浸透金属とし、その
金属を７００〜１０００℃の温度で浸透させる方法であ
ることを特徴とする金属−セラミックス複合材料の製造
方法。1. A method for producing a metal-ceramic composite material in which a preform is formed by using ceramic fibers or particles as a reinforcing material and a metal as a base material is impregnated in the preform, wherein the method for infiltrating the metal is Zn. Alternatively, a metal-ceramic is a method in which an alloy mainly containing aluminum containing 0.5 to 10% by weight of Cu alone or coexistent is used as a permeation metal, and the metal is permeated at a temperature of 700 to 1000 ° C. Manufacturing method of composite material.
平均粒径を有するＳｉＣ粉末またはＡｌ2Ｏ3粉末である
ことを特徴とする請求項１記載の金属−セラミックス複
合材料の製造方法。2. The method for producing a metal-ceramic composite material according to claim 1, wherein the ceramic particles are SiC powder or Al 2 O 3 powder having an average particle diameter of 1 to 150 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16667397A JPH111731A (en) | 1997-06-10 | 1997-06-10 | Manufacture of metal-ceramic composite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16667397A JPH111731A (en) | 1997-06-10 | 1997-06-10 | Manufacture of metal-ceramic composite material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH111731A true JPH111731A (en) | 1999-01-06 |
Family
ID=15835610
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16667397A Pending JPH111731A (en) | 1997-06-10 | 1997-06-10 | Manufacture of metal-ceramic composite material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH111731A (en) |
-
1997
- 1997-06-10 JP JP16667397A patent/JPH111731A/en active Pending
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