JP2000288714A - Production of metal-ceramics composite material - Google Patents
Production of metal-ceramics composite materialInfo
- Publication number
- JP2000288714A JP2000288714A JP9712399A JP9712399A JP2000288714A JP 2000288714 A JP2000288714 A JP 2000288714A JP 9712399 A JP9712399 A JP 9712399A JP 9712399 A JP9712399 A JP 9712399A JP 2000288714 A JP2000288714 A JP 2000288714A
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- JP
- Japan
- Prior art keywords
- composite material
- powder
- metal
- preform
- less
- 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.)
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- 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、プリフォームに金
属を浸透させて複合させる金属−セラミックス複合材料
の製造方法に関し、特にそのプリフォームを乾式成形で
形成して成る金属−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 preform is impregnated with a metal to form a composite, and more particularly to a method for producing a metal-ceramic composite material formed by dry-forming the preform. About the method.
【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
たセラミックスと金属の複合材料は、セラミックスと金
属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
優れた特性を、延性、高靭性、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 ceramic-metal composite material reinforced with ceramic fibers or particles has both characteristics of ceramic and metal. For example, this composite material has high rigidity, low thermal expansion property, abrasion resistance, etc. It has the excellent properties of metal such as ductility, high toughness, and high thermal conductivity. As described above, since it has both characteristics of ceramics and metal, which has 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、これらの方法では、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, none of these methods is satisfactory because these methods cannot increase the content of the ceramics as a reinforcing material, require a large-sized pressing device, or are difficult to form near-net. Was.
【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、例えば熱膨張率で６．２×１０-6／℃、
ヤング率で２６５ＧＰａ、破壊靱性で１０ＭＮ／
ｍ3/2、熱伝導度で１７０ｗ／ｍ℃の特性値を有するＳ
ｉＣを７０ｖｏｌ％含む金属−セラミックス複合材料も
容易に作製することができる。さらに、この方法で作製
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る、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, in this method, the ceramic content can be varied as wide as 30 to 85 vol% and a high range. For example, the thermal expansion coefficient is 6.2 × 10 -6 / ° C.
265 GPa in Young's modulus, 10 MN / in fracture toughness
m 3/2 , having a characteristic value of 170 w / m ° C. in thermal conductivity
A metal-ceramic composite material containing 70 vol% iC can also be easily produced. Furthermore, since the preform manufactured by this method has a high degree of freedom in its shape,
It is also possible to make fairly complex shapes with near nets. As described above, this method does not require a pressurizing device, can increase the content of ceramics, and can also perform near-net molding. Therefore, this method is an excellent method that solves the above-described problem. .
【０００６】こうして作製した複合材料は、セラミック
ス、特に最も汎用性の高いＡｌ2Ｏ3と組み合わせて使用
する機会が増えている。こうした組み合わせで使用する
場合、熱膨張率に大きな違いがあると、構造に狂いが生
じたり、反り、破損の可能性すらある。そこで、Ａｌ2
Ｏ3と組み合わせて使う場合には、複合材料中のセラミ
ックスの含有率を変えれば、熱膨張率も変えることがで
きるので、セラミックスの含有率を高くしてＡｌ2Ｏ3の
熱膨張率に近づけた金属−セラミックス複合材料を用い
ている。[0006] The composite material thus produced is increasingly used in combination with ceramics, particularly Al 2 O 3, which is the most versatile. When used in such a combination, if there is a large difference in the coefficient of thermal expansion, the structure may be deformed, warped, or even broken. Therefore, Al 2
When used in combination with O 3 , by changing the content of ceramics in the composite material, the coefficient of thermal expansion can also be changed, so increasing the content of ceramics and approaching the coefficient of thermal expansion of Al 2 O 3 Metal-ceramic composite material.
【０００７】[0007]
【発明が解決しようとする課題】しかしながら、このセ
ラミックスの含有率の高い金属−セラミックス複合材料
を作製するには、セラミックス粉末の充填率の高いプリ
フォームを形成しなければならず、しかもそのプリフォ
ームを形成するには、湿式成形法の一種である沈降成形
法、すなわち水で調製したスラリーを用い、そのスラリ
ー中のセラミックス粉末を沈降させて成形するなどの方
法で形成しなければならないので、プリフォーム中に工
程の短縮、不良率の低減に効果のあるＭｇなどの金属か
ら成る浸透促進材を含ませることができないという問題
があった。However, in order to produce a metal-ceramic composite material having a high content of ceramics, a preform having a high filling rate of ceramic powder must be formed. In order to form the powder, it is necessary to form the powder by a sedimentation molding method, which is a type of wet molding method, that is, by using a slurry prepared with water, and sedimenting and molding the ceramic powder in the slurry. There has been a problem that a penetration enhancer made of a metal such as Mg which is effective in shortening the process and reducing the defective rate cannot be included in the reform.
【０００８】それは、水により金属粉末の酸化、水和反
応が起こるので、金属粉末添加による浸透促進効果が失
われてしまうからである。また、水を用いず、プレスな
どの乾式成形で金属粉末を含んだプリフォームを形成す
る方法もあるが、プレスなどの乾式成形では、セラミッ
クス粉末を密に充填することが難しく、セラミックスの
含有率はせいぜい５０ｖｏｌ％止まりであった。[0008] This is because the oxidation and hydration reaction of the metal powder occurs with water, so that the effect of promoting the penetration by the addition of the metal powder is lost. There is also a method of forming a preform containing metal powder by dry molding such as pressing without using water.However, in dry molding such as pressing, it is difficult to densely fill the ceramic powder, and the ceramic content is low. At most, it stopped at 50 vol%.
【０００９】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、乾式成形でプリフォームを形成して
も高含有率のセラミックス粉末を含む金属−セラミック
ス複合材料が得られる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 produce a ceramic powder having a high content even when a preform is formed by dry molding. It is an object of the present invention to provide a production method by which a metal-ceramic composite material can be obtained.
【００１０】[0010]
【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、適切なセラミックス
粉末を用いてプリフォームを形成すれば、乾式成形でも
高充填率のプリフォームを形成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, and as a result, if a preform is formed using an appropriate ceramic powder, a preform having a high filling ratio can be obtained even in dry molding. The present inventors have obtained the knowledge that they can be formed, and have completed the present invention.
【００１１】即ち本発明は、（１）アスペクト比が３以
下の粒子を少なくとも含み、かつ粒径が２μｍ以下の粒
子を１０重量％以下含むＳｉＣ粉末に、Ｍｇ、Ａｌまた
はＴｉから成る浸透促進材を添加し混合した粉末をプレ
ス機で乾式成形して６０ｖｏｌ％以上の粉末充填率を有
するプリフォームを形成し、その形成したプリフォーム
に溶融したアルミニウム合金を窒素中で非加圧で浸透さ
せ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）アスペクト比が
３以下の粒子を含む量が、４０重量％以上であることを
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（請求項２）とし、さらに、（３）粒径が２
μｍ以下の粒子を含む量が、５〜２重量％であることを
特徴とする請求項１または２記載の金属−セラミックス
複合材料の製造方法（請求項３）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 relates to (1) a permeation enhancer made of Mg, Al or Ti in SiC powder containing at least 10% by weight of particles having an aspect ratio of 3 or less and having a particle size of 2 μm or less. Is added and mixed is dry-formed with a pressing machine to form a preform having a powder filling ratio of 60 vol% or more, and the molten aluminum alloy is infiltrated into the formed preform in nitrogen without pressure. A method for producing a metal-ceramic composite material (Claim 1), wherein (2) the amount of particles having an aspect ratio of 3 or less is 40% by weight or more. (2) The method for producing a metal-ceramic composite material according to the above (claim 2).
The gist of the present invention is to provide a method for producing a metal-ceramic composite material according to claim 1 or 2, wherein the amount of particles containing particles having a size of μm or less is 5 to 2% by weight. This will be described in more detail below.
【００１２】上記で述べたように、本発明の複合材料の
製造方法としては、アスペクト比が３以下の粒子を少な
くとも含み、かつ粒径が２μｍ以下の粒子を１０重量％
以下含むＳｉＣ粉末に、Ｍｇ、ＡｌまたはＴｉから成る
浸透促進材を添加し混合した粉末をプレス機で乾式成形
して６０ｖｏｌ％以上の粉末充填率を有するプリフォー
ムを形成し、その形成したプリフォームに溶融したアル
ミニウム合金を窒素中で非加圧で浸透させることとする
製造方法とした（請求項１）。As described above, the method for producing a composite material according to the present invention includes a method of producing a composite material containing at least particles having an aspect ratio of 3 or less and having a particle size of 2 μm or less by 10% by weight.
A preform having a powder filling rate of 60 vol% or more is formed by dry-molding a powder obtained by adding a permeation enhancer made of Mg, Al or Ti to a SiC powder containing the mixture and pressing the mixture, and forming the preform. The manufacturing method is to infiltrate the molten aluminum alloy in nitrogen without pressure.
【００１３】この製造方法では、先ず適切なセラミック
ス粉末として、アスペクト比が３以下の粒子を少なくと
も含み、かつ粒径が２μｍ以下の粒子を１０重量％以下
含むＳｉＣ粉末を用いる。ＳｉＣ粉末を用いたのは、こ
のＳｉＣ粉末の含有率を高含有率とすれば、熱膨張率が
Ａｌ2Ｏ3に近い複合材料とすることができる上に、高い
剛性を有する複合材料が得られることによる。In this manufacturing method, first, as a suitable ceramic powder, an SiC powder containing at least particles having an aspect ratio of 3 or less and containing 10% by weight or less of particles having a particle size of 2 μm or less is used. The reason for using the SiC powder is that if the content of the SiC powder is set to a high content, a composite material having a coefficient of thermal expansion close to that of Al 2 O 3 and a composite material having high rigidity can be obtained. Depends on
【００１４】そのＳｉＣ粉末としてアスペクト比で３以
下の粒子を用いたのは、アスペクト比が３より大きいと
粒子が角張って粒子間隔が大きくなり、乾式成形では６
０ｖｏｌ％以上の粉末充填率を達成することが難しいこ
とによる。そのアスペクト比が３以下の粒子を含む量
は、全量でなくても構わなく、３０重量％程度以上含め
ばよいが、これを４０重量％以上にすれば（請求項
２）、ＳｉＣ粉末の充填率を６０ｖｏｌ％以上にさらに
し易い。The reason why particles having an aspect ratio of 3 or less are used as the SiC powder is that if the aspect ratio is larger than 3, the particles become angular and the particle spacing becomes large.
This is because it is difficult to achieve a powder filling rate of 0 vol% or more. The amount of the particles having an aspect ratio of 3 or less may not be the entire amount, and may be about 30% by weight or more. If the amount is 40% by weight or more (claim 2), the filling of the SiC powder is performed. The ratio is more easily increased to 60 vol% or more.
【００１５】また、そのＳｉＣ粉末中に粒径が２μｍ以
下の微細粒子を１０重量％以下含むこととしたのは、１
０重量％より多いと溶融したアルミニウム合金の浸透に
障害を生じ、複合材料中に未浸透部分が発生し、好まし
くないことによる。この２μｍ以下の微細粒子の含有量
を５〜２重量％にすれば（請求項３）、浸透の障害がさ
らに生じ難くなり、また微細粒子が少なすぎて粉末充填
率が低下する心配もなくなる。The reason why the SiC powder contains 10% by weight or less of fine particles having a particle size of 2 μm or less is as follows.
If the content is more than 0% by weight, the penetration of the molten aluminum alloy is hindered, and a non-penetrated portion occurs in the composite material, which is not preferable. When the content of the fine particles of 2 μm or less is set to 5 to 2% by weight (claim 3), the impediment to penetration is further reduced, and there is no fear that the amount of fine particles is too small to lower the powder filling rate.
【００１６】さらに、このＳｉＣ粉末にさらにＭｇ、Ａ
ｌまたはＴｉから成る浸透促進材を加えることにしたの
は、これら浸透促進材を加えないと工程の短縮、不良率
の低減が難しくなることによる。これら金属が溶融金属
の浸透を促進するのは、理由は不明であるが、アルミニ
ウム合金のセラミックス粉末に対する濡れ性が改善され
るためと思われる。Further, Mg and A are added to the SiC powder.
The reason why the penetration enhancer made of l or Ti is added is that if these penetration enhancers are not added, it becomes difficult to shorten the process and reduce the defective rate. The reason why these metals promote the penetration of the molten metal is unknown, but it is considered that the wettability of the aluminum alloy to the ceramic powder is improved.
【００１７】そして、その浸透促進材を混合したＳｉＣ
粉末をプレス機で乾式成形してプリフォームを形成す
る。そのプリフォームの粉末充填率を６０ｖｏｌ％以上
としたのは、６０ｖｏｌ％より低いとＡｌ2Ｏ3に近い熱
膨張率の複合材料が得られないことによる。Then, the SiC mixed with the penetration enhancer
The powder is dry-formed with a press to form a preform. The reason why the powder filling rate of the preform is set to 60 vol% or more is that if it is lower than 60 vol%, a composite material having a thermal expansion coefficient close to that of Al 2 O 3 cannot be obtained.
【００１８】その形成したプリフォームに溶融したアル
ミニウム合金を窒素中で非加圧で浸透させれば、高含有
率のセラミックス粉末を含む金属−セラミックス複合材
料が得られる。If a molten aluminum alloy is permeated into the formed preform in a non-pressurized manner in nitrogen, a metal-ceramic composite material containing a high content of ceramic powder can be obtained.
【００１９】[0019]
【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、先ず強化材としてアスペクト比が３以下の粒
子を含み、かつ２μｍ以下の粒子を１０重量％以下含む
ＳｉＣ粉末を用意する。この粉末にＭｇ、ＡｌまたはＴ
ｉから成る浸透促進材を加え、これにさらに慣用の無機
バインダーや有機バインダーを添加して混合する。BEST MODE FOR CARRYING OUT THE INVENTION The production method of the present invention will be described in more detail. First, as a reinforcing material, an SiC powder containing particles having an aspect ratio of 3 or less and containing particles of 2 μm or less and 10% by weight or less is prepared. Mg, Al or T
A permeation enhancer made of i is added, and a conventional inorganic binder or organic binder is further added thereto and mixed.
【００２０】得られた混合粉末を成形用型に充填し、そ
れをプレス機で乾式成形して６０ｖｏｌ％以上の粉末充
填率を有するプリフォームを形成する。その形成したプ
リフォームに溶融したアルミニウム合金を窒素中で非加
圧で浸透させ、それを冷却した後、必要に応じて機械加
工することにより、金属−セラミックス複合材料を作製
する。The obtained mixed powder is filled in a molding die and dry-molded by a press machine to form a preform having a powder filling rate of 60 vol% or more. The molten aluminum alloy is infiltrated into the formed preform in a non-pressurized manner in nitrogen, cooled, and then machined as necessary to produce a metal-ceramic composite material.
【００２１】以上の方法で金属−セラミックス複合材料
を作製すれば、乾式成形でプリフォームを形成しても高
含有率のセラミックス粉末を含む金属−セラミックス複
合材料を作製することができる。If a metal-ceramic composite material is produced by the above method, a metal-ceramic composite material containing a high content of ceramic powder can be produced even if a preform is formed by dry molding.
【００２２】[0022]
【実施例】以下、本発明の実施例を比較例と共に具体的
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.
【００２３】（実施例１、２） （１）複合材料の作製 強化材として実施例１では、表１のアスペクト比を有す
る独ＥＳＫ（ＥＬＥＫＴＲＯＳＣＨＭＥＬＺＷＥＲＫ
ＫＥＭＰＴＥＭ ＧＭＢＨ）社の市販ＳｉＣ粉末（Ｃ＃
７００Ｄ Ｄａｒｋ、平均粒径１７μｍ、２μｍ以下の
粒子５重量％、アスペクト比３）４０重量％と信濃電気
精錬社の市販ＳｉＣ粉末（＃１８０、平均粒径７０μ
ｍ、２μｍ以下の粒子は含まず、アスペクト比５）６０
重量％に、表１に示す浸透促進材を２重量％（外割）加
え、Ｖ型混合機で１５分間混合した。(Examples 1 and 2) (1) Preparation of Composite Material In Example 1, ESK (ELEKTROSCHMELZWERK) having an aspect ratio shown in Table 1 was used as a reinforcing material.
KEMPTEM GMBH) commercial SiC powder (C #
700D Dark, average particle diameter 17 μm, 5% by weight of particles having a particle diameter of 2 μm or less, aspect ratio 3) 40% by weight, and a commercially available SiC powder of Shinano Electric Refining Co., Ltd.
m, not including particles of 2 μm or less, aspect ratio 5) 60
2% by weight (outside weight) of the penetration enhancer shown in Table 1 was added to the weight%, and the mixture was mixed for 15 minutes with a V-type mixer.
【００２４】得られた混合粉末に有機バインダーとして
積水化学社の市販ＰＶＡ（ＢＬ−５）を添加し、Ｖ型混
合機で１５分間混合した後、それを金型に充填して１０
０ｋｇ／ｃｍ2の圧力でプレスして１００×１００×３
０ｍｍのプリフォームを形成した。このプリフォームに
プリフォームの２倍重量のＡｌ８５％−Ｓｉ１０％−Ｍ
ｇ５％合金を組み合わせて電気炉に入れ、これを窒素雰
囲気中で８２５℃の温度で１２時間加熱してアルミニウ
ム合金を浸透させ、冷却して複合材料を作製した。To the obtained mixed powder, PVA (BL-5) commercially available from Sekisui Chemical Co., Ltd. was added as an organic binder, and mixed for 15 minutes with a V-type mixer.
Pressing at a pressure of 0 kg / cm 2 100 × 100 × 3
A 0 mm preform was formed. This preform has Al85% -Si10% -M twice the weight of the preform.
The combined g5% alloy was placed in an electric furnace, which was heated in a nitrogen atmosphere at a temperature of 825 ° C. for 12 hours to infiltrate the aluminum alloy, and cooled to produce a composite material.
【００２５】（２）評価 得られたプリフォームの嵩比重をアルキメデス法で測定
し、プリフォームの粉末充填率を求めた。また、得られ
た複合材料を切断し、その切断面を目視で観察してアル
ミニウム合金の浸透状態を調べた。それらの結果を表１
に示す。(2) Evaluation The bulk specific gravity of the obtained preform was measured by the Archimedes method, and the powder filling rate of the preform was determined. Further, the obtained composite material was cut, and the cut surface was visually observed to check the permeation state of the aluminum alloy. Table 1 shows the results.
Shown in
【００２６】（比較例１〜３）比較例１では、ＳｉＣ粉
末としてアスペクト比が３以下の粒子を含まない信濃電
気精錬社の市販ＳｉＣ粉末（＃１８０、平均粒径７０μ
ｍ、２μ以下の粒子を含まず、アスペクト比５）を全量
用いた他は、比較例２では、Ｍｇ、Ａｌ、Ｔｉ以外の金
属粉末を含んだＳｉＣ粉末を用いた他は、比較例３で
は、独ＥＳＫ社の市販ＳｉＣ粉末（Ｃ＃７００Ｄ Ｄａ
ｒｋ、平均粒径１７μｍ、２μｍ以下の粒子５重量％、
アスペクト比３）の代わりに２μｍ以下の微細粒子をよ
り多く含むＮｏｒｔｏｎ社のＳｉＣ粉末（平均粒径１０
μｍ、２μｍ以下の粒子２８重量％、アスペクト比３）
を用いた他は実施例１と同様に複合材料を作製し、評価
した。(Comparative Examples 1 to 3) In Comparative Example 1, a commercially available SiC powder (# 180, average particle diameter of 70 μm) from Shinano Electric Refining Co., which does not contain particles having an aspect ratio of 3 or less as SiC powder.
Comparative Example 2 did not include particles having a particle size of m, 2 μm or less, and used Comparative Example 3 except that SiC powder containing metal powders other than Mg, Al, and Ti was used in Comparative Example 2 except that the entire amount of aspect ratio 5) was used. , A commercial SiC powder from ESK (C # 700D Da)
rk, 5% by weight of particles having an average particle diameter of 17 μm and 2 μm or less,
Instead of aspect ratio 3), Norton's SiC powder (average particle size 10
μm, 28% by weight of particles of 2 μm or less, aspect ratio 3)
A composite material was prepared and evaluated in the same manner as in Example 1 except that was used.
【００２７】表１から明らかなように、実施例１、２で
は、ＳｉＣ粉末の充填率がいずれも６０ｖｏｌ％以上で
あった。また、アルミニウム合金の浸透状態も未浸透部
分がなく、良好であった。このことは、セラミックス粉
末を適切なセラミックス粉末とすれば、乾式成形でプリ
フォームを形成してもＡｌ2Ｏ3に近い熱膨張率を有する
複合材料を作製することができるということを示してい
る。As is clear from Table 1, in Examples 1 and 2, the filling rate of the SiC powder was 60 vol% or more. In addition, the permeation state of the aluminum alloy was good with no unpermeated portion. This indicates that if the ceramic powder is an appropriate ceramic powder, a composite material having a coefficient of thermal expansion close to that of Al 2 O 3 can be produced even when a preform is formed by dry molding. .
【００２８】これに対して、比較例１では、アスペクト
比が３以下の粒子を含んでいないので、粉末充填率が６
０ｖｏｌ％を大きく下廻っていた。また、比較例２で
は、浸透促進材に本発明の金属を用いていないので、複
合材料中に未浸透部分が認められた。さらに、比較例３
では、２μｍ以下の微細粒子が１０重量％より多すぎた
ので、これも複合材料中に未浸透部分が認められた。On the other hand, Comparative Example 1 does not contain particles having an aspect ratio of 3 or less, so that the powder filling rate is 6%.
It was much less than 0 vol%. In Comparative Example 2, since the metal of the present invention was not used as the penetration enhancer, a non-penetrated portion was observed in the composite material. Further, Comparative Example 3
In this case, since the fine particles having a size of 2 μm or less were more than 10% by weight, an unpermeated portion was also observed in the composite material.
【００２９】[0029]
【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、乾式成形でプリフォー
ムを形成しても高含有率のセラミックス粉末を含む金属
−セラミックス複合材料を作製することができるように
なった。このことにより、乾式成形でプリフォームを形
成してもＡｌ2Ｏ3に近い熱膨張率を有する複合材料を作
製することができるようになったので、この複合材料の
生産性、歩留まりを大きく向上させることができるよう
になった。 整理番号 ＴＫＳ２６４ 化学式等を記載した書面As described above, according to the method for producing a metal-ceramic composite material of the present invention, a metal-ceramic composite material containing a high content of ceramic powder is produced even when a preform is formed by dry molding. Now you can do it. As a result, even when a preform is formed by dry molding, a composite material having a thermal expansion coefficient close to that of Al 2 O 3 can be produced, so that the productivity and yield of this composite material are greatly improved. You can now let. Reference number TKS264 Document describing chemical formula etc.
【表１】 [Table 1]
Claims (3)
も含み、かつ粒径が２μｍ以下の粒子を１０重量％以下
含むＳｉＣ粉末に、Ｍｇ、ＡｌまたはＴｉ粉末から成る
浸透促進材を添加し混合した粉末をプレス機で乾式成形
して６０ｖｏｌ％以上の粉末充填率を有するプリフォー
ムを形成し、その形成したプリフォームに溶融したアル
ミニウム合金を窒素中で非加圧で浸透させることを特徴
とする金属−セラミックス複合材料の製造方法。An SiC powder containing at least particles having an aspect ratio of 3 or less and having a particle size of 2 μm or less and 10% by weight or less is mixed with a penetration enhancer made of Mg, Al or Ti powder. A metal characterized in that a powder is dry-formed with a press machine to form a preform having a powder filling rate of 60 vol% or more, and a molten aluminum alloy is permeated into the formed preform in nitrogen without pressure. A method for producing a ceramic composite material.
が、４０重量％以上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 an amount of particles having an aspect ratio of 3 or less is 40% by weight or more.
〜２重量％であることを特徴とする請求項１または２記
載の金属−セラミックス複合材料の製造方法。3. An amount containing particles having a particle size of 2 μm or less is 5
3. The method for producing a metal-ceramic composite material according to claim 1, wherein the amount is from 2 to 2% by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9712399A JP2000288714A (en) | 1999-04-05 | 1999-04-05 | Production of metal-ceramics composite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9712399A JP2000288714A (en) | 1999-04-05 | 1999-04-05 | Production of metal-ceramics composite material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000288714A true JP2000288714A (en) | 2000-10-17 |
Family
ID=14183799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9712399A Pending JP2000288714A (en) | 1999-04-05 | 1999-04-05 | Production of metal-ceramics composite material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000288714A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005113464A1 (en) * | 2004-05-19 | 2005-12-01 | Ceramtec Ag Innovative Ceramic Engineering | Method for producing metal ceramic composite materials |
| JP2010258458A (en) * | 2010-04-26 | 2010-11-11 | Dowa Holdings Co Ltd | Metal-ceramic composite heat-dissipating plate integrated with ceramic insulating substrate and method of manufacturing the same |
| US9782935B2 (en) | 2015-03-18 | 2017-10-10 | Ricoh Company, Ltd. | Powder material for three-dimensional modeling, kit for three-dimensional modeling, device for manufacturing three-dimensional object, and method of manufacturing three-dimensional object |
| CN109277545A (en) * | 2017-07-21 | 2019-01-29 | 中国科学院金属研究所 | A kind of preparation method of continuous SiC fiber enhancing TiAl based composites blade |
-
1999
- 1999-04-05 JP JP9712399A patent/JP2000288714A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005113464A1 (en) * | 2004-05-19 | 2005-12-01 | Ceramtec Ag Innovative Ceramic Engineering | Method for producing metal ceramic composite materials |
| JP2010258458A (en) * | 2010-04-26 | 2010-11-11 | Dowa Holdings Co Ltd | Metal-ceramic composite heat-dissipating plate integrated with ceramic insulating substrate and method of manufacturing the same |
| US9782935B2 (en) | 2015-03-18 | 2017-10-10 | Ricoh Company, Ltd. | Powder material for three-dimensional modeling, kit for three-dimensional modeling, device for manufacturing three-dimensional object, and method of manufacturing three-dimensional object |
| CN109277545A (en) * | 2017-07-21 | 2019-01-29 | 中国科学院金属研究所 | A kind of preparation method of continuous SiC fiber enhancing TiAl based composites blade |
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