JPH0657860B2 - Method for manufacturing Al2O3-Al-Si composite material - Google Patents
Method for manufacturing Al2O3-Al-Si composite materialInfo
- Publication number
- JPH0657860B2 JPH0657860B2 JP60106935A JP10693585A JPH0657860B2 JP H0657860 B2 JPH0657860 B2 JP H0657860B2 JP 60106935 A JP60106935 A JP 60106935A JP 10693585 A JP10693585 A JP 10693585A JP H0657860 B2 JPH0657860 B2 JP H0657860B2
- Authority
- JP
- Japan
- Prior art keywords
- composite material
- manufacturing
- molded body
- melt
- shutter
- 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.)
- Expired - Lifetime
Links
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- Compositions Of Oxide Ceramics (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 この発明は、Ａl2Ｏ３−Ａｌ−Ｓｉ系複合材の製造方法
に関する。TECHNICAL FIELD The present invention relates to a method for producing an Al 2 O 3 —Al—Si-based composite material.
従来の技術 アルミナ系セラミック材料は硬さ、機械的強度、耐熱
性、化学的安定性等に優れており、またＳｉＣやＳｉ３
ＮＨ４のセラミック材料と比較しても耐熱性が劣ってお
らず、しかも安価に得られることから、工業用セラミッ
ク材料として広く用いられている。2. Description of the Related Art Alumina-based ceramic materials are excellent in hardness, mechanical strength, heat resistance, chemical stability, etc., and also SiC and Si 3
It is widely used as an industrial ceramic material because it is not inferior in heat resistance to NH 4 ceramic materials and can be obtained at low cost.
従来、アルミナ系セラミック製品は、単結晶ファイバー
を除き、粉体を所定形状に成形したのちに焼成するか、
あるいは成形と焼成を同時に行うことによって製造して
いた。Conventionally, alumina-based ceramic products, except for the single crystal fiber, after molding the powder into a predetermined shape, or firing,
Alternatively, it is manufactured by simultaneously performing molding and firing.
従来のアルミナ系セラミック材料は、単純形状をした粒
状体がマトリックスを構成している。In the conventional alumina-based ceramic material, simple-shaped particles form a matrix.
発明が解決しようとする課題 従来のアルミナ系セラミック材料には次のような欠点が
あった。Problems to be Solved by the Invention Conventional alumina-based ceramic materials have the following drawbacks.
（１）硬いため加工性が劣る。(1) Workability is poor because it is hard.
（２）脆性の強い材料であるため衝撃に弱い。一般的に
いって、セラミック材料は破壊靱性値が金属に比べ大巾
に劣っている。(2) Since it is a brittle material, it is weak against impact. Generally speaking, the fracture toughness value of ceramic materials is far inferior to that of metals.
（３）複雑形状の製品を精密に成形加工するのが困難で
ある。(3) It is difficult to precisely mold a product having a complicated shape.
（４）焼成温度が１５００〜１９００℃と高い。(4) The firing temperature is as high as 1500 to 1900 ° C.
（５）焼成収縮が大きい。(5) Firing shrinkage is large.
（６）耐熱衝撃性が小さい。(6) Small thermal shock resistance.
（７）金属に比べて潤滑性が劣っている。(7) The lubricity is inferior to that of metal.
このような欠点があるため、アルミナ系セラミック製品
は、多くの優れた基本的特性を有しながら、強度特性と
か機械的な信頼性が厳しく要求される構造材としては使
用が困難であった。Due to these drawbacks, alumina-based ceramic products have been difficult to use as structural materials that have many excellent basic properties, but are strictly required to have strength properties and mechanical reliability.
この発明は、前述のような従来技術の欠点を解消して、
強度特性や機械的な信頼性を低下させずに、しかも安価
に製造できるＡl2Ｏ３−Ａｌ−Ｓｉ系複合材の製造方法
を提供することを目的としている。The present invention solves the above-mentioned drawbacks of the prior art,
Without reducing the strength properties and mechanical reliability, yet it is an object to provide a method of manufacturing Al 2 O 3 -Al-Si-based composite material can be manufactured at low cost.
課題を解決するための手段 このような目的を達成するために、この発明は、ＳｉＯ
２を主成分とするガラス質ファイバーからなるプリフォ
ーム成形体を高純度のＡｌ融液中に浸漬して、ＡｌとＳ
ｉＯ２を反応させるＡl2Ｏ３−Ａｌ−Ｓｉ系複合材の製
造方法を要旨としている。Means for Solving the Problems In order to achieve such an object, the present invention provides SiO.
A preform molded body made of glassy fiber containing 2 as a main component is dipped in a high-purity Al melt to form Al and S
The gist is a method for producing an Al 2 O 3 —Al—Si-based composite material in which iO 2 is reacted.
なお、この明細書では「Ａl2Ｏ３−Ａｌ−Ｓｉ系」とい
う表現は最も広義に使用しており、Ａl2Ｏ３、Ａｌおよ
びＳｉが主成分であることを意味し、主成分以外の未反
応のＳｉＯ２を含むこともありうるものであり、すべて
本発明の範囲に入る。In this specification, the expression "Al 2 O 3 -Al-Si system" is used in the broadest sense, meaning that Al 2 O 3 , Al and Si are the main components, and that other than the main component is used. It is possible that unreacted SiO 2 is included, and all of them fall within the scope of the present invention.
実施例 この発明による複合材の製造方法について述べる。Example A method for manufacturing a composite material according to the present invention will be described.
まず、ＳｉＯ２を主成分とするガラス質ファイバーを所
望の形状に成形して、プリフォーム成形体をつくる。必
要に応じて所望の形状に加工する。そして、そのような
プリフォーム成形体を減圧下または不活性雰囲気下で高
純度のＡｌ融液中に浸漬し、 ４Ａｌ＋３ＳｉＯ２→２Ａl2Ｏ３＋３Ｓｉの式に従って
ＡｌとＳｉＯ２を反応させ、プリフォーム成形体中のＳ
ｉＯ２をＡl2Ｏ３に置換する。その結果、複合体ができ
る。First, a glass fiber having SiO 2 as a main component is molded into a desired shape to form a preform molded body. If necessary, it is processed into a desired shape. Then, such a preform molded body is dipped in a high-purity Al melt under reduced pressure or in an inert atmosphere, and Al and SiO 2 are reacted according to the formula of 4Al + 3SiO 2 → 2Al 2 O 3 + 3Si to form a preform. S in the molded body
Replace iO 2 with Al 2 O 3 . The result is a complex.
その後、Ａｌ融液から複合体を取り出し、さらに、Ａｌ
融液の温度よりも３０〜２００℃高い温度（たとえば７
８０〜９５０℃）で減圧中に加熱処理する。それによ
り、複合体に付着している過剰のＡｌ融液を揮発させる
とともに、未反応のＳｉＯ２をＡｌと反応させる。しか
も、複合体中に残留している歪みを除去する。After that, the composite is taken out from the Al melt and
A temperature 30 to 200 ° C. higher than the temperature of the melt (for example, 7
(80 to 950 ° C.) and heat treatment under reduced pressure. Thereby, the excess Al melt adhering to the composite is volatilized, and unreacted SiO 2 is reacted with Al. Moreover, the strain remaining in the composite is removed.
以上の製法で得られたＡl2Ｏ３−Ａｌ−Ｓｉ系複合材の
組成は、プリフォーム成形体のＡｌ融液での浸漬時間を
変化させることによって調節することができる。たとえ
ば、浸漬時間が経過するとともにＡｌにって還元生成し
たＳｉがＡｌ溶融液に溶けるので、浸漬時間が長くなる
と、それだけＳｉの含有量が減少するのである。The composition of the Al 2 O 3 —Al—Si-based composite material obtained by the above manufacturing method can be adjusted by changing the immersion time of the preform molded body in the Al melt. For example, as the immersion time elapses, Si that is reduced and produced by Al dissolves in the Al melt, so that the longer the immersion time, the more the Si content decreases.
実施例１ 第１図はこの発明によるＡl2Ｏ３−Ａｌ−Ｓｉ系の複合
材を製造するための反応炉の一例の概略を示している。Example 1 FIG. 1 schematically shows an example of a reaction furnace for producing an Al 2 O 3 —Al—Si-based composite material according to the present invention.
石英ガラス製の反応容器１は上部が開放されていて、下
方部が閉じられている。その内部には高純度カーボン製
のルツボ２が配置してある。反応容器１の上部にはシャ
ッター３が設けてある。シャッター３の上部には出入れ
部分４が設けてある。出入れ部分４の側部には別のシャ
ッター５が設けてある。出入れ部分４とシャッター３を
貫通して線状の保持器６が垂直に配装できるようになっ
ている。保持器６の上部は上下駆動機構１３に連結され
ていて、昇降可能になっている。保持器６の下方部はプ
リフォーム成形体７を保持するようになっている。The reaction vessel 1 made of quartz glass has an open upper part and a closed lower part. A crucible 2 made of high-purity carbon is arranged inside thereof. A shutter 3 is provided above the reaction container 1. An entrance / exit portion 4 is provided above the shutter 3. Another shutter 5 is provided on the side of the entrance / exit portion 4. A linear retainer 6 can be vertically installed so as to pass through the loading / unloading portion 4 and the shutter 3. The upper part of the retainer 6 is connected to the vertical drive mechanism 13 and can be moved up and down. The lower part of the holder 6 holds the preform molded body 7.
また、反応容器１の上方側部には排気口８が形成してあ
って、真空ポンプ９に接続してある。An exhaust port 8 is formed on the upper side of the reaction container 1 and is connected to a vacuum pump 9.
さらに、反応容器１の外側にはヒータ１０が螺旋状に配
置してある。ヒータ１０は、ルツボ２付近に比較して、
そこよりも上方のところで密に配装して、ルツボ２の上
方でより高温に加熱しうるようになっている。その高温
加熱領域に高純度カーボン製のパイプ１１が配置してあ
る。Further, a heater 10 is spirally arranged outside the reaction container 1. The heater 10 is, compared to the vicinity of the crucible 2,
They are densely arranged above the crucible 2 and can be heated to a higher temperature above the crucible 2. A high purity carbon pipe 11 is arranged in the high temperature heating region.
符号１２はルツボ２に収容されている純度９９．９％の
Ａｌ融液を示している。Reference numeral 12 indicates an Al melt having a purity of 99.9% contained in the crucible 2.
なお、ルツボ２やパイプ１１を支持するための手段は図
の簡略をはかるため図示を省略している。The means for supporting the crucible 2 and the pipe 11 are not shown for the sake of simplicity.
製造にあたっては、まず円筒状のプリフォーム成形体７
をつくる。すなわち、ＳｉＯ２を主成分とするガラス質
ファイバー（たとえば石英ガラス製のファイバー束）に
よって円筒状のプリフォーム成形体７をつくる。そのあ
と、シャッター５を開けて、そのプリフォーム成形体７
を保持器６の下端を取りつけ、しかるのちシャッター５
を閉じる。つぎはシャッター３を開けて、保持器６の下
端を下降させることにより、そのようなプリフォーム成
形体７を１０〜１５Ｔｏｒｒの減圧下又は不活性雰囲気
下で純度９９．９％のＡｌ融液１２中に２０分だけ７５
０℃で浸漬し、 ４Ａｌ＋３ＳｉＯ２→２Ａl2Ｏ３＋３Ｓｉの式にしたが
ってＡｌとＳｉＯ２を反応させ、プリフォーム成形体７
中のＳｉＯ２をＡl2Ｏ３に置換し、Ａｌをマトリックス
とした複合体を得る。In manufacturing, first the cylindrical preform molded body 7
To make. That is, a cylindrical preform molded body 7 is made of glassy fibers containing SiO 2 as a main component (for example, a fiber bundle made of quartz glass). After that, the shutter 5 is opened and the preform molded body 7 is
Attach the lower end of the cage 6 and then the shutter 5
Close. Next, the shutter 3 is opened, and the lower end of the holder 6 is lowered, so that such a preform molded body 7 is subjected to a pressure reduction of 10 to 15 Torr or an inert atmosphere and an Al melt 12 having a purity of 99.9%. Only 20 minutes in 75
Immerse at 0 ° C., react Al with SiO 2 according to the formula of 4Al + 3SiO 2 → 2Al 2 O 3 + 3Si, and form preform molded body 7
Al 2 O 3 is substituted for SiO 2 therein to obtain a composite having Al as a matrix.
そのあと、保持器６の下端をさらに上昇させることによ
り複合体を出入れ部分４まで上昇させ、シャッター３を
閉じる。そのあと、シャッター５を開け、複合体を保持
器６から除去する。After that, the lower end of the cage 6 is further raised to raise the composite body to the entrance / exit portion 4, and the shutter 3 is closed. Then, the shutter 5 is opened and the composite is removed from the holder 6.
実施例２ プリフォーム成形体７をローラによってプレート状に加
圧成形してつくり、そのあとは実施例１と同様にして処
理する。Example 2 A preform molded body 7 is pressure-molded into a plate shape with a roller, and thereafter, the same processing as in Example 1 is performed.
発明の効果 本発明の方法により製造したＡl2Ｏ３−Ａｌ−Ｓｉ系の
複合材は、機械的強度、耐摩耗性が高いとともに、従来
のセラミック材料に比較して靱性や潤滑性を大巾に向上
させることができる。したがって、製品の大型化をはか
っても、割れの心配がなくなった。EFFECTS OF THE INVENTION The Al 2 O 3 —Al—Si-based composite material produced by the method of the present invention has high mechanical strength and wear resistance, and has a toughness and lubricity far greater than those of conventional ceramic materials. Can be improved. Therefore, there is no fear of cracking even if the product is enlarged.
また、金属と比較すると、この発明の方法により製造し
たＡl2Ｏ３−Ａｌ−Ｓｉ系複合材の比重は大巾に小さ
い。Moreover, the specific gravity of the Al 2 O 3 -Al-Si composite material produced by the method of the present invention is much smaller than that of metal.
第１図は本発明方法を実施するための反応炉の一例を示
す概略説明図である。 １…反応容器 ２…ルツボ ３、５…シャッター ４…出入れ部分 ７…プリフォーム成形体 １２…Ａｌ融液FIG. 1 is a schematic explanatory view showing an example of a reaction furnace for carrying out the method of the present invention. DESCRIPTION OF SYMBOLS 1 ... Reaction container 2 ... Crucible 3, 5 ... Shutter 4 ... Entry / exit part 7 ... Preform molded body 12 ... Al melt
Claims (1)
ーからなるプリフォーム成形体を高純度のＡｌ融液中に
浸漬して、ＡｌとＳｉＯ２を反応させるＡl2Ｏ３−Ａｌ
−Ｓｉ系複合材の製造方法。1. An Al 2 O 3 -Al for reacting Al and SiO 2 by immersing a preform molding made of glassy fiber containing SiO 2 as a main component in a high-purity Al melt.
-The manufacturing method of Si type composite material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60106935A JPH0657860B2 (en) | 1985-05-21 | 1985-05-21 | Method for manufacturing Al2O3-Al-Si composite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60106935A JPH0657860B2 (en) | 1985-05-21 | 1985-05-21 | Method for manufacturing Al2O3-Al-Si composite material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61266531A JPS61266531A (en) | 1986-11-26 |
| JPH0657860B2 true JPH0657860B2 (en) | 1994-08-03 |
Family
ID=14446250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60106935A Expired - Lifetime JPH0657860B2 (en) | 1985-05-21 | 1985-05-21 | Method for manufacturing Al2O3-Al-Si composite material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0657860B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012161461A2 (en) * | 2011-05-20 | 2012-11-29 | 한국생산기술연구원 | Aluminium alloy and manufacturing method for same |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0657859B2 (en) * | 1985-05-21 | 1994-08-03 | 東芝セラミツクス株式会社 | Al2O3-Al-Si composite material |
| JP2014005486A (en) * | 2012-06-22 | 2014-01-16 | Aisin Seiki Co Ltd | Method for producing aluminum composite material |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54155914A (en) * | 1978-05-26 | 1979-12-08 | Hepworth & Grandage Ltd | Composite material production |
| JPS579851A (en) * | 1980-06-18 | 1982-01-19 | Sumitomo Electric Ind Ltd | Wear-resistant aluminum composite material |
-
1985
- 1985-05-21 JP JP60106935A patent/JPH0657860B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54155914A (en) * | 1978-05-26 | 1979-12-08 | Hepworth & Grandage Ltd | Composite material production |
| JPS579851A (en) * | 1980-06-18 | 1982-01-19 | Sumitomo Electric Ind Ltd | Wear-resistant aluminum composite material |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012161461A2 (en) * | 2011-05-20 | 2012-11-29 | 한국생산기술연구원 | Aluminium alloy and manufacturing method for same |
| WO2012161461A3 (en) * | 2011-05-20 | 2013-01-17 | 한국생산기술연구원 | Aluminium alloy and manufacturing method for same |
| US9657377B2 (en) | 2011-05-20 | 2017-05-23 | Korea Institute Of Industrial Technology | Aluminum alloy and production method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61266531A (en) | 1986-11-26 |
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