JPS6274035A - Production of ceramic whisker preform for frm - Google Patents

Production of ceramic whisker preform for frm

Info

Publication number
JPS6274035A
JPS6274035A JP21206185A JP21206185A JPS6274035A JP S6274035 A JPS6274035 A JP S6274035A JP 21206185 A JP21206185 A JP 21206185A JP 21206185 A JP21206185 A JP 21206185A JP S6274035 A JPS6274035 A JP S6274035A
Authority
JP
Japan
Prior art keywords
whiskers
frm
molded body
preform
value
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
Application number
JP21206185A
Other languages
Japanese (ja)
Inventor
Nozomi Kawasetsu
望 川節
Hideo Tsunoda
英雄 角田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP21206185A priority Critical patent/JPS6274035A/en
Publication of JPS6274035A publication Critical patent/JPS6274035A/en
Pending legal-status Critical Current

Links

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  • Powder Metallurgy (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)

Abstract

PURPOSE:To obtain a preform of a complex shape with reduced unevenness in the volume content of fibers (Vf value) by mixing ceramic whiskers with an org. binder and metallic powder so as to provide fluidity to the whiskers and to regulate the Vf value, molding the mixture and degreasing the molded body. CONSTITUTION:Ceramic whiskers such a silicon carbide whiskers are mixed with an org. binder such as paraffin wax and metallic powder such as Al powder so as to provide fluidity to the whiskers and to regulate the Vf value. The mixture is injection-molded and the molded body is heated to 400 deg.C degreasing temp. at 5 deg.C/hr heating rate. The molded body is degreased by heating to form prescribed voids.

Description

【発明の詳細な説明】 (産業上の利用分野〕 本発明はマトリックスとなる住属材料を耐浸あるいは含
浸してFRM (繊維強化金属)を製造する際に、強化
用繊維質骨格として用いるセラミックスウィスカプリフ
ォーム、とくに予め定められた所望のvf 値(繊維体
積含有量)ならびに複雑形状のセラミックスウィスカプ
リフォームを量産的に製造する方法に関する。
Detailed Description of the Invention (Industrial Field of Application) The present invention relates to ceramic whiskers used as a reinforcing fibrous skeleton when manufacturing FRM (fiber reinforced metal) by impregnating or impregnating a matrix material. The present invention relates to a method for mass-producing a preform, particularly a ceramic whisker preform having a predetermined desired vf value (fiber volume content) and a complex shape.

(従来の技術) 従来FRM用セラミックスウィスカプリフォームの製造
はセラミックスウィスカを、水ま九は有機溶媒に分散さ
せ濾過成形する方法や、金型を利用した加圧成形等が用
いられている。
(Prior Art) Conventionally, ceramic whisker preforms for FRM have been manufactured by methods such as dispersing ceramic whiskers in an organic solvent and filtration molding, or pressure molding using a mold.

〔発明が解決しようとする間辿点〕[The point where the invention attempts to solve the problem]

上記方法では成形したプリフォームのvfIIi。 vfIIi of the molded preform in the above method.

がばらつ′きやすいという点が問題となる。特に複雑形
状のプリフォームを成形する場合にはその傾向が著しく
プリフォーム成形は困難である。
The problem is that it tends to vary. In particular, when molding a preform with a complicated shape, this tendency is remarkable and the preform molding is difficult.

また量産性も期待できない。Also, mass production cannot be expected.

(問題点を解決するための手段〕 本発明は前述し九問題点を解決するために、セラミック
スウィスカに流動性會与えるための有機バインダとVf
値を調整するためのマ) IJラックス属粉末を混合し
て、射出成形によp成形体を形成しその後脱脂を行いF
RM用セラミックスウィスカプリフォームを得る手段で
ある。
(Means for Solving the Problems) In order to solve the above-mentioned nine problems, the present invention provides an organic binder and Vf for providing fluidity to ceramic whiskers.
To adjust the value, mix the IJ Lux powder, form a P molded body by injection molding, then degrease it and F
This is a means of obtaining a ceramic whisker preform for RM.

(作用) 有機物バインダとしてはポリマ糸ワックス又は、パラフ
ィン系ワックス等がめる。有機物バインダは40〜50
 VOL%が望ましい。40VOL%以下になると流動
性が悪く、射出成形が困難で強化繊維が損傷しやすい。
(Function) As the organic binder, polymer thread wax, paraffin wax, etc. are used. Organic binder is 40-50
VOL% is desirable. When it is less than 40 VOL%, fluidity is poor, injection molding is difficult, and reinforcing fibers are easily damaged.

50 VOL%以上になると脱脂時に変形を生じる。If it exceeds 50 VOL%, deformation occurs during degreasing.

セラミックスウィスカとしてハS10ウィスカ、81s
−ウィスカ、ム40m ウィスカ等がある。
As a ceramic whisker, S10 whisker, 81s
- Whiskers, mu 40m There are whiskers, etc.

SiCウィスカは直径が0.2〜α5μm、長さが10
0〜200μmのβ型単結晶で、5isN、  ウィス
カは直径が0.2〜0.5μm、長さが50〜300μ
mである。繊維含有蓋に、FRM化したときの各種材料
特性を考慮して、5 vow %〜50 vow憾程度
が望ましい。
SiC whiskers have a diameter of 0.2 to α5 μm and a length of 10
Beta type single crystal of 0~200μm, 5isN, whisker diameter 0.2~0.5μm, length 50~300μm
It is m. The fiber-containing lid preferably has a content of about 5 vo % to 50 vo % in consideration of various material properties when FRM is formed.

FRMは、Vf 値が5%以下では硬さ等の各種強度の
向上が低く繊維強化の効果が顕著でない。またVf値が
50%以上になると伸び、絞p等の延性が著しく低下す
る。
In FRM, when the Vf value is 5% or less, improvements in various strengths such as hardness are low and the effect of fiber reinforcement is not significant. Further, when the Vf value exceeds 50%, elongation and ductility such as reduction of area P are significantly reduced.

先に述べたように有機物バインダ配付tは、40〜50
 vow%が望ましいため繊維体積含有1tVf[は、
マトリックス金属となる材料の粉末を同時に混合し調整
する。この金属粉末は粒径が10μm以下の微粉末が7
ましい。特に粒径1μm以下の超微粉は流動性が良好で
射出成形が容易である。10μm以上の粗粉末は流動性
が悪く成形が困難である。射出圧力は100〜’ 2”
!9/cm” 、射出m度Fit OO−120℃が好
ましい。
As mentioned earlier, the organic binder distribution t is 40 to 50
Since vow% is desirable, the fiber volume content 1tVf [is,
Mix and adjust the powder of the material that will become the matrix metal at the same time. This metal powder is a fine powder with a particle size of 10 μm or less.
Delicious. In particular, ultrafine powder with a particle size of 1 μm or less has good fluidity and is easy to injection mold. Coarse powder of 10 μm or more has poor fluidity and is difficult to mold. Injection pressure is 100~'2"
! 9/cm", injection m degree Fit OO-120°C is preferred.

(実施例〕 炭化けい素(SiC)ウィスカを30 vo1%、パラ
フィン系ワックスをa o vo1%、9j=’)の5
0 vow%を金属粉末(本実施例では、アルミニウム
粉末を用いた)とし、これらを混合して射出圧力100
 kl/cm”、 ttlfj温y 1 [10℃テ射
出成形し成形体を得た。これを脱脂温度+100℃、脱
脂昇温速度5℃/Hで脱脂後、走査電子顕微fi(SE
M、lで観察した。
(Example) Silicon carbide (SiC) whiskers 30 vol 1%, paraffin wax a o vo 1%, 9j=') 5
0 vow% as metal powder (in this example, aluminum powder was used), these were mixed and the injection pressure was 100
kl/cm", ttlfj temperature y 1 [10°C] to obtain a molded product. After degreasing at a degreasing temperature +100°C and a degreasing temperature increase rate of 5°C/H, scanning electron microscopy (SE
Observed with M and l.

その結果、繊維は長さが100μm前後と少し短かくは
なっていたが、FILM用強化繊維としては十分使用し
得る状態であった。
As a result, the length of the fiber was a little short, around 100 μm, but it was in a state where it could be used sufficiently as a reinforcing fiber for FILM.

尚、成形体の形状は高さ5−1長径60IIllllの
円柱でおる。
The shape of the molded body is a cylinder with a height of 5-1 and a major axis of 60IIllll.

同様に窒化けい素(atsN4)ウィスカプリフォーム
も上記製造条件で製造し良好な結果が得られた。
Similarly, a silicon nitride (atsN4) whisker preform was manufactured under the above manufacturing conditions and good results were obtained.

(発明の効果〕 本発明によるlIIRM用セラミックスウィスカプリフ
ォームの製造法?用いると以下の効果が期待できる。
(Effects of the Invention) By using the method for manufacturing a ceramic whisker preform for IIRM according to the present invention, the following effects can be expected.

■有機物バインダで流動性を与えているため複雑形状の
成形体(プリフォーム〕でもVf Iffのばらつきが
少ない。
- Fluidity is provided by an organic binder, so there is little variation in Vf Iff even in complex-shaped molded products (preforms).

■成形用金型を変更するだけで複雑形状のプリフォーム
が連続的に製造できる。
■ Preforms with complex shapes can be manufactured continuously by simply changing the mold.

復代理人  内 1)  明 復代理人  萩 原 亮 − 復代理人  安 西 篤 夫Sub-agent: 1) Akira Sub-agent Ryo Hagi Hara - Sub-agent Atsuo Yasunishi

Claims (1)

【特許請求の範囲】[Claims] セラミックスウィスカに有機物バインダおよび金属粉末
を混合しこれを射出成形した後、この成形体を脱脂する
ことを特徴とする所定の空隙をもつFRM用セラミック
スウィスカプリフォームの製造方法。
A method for producing a ceramic whisker preform for FRM having predetermined voids, which comprises mixing ceramic whiskers with an organic binder and metal powder, injection molding the mixture, and then degreasing the molded body.
JP21206185A 1985-09-27 1985-09-27 Production of ceramic whisker preform for frm Pending JPS6274035A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21206185A JPS6274035A (en) 1985-09-27 1985-09-27 Production of ceramic whisker preform for frm

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21206185A JPS6274035A (en) 1985-09-27 1985-09-27 Production of ceramic whisker preform for frm

Publications (1)

Publication Number Publication Date
JPS6274035A true JPS6274035A (en) 1987-04-04

Family

ID=16616216

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21206185A Pending JPS6274035A (en) 1985-09-27 1985-09-27 Production of ceramic whisker preform for frm

Country Status (1)

Country Link
JP (1) JPS6274035A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03174373A (en) * 1989-11-30 1991-07-29 Tokai Carbon Co Ltd Production of whisker preform
KR100383102B1 (en) * 2000-12-22 2003-05-12 주식회사 포스코 Slip of silicon carbide-water system and a method for manufacturing the same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03174373A (en) * 1989-11-30 1991-07-29 Tokai Carbon Co Ltd Production of whisker preform
KR100383102B1 (en) * 2000-12-22 2003-05-12 주식회사 포스코 Slip of silicon carbide-water system and a method for manufacturing the same

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