JPH0772101B2 - Method for manufacturing ceramic composite - Google Patents
Method for manufacturing ceramic compositeInfo
- Publication number
- JPH0772101B2 JPH0772101B2 JP62088061A JP8806187A JPH0772101B2 JP H0772101 B2 JPH0772101 B2 JP H0772101B2 JP 62088061 A JP62088061 A JP 62088061A JP 8806187 A JP8806187 A JP 8806187A JP H0772101 B2 JPH0772101 B2 JP H0772101B2
- Authority
- JP
- Japan
- Prior art keywords
- ceramic composite
- fibers
- strength
- ceramics
- main component
- 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 - Fee Related
Links
- 239000000919 ceramic Substances 0.000 title claims description 22
- 239000002131 composite material Substances 0.000 title claims description 11
- 238000004519 manufacturing process Methods 0.000 title claims 4
- 238000000034 method Methods 0.000 title description 6
- 239000000835 fiber Substances 0.000 claims description 15
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 10
- 239000000843 powder Substances 0.000 claims description 5
- 239000010936 titanium Substances 0.000 claims description 5
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 4
- 150000004767 nitrides Chemical class 0.000 claims description 4
- 229910052719 titanium Inorganic materials 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 2
- 229910052726 zirconium Inorganic materials 0.000 claims description 2
- 150000001247 metal acetylides Chemical class 0.000 claims 1
- 239000002994 raw material Substances 0.000 claims 1
- 238000005728 strengthening Methods 0.000 description 8
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229910026551 ZrC Inorganic materials 0.000 description 1
- OTCHGXYCWNXDOA-UHFFFAOYSA-N [C].[Zr] Chemical compound [C].[Zr] OTCHGXYCWNXDOA-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000011268 mixed slurry Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 102200082816 rs34868397 Human genes 0.000 description 1
- VSZWPYCFIRKVQL-UHFFFAOYSA-N selanylidenegallium;selenium Chemical compound [Se].[Se]=[Ga].[Se]=[Ga] VSZWPYCFIRKVQL-UHFFFAOYSA-N 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000000967 suction filtration Methods 0.000 description 1
Landscapes
- Compositions Of Oxide Ceramics (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、アルミナを主成分とし、強度、靱性及び耐摩
耗性に優れたセラミツクス複合体に関する。TECHNICAL FIELD The present invention relates to a ceramic composite containing alumina as a main component and having excellent strength, toughness and wear resistance.
セラミツクス焼結体は現在まで多種多様のものが開発さ
れ、それぞれの特性を利用して広範囲の用途に使用され
ている。しかし、一般的に、これらセラミツクス焼結体
は強度及び靱性に乏しく、信頼性が低いために安定的に
使用できないという問題点が指摘されている。A wide variety of ceramics sintered bodies have been developed so far, and they are used in a wide range of applications by utilizing their respective characteristics. However, it is generally pointed out that these ceramics sintered bodies are poor in strength and toughness and have low reliability, so that they cannot be used stably.
そこで従来から、セラミツクス焼結体の強度等の特性を
改善し、信頼性を向上させる試みが種々提案されてい
る。例えば、硬質粒子等の第２相の分散による強化、ジ
ルコニア等の分散相の相転移を利用した強化、及びセラ
ミツクスフアイバーの添加による強化等を主なものとし
て挙げることができる。Therefore, various attempts have heretofore been proposed to improve the characteristics such as strength of the ceramics sintered body and improve the reliability. For example, strengthening by dispersing a second phase such as hard particles, strengthening by utilizing a phase transition of a dispersed phase such as zirconia, and strengthening by adding a ceramic fiber can be mainly mentioned.
しかしながら、上記の強化法にも夫々欠点があるため、
充分な強度並びに信頼性が得られるに至つていない。即
ち、第２相の分散強化法の場合は第２相が粒状では強化
の効果が小さく、相転移を利用した強化法の場合には高
温域では相転移が起こらないため強化効果が全くなく、
またセラミツクスフアイバー添加の場合、かえつて強度
が低下することが多かつた。However, each of the above strengthening methods has its drawbacks,
Sufficient strength and reliability have not been obtained yet. That is, in the case of the second phase dispersion strengthening method, the strengthening effect is small when the second phase is granular, and in the case of the strengthening method utilizing the phase transition, there is no strengthening effect because the phase transition does not occur in the high temperature range,
In addition, when the ceramic fiber was added, the strength was often lowered.
又、上記の方法で強化したセラミツクス焼結体を切削工
具として用いた場合、耐摩耗性が低いといつた問題点も
指摘されている。Further, it has been pointed out that when the ceramics sintered body reinforced by the above method is used as a cutting tool, the abrasion resistance is low.
本発明は、かかる従来の事情に鑑み、セラミツクス特に
アルミナを主成分とするセラミツクス焼結体の強度及び
靱性を改善し、更に切削工具として重要な耐摩耗性を向
上させたセラミツクス複合体を提供せんとするものであ
る。In view of such conventional circumstances, the present invention does not provide a ceramics composite in which the strength and toughness of the ceramics, in particular, the ceramics sintered body containing alumina as a main component are improved, and further the wear resistance important as a cutting tool is improved. It is what
本発明のセラミツクス複合体はアルミナを主成分とする
焼結体であつて、チタン又はジルコニウムからなる炭化
物、窒化物及び炭窒化物の少なくとも１種の繊維を１〜
50体積％だけ分散して含有することを特徴としている。The ceramic composite of the present invention is a sintered body containing alumina as a main component, and contains at least one fiber of carbide, nitride and carbonitride made of titanium or zirconium.
It is characterized by containing 50% by volume dispersed therein.
このセラミツクス複合体は、アルミナ（Al2O3）粉末
と、チタン（Ti）又はジルコニウム（Zr）の炭化物、窒
化物、若しくは炭窒化物の繊維を１種又は２種以上所定
の組成で水中で混合し、吸引ろ過した後、焼結する方法
により製造される。This ceramic composite is made of alumina (Al 2 O 3 ) powder and one or more fibers of titanium (Ti) or zirconium (Zr) carbide, nitride, or carbonitride in water with a predetermined composition. It is manufactured by a method of mixing, suction filtering, and sintering.
本発明のセラミツクス複合体の主成分であるアルミナは
化学的安定性に優れ、しかも焼結性がよいので、セラミ
ツクスの主成分として最適である。Alumina, which is the main component of the ceramic composite of the present invention, is excellent in chemical stability and has good sinterability, and thus is most suitable as the main component of ceramics.
チタン又はジルコニウムの炭化物、窒化物及び炭窒化物
の繊維は耐摩耗性に優れ、しかも強度が高いことから、
アルミナの有効な強化材と考えられる。これらの繊維の
形態としては、長繊維も単繊維も使用できるが、取り扱
いが容易であつて優れた特性が得られるウイスカーが最
も好ましい。Titanium or zirconium carbide, nitride and carbonitride fibers have excellent wear resistance and high strength,
It is considered to be an effective reinforcing material for alumina. As the form of these fibers, long fibers or single fibers can be used, but whiskers that are easy to handle and have excellent properties are most preferable.
又、これらの繊維の含有量は、１〜50体積％とすべきで
あり、１体積％未満では繊維添加による特性の向上が望
めず、50体積％をこえると焼結体の緻密化が困難とな
り、強度が極度に低下するからである。Further, the content of these fibers should be 1 to 50% by volume. If the content is less than 1% by volume, improvement of the characteristics cannot be expected by adding fibers, and if it exceeds 50% by volume, it is difficult to densify the sintered body. And the strength is extremely reduced.
α‐Al2O3粉末（平均粒径0.5μｍ）に、粒成長抑制のた
めに0.2重量％のMgO粉末を添加し、更に下表に示したセ
ラミツクス繊維を表示する添加量（体積％）だけ水中で
混合した。得られた混合スラリーを目開きが３μｍのろ
紙を用いて減圧吸引ろ過し、Al2O3等の粉末とセラミツ
クス繊維の混合したマツトを形成した。このマツトを乾
燥した後、1650℃で300kg/cm2の真空ホツトプレスによ
り夫々焼結した。0.2% by weight of MgO powder is added to α-Al 2 O 3 powder (average particle size 0.5 μm) to suppress grain growth, and the addition amount (volume%) of ceramic fibers shown in the table below is added. Mix in water. The obtained mixed slurry was subjected to vacuum suction filtration using a filter paper having a mesh size of 3 μm to form a mat in which powders such as Al 2 O 3 and ceramic fibers were mixed. After drying this mat, it was sintered at 1650 ° C. by a vacuum hot press of 300 kg / cm 2 .
得られた各焼結体から試験片を切り出し、密度及び曲げ
強度、並びに切削性能を測定した。切削性能の測定は、
S45C材を被削材とし、切削速度500m/min、送り0.4mm/re
v.及び切り込み2mmで実施し、破損までの切削時間で示
した。得られた各測定結果を下表に併せて表示した。A test piece was cut out from each of the obtained sintered bodies, and the density, bending strength, and cutting performance were measured. The measurement of cutting performance is
S45C material as the work material, cutting speed 500m / min, feed 0.4mm / re
v. and 2mm incision, and the cutting time until breakage is shown. The obtained measurement results are also shown in the table below.
〔発明の効果〕 本発明によれば、強度及び靱性が優れるとともに、耐摩
耗性も高いアルミナ複合体を製造することができる。従
つて、この高強度且つ高靱性で耐摩耗性に優れたアルミ
ナ複合体は、従来のものが強度等の不足のため応用不可
能であつた用途、例えば切削工具や高温構造部材等にも
使用可能であつて、特に切削工具として用いれば極めて
長寿命のものが得られる。 [Effect of the Invention] According to the present invention, an alumina composite having excellent strength and toughness as well as high wear resistance can be produced. Therefore, this alumina composite with high strength, high toughness, and excellent wear resistance is also used in applications where conventional ones could not be applied due to lack of strength, such as cutting tools and high temperature structural members. It is possible, and especially when used as a cutting tool, an extremely long life can be obtained.
Claims (2)
ニウムの炭化物、窒化物及び炭窒化物の少なくとも１種
からなるセラミツクス繊維を分散したセラミツクス複合
体の製造方法において、アルミナを主成分とする原料粉
末と、１〜50体積％の前記セラミツクス繊維を水中で混
合し、吸引ろ過した後、焼結することを特徴とする前記
セラミツクス複合体の製造方法。1. A raw material powder containing alumina as a main component in a method for producing a ceramics composite containing alumina as a main component, and a ceramics fiber containing at least one of carbides, nitrides and carbonitrides of titanium or zirconium dispersed therein. And 1 to 50% by volume of the ceramic fibers are mixed in water, suction-filtered, and then sintered, and the method for producing a ceramic composite.
する、特許請求の範囲（１）項記載のセラミツクス複合
体の製造方法。2. The method for producing a ceramic composite according to claim 1, wherein the fibers are whiskers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62088061A JPH0772101B2 (en) | 1987-04-10 | 1987-04-10 | Method for manufacturing ceramic composite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62088061A JPH0772101B2 (en) | 1987-04-10 | 1987-04-10 | Method for manufacturing ceramic composite |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63252960A JPS63252960A (en) | 1988-10-20 |
| JPH0772101B2 true JPH0772101B2 (en) | 1995-08-02 |
Family
ID=13932334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62088061A Expired - Fee Related JPH0772101B2 (en) | 1987-04-10 | 1987-04-10 | Method for manufacturing ceramic composite |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0772101B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02133369A (en) * | 1988-11-11 | 1990-05-22 | Mitsubishi Metal Corp | Ceramic cutting tool containing whisker having excellent wear resistance |
| US5231060A (en) * | 1989-10-17 | 1993-07-27 | Sandvik Ab | Whisker-reinforced ceramic cutting tool material |
| SE465319B (en) * | 1989-10-17 | 1991-08-26 | Sandvik Ab | A1203-BASED CUT FOR PRESCRIPTION OF STEEL PROCESSING |
| JPH05279138A (en) * | 1992-03-31 | 1993-10-26 | Kyocera Corp | Fiber-reinforced ceramics and manufacturing method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH085720B2 (en) * | 1987-01-27 | 1996-01-24 | 東芝タンガロイ株式会社 | Whisker-reinforced composite sintered body |
-
1987
- 1987-04-10 JP JP62088061A patent/JPH0772101B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63252960A (en) | 1988-10-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |