JP2575440B2 - Ceramics composite material and method for producing the same - Google Patents
Ceramics composite material and method for producing the sameInfo
- Publication number
- JP2575440B2 JP2575440B2 JP63009289A JP928988A JP2575440B2 JP 2575440 B2 JP2575440 B2 JP 2575440B2 JP 63009289 A JP63009289 A JP 63009289A JP 928988 A JP928988 A JP 928988A JP 2575440 B2 JP2575440 B2 JP 2575440B2
- Authority
- JP
- Japan
- Prior art keywords
- composite material
- matrix
- volume
- added
- alumina
- 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
- 239000002131 composite material Substances 0.000 title claims description 8
- 239000000919 ceramic Substances 0.000 title claims description 7
- 238000004519 manufacturing process Methods 0.000 title claims description 4
- 239000011159 matrix material Substances 0.000 claims description 11
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 9
- 238000005452 bending Methods 0.000 description 6
- 238000003754 machining Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 229910007948 ZrB2 Inorganic materials 0.000 description 1
- VWZIXVXBCBBRGP-UHFFFAOYSA-N boron;zirconium Chemical compound B#[Zr]#B VWZIXVXBCBBRGP-UHFFFAOYSA-N 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000011208 reinforced composite material Substances 0.000 description 1
Landscapes
- Ceramic Products (AREA)
- 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SiCウィスカー強化複合材料及びその製造方
法に係る。The present invention relates to a SiC whisker reinforced composite material and a method for producing the same.
［従来の技術及び発明が解決しようとする問題点］ アルミナにSiCウィスカーを添加すると強度及び靭性
が向上する他に、比抵抗も若干小さくなることが知られ
ているが、比抵抗は放電加工が可能になるほど十分に小
さくならない。従って放電加工を可能とするためにSiC
ウィスカーに加えてTiB2が添加されている。しかしなが
らTiB2を添加した場合には曲ば強さがかなり低下すると
いう問題がある。[Problems to be Solved by Conventional Techniques and Inventions] It is known that adding SiC whiskers to alumina not only improves strength and toughness but also slightly reduces specific resistance. It is not small enough to be possible. Therefore, in order to enable electric discharge machining, SiC
TiB 2 is added in addition to the whiskers. However, when TiB 2 is added, there is a problem that the bending strength is considerably reduced.
［問題点を解決するための手段］ 本発明の目的は、放電加工が容易であり、且つ曲げ強
さが大きいセラミックス複合材料を提供することにあ
る。[Means for Solving the Problems] An object of the present invention is to provide a ceramic composite material which is easy to discharge and has a large bending strength.
本発明の前記目的はSiCウィスカーとZrB2とが混入さ
れていると共に、アルミナを主成分とすることを特徴と
するセラミックス複合材料及びアルミナに直径が0.5〜1
0ミクロンのZrB2を20〜50Vol％添加したマトリックス
に、直径が0.5〜2.5ミクロンであり、長さが10〜80ミク
ロンのSiCウィスカーを前記マトリックスの体積に対し
て10〜40Vol％添加し、該SiCウィスカーの添加されたマ
トリックスを焼成することを特徴とするセラミツクス複
合材料の製造方法によって達成される。The object of the present invention is to mix a SiC whisker and ZrB 2 and to have a ceramic composite material and alumina having a diameter of 0.5 to 1
To a matrix to which 20 to 50% by volume of 0 micron ZrB2 is added, SiC whiskers having a diameter of 0.5 to 2.5 microns and a length of 10 to 80 microns are added by 10 to 40% by volume based on the volume of the matrix. This is achieved by a method for producing a ceramics composite material, which comprises firing a matrix to which SiC whiskers are added.
［作用］ アルミナに直径が0.5〜10ミクロンのZrB2が添加され
たマトリックスと直径が0.5〜2.5ミクロン、長さが10〜
80ミクロンのSiCウィスカーとからなる粉末を、予めポ
ットミル等で十分解砕した後、湿式混合する。このスラ
リーを乾燥、造粒後ホットプレス等により焼結する。こ
の場合、アルミナの体積に対するZrB2の体積率が20％未
満では比抵抗が十分には低下せず、又50％以上ではSiC
ウィスカー添加による強度の向上効果がほとんど生じな
くなる。このZrB2の体積率を20％〜50％とすれば比抵抗
が十分低下すると共に曲げ強さの低下が少なく、且つ破
壊靭性KICも向上する。SiCウィスカーのマトリックスの
体積に対する体積率が10％未満では曲げ強さの向上が十
分でなく、又40％以上では却って曲げ強さが低下する。[Operation] matrix and diameter ZrB 2 was added in diameter alumina 0.5 to 10 microns 0.5-2.5 microns, is 10 length
The powder composed of 80 micron SiC whiskers is sufficiently crushed in advance with a pot mill or the like, and then wet-mixed. After drying and granulating the slurry, the slurry is sintered by hot pressing or the like. In this case, if the volume ratio of ZrB 2 with respect to the volume of alumina is less than 20%, the specific resistance is not sufficiently lowered, and if the volume ratio is 50% or more, SiC
The whisker addition hardly improves the strength. When the volume ratio of ZrB 2 is set to 20% to 50%, the specific resistance is sufficiently reduced, the bending strength is hardly reduced, and the fracture toughness K IC is also improved. If the volume ratio of the SiC whiskers to the volume of the matrix is less than 10%, the bending strength is not sufficiently improved, and if it is 40% or more, the bending strength is rather lowered.
［実施例］ マトリックスがアルミナである場合、ZrB2が体積率で
25％添加されたアルミナである場合、及びTiB2が体積率
で25％添加されたアルミナである場合の夫々の場合につ
いてマトリックスの体積に対する体積率が25％のSiCウ
ィスカーを添加し焼生すると表に示すような特性を有す
る複合材料が得られる。[Example] When the matrix is alumina, ZrB 2
In the case of alumina with 25% added and the case of TiB 2 with 25% by volume of alumina, it is shown that SiC whisker with 25% by volume to matrix volume is added and calcined. As a result, a composite material having the characteristics shown in FIG.
［発明の効果］ 本発明によれば放電加工が容易であり、且つ曲げ強さ
の大きいセラミックス複合材料を提供し得る。 [Effects of the Invention] According to the present invention, it is possible to provide a ceramic composite material that is easily subjected to electric discharge machining and has a large bending strength.
Claims (2)
と共に、アルミナを主成分とすることを特徴とするセラ
ミックス複合材料。1. A ceramic composite material comprising SiC whiskers and ZrB 2 mixed therein and containing alumina as a main component.
を20〜50Vol％添加したマトリックスに、直径が0.5〜2.
5ミクロンであり、長さが10〜80ミクロンのSiCウィスカ
ーを前記マトリックスの体積に対して10〜40Vol％添加
し、該SiCウィスカーの添加されたマトリックスを焼成
することを特徴とするセラミックス複合材料の製造方
法。2. ZrB 2 having a diameter of 0.5 to 10 microns on alumina.
Is added to a matrix containing 20 to 50% by volume, and a diameter of 0.5 to 2.
A ceramic composite material, characterized in that 5 to 10 micron long SiC whiskers having a length of 10 to 80 microns are added to the matrix in an amount of 10 to 40% by volume based on the volume of the matrix, and the matrix to which the SiC whiskers are added is fired. Production method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63009289A JP2575440B2 (en) | 1988-01-19 | 1988-01-19 | Ceramics composite material and method for producing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63009289A JP2575440B2 (en) | 1988-01-19 | 1988-01-19 | Ceramics composite material and method for producing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01188460A JPH01188460A (en) | 1989-07-27 |
| JP2575440B2 true JP2575440B2 (en) | 1997-01-22 |
Family
ID=11716319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63009289A Expired - Lifetime JP2575440B2 (en) | 1988-01-19 | 1988-01-19 | Ceramics composite material and method for producing the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2575440B2 (en) |
-
1988
- 1988-01-19 JP JP63009289A patent/JP2575440B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01188460A (en) | 1989-07-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU617693B2 (en) | Ceramic cutting tool inserts | |
| JPS5924751B2 (en) | Sintered shaped body | |
| JP2777679B2 (en) | Spinel ceramics and manufacturing method thereof | |
| Wu et al. | Reaction bonding and mechanical properties of mullite/silicon carbide composites | |
| CUTLER et al. | Liquid phase sintered silicon carbide | |
| JPS638071B2 (en) | ||
| DE69412293T2 (en) | Ceramic cutting tool reinforced with silicon carbide and particles | |
| JPS61291463A (en) | Material for high toughness ceramic tool | |
| JPS6219396B2 (en) | ||
| CN113105216A (en) | A kind of injection-molded zirconium-aluminum composite ceramic and preparation method thereof | |
| Larker et al. | HOT ISOSTATIC PRESSING AND ITS APPLICABILITY TO SILICON CARBIDE AND BORON CARBIDE. | |
| JP2575440B2 (en) | Ceramics composite material and method for producing the same | |
| Pan et al. | Microstructure and mechanical properties of Ti3SiC2/3Y-TZP composites by spark plasma sintering | |
| Tiegs et al. | Effect of Aspect Ratio and Liquid‐Phase Content on Densification of Alumina‐Silicon Carbide Whisker Composites | |
| US5928583A (en) | Process for making ceramic bodies having a graded porosity | |
| JPH06287070A (en) | Composite reinforced ceramics | |
| JP2577909B2 (en) | Ceramics composite material and method for producing the same | |
| SE463416B (en) | OXID-BASED CERAMIC MATERIAL FOR CHEESE SEPARATION PROCESSING STEEL | |
| JP2642115B2 (en) | Alumina-coated SiC whiskers and SiC whisker reinforced ceramic composites | |
| JP2925089B2 (en) | Ceramic composite sintered body and method of manufacturing the same | |
| JPS63162583A (en) | Manufacture of fiber reinforced ceramics | |
| JPH06321620A (en) | High toughness ceramic material | |
| JP2581128B2 (en) | Alumina-sialon composite sintered body | |
| JP2726419B2 (en) | Fiber reinforced silicon nitride ceramics | |
| JP2597889B2 (en) | Method for producing alumina-silica based sintered body |