JPS6472909A - Production of beta-sialon-alpha-silicon nitride composite powder - Google Patents
Production of beta-sialon-alpha-silicon nitride composite powderInfo
- Publication number
- JPS6472909A JPS6472909A JP22827987A JP22827987A JPS6472909A JP S6472909 A JPS6472909 A JP S6472909A JP 22827987 A JP22827987 A JP 22827987A JP 22827987 A JP22827987 A JP 22827987A JP S6472909 A JPS6472909 A JP S6472909A
- Authority
- JP
- Japan
- Prior art keywords
- powder
- sialon
- alpha
- silicon nitride
- composite powder
- 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.)
- Granted
Links
- 239000000843 powder Substances 0.000 title abstract 8
- 239000002131 composite material Substances 0.000 title abstract 4
- 229910052581 Si3N4 Inorganic materials 0.000 title abstract 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract 2
- 239000002994 raw material Substances 0.000 abstract 2
- 239000011863 silicon-based powder Substances 0.000 abstract 2
- 239000006230 acetylene black Substances 0.000 abstract 1
- 229910052799 carbon Inorganic materials 0.000 abstract 1
- 239000003638 chemical reducing agent Substances 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 238000005121 nitriding Methods 0.000 abstract 1
- 239000012299 nitrogen atmosphere Substances 0.000 abstract 1
Landscapes
- Ceramic Products (AREA)
Abstract
PURPOSE:To obtain beta-SIALON-alpha-silicon nitride composite powder giving sintered compact having high fracture toughness, by reductively nitriding raw material blended with silicon powder, alumina powder and carbon powder under a specified two-stage temp. condition. CONSTITUTION:Silicon powder, alumina powder and carbon powder as reducing agent (e.g. acetylene black powder) are blended in the proportion giving SIALON. Then, the obtd. blended raw material is reductively nitrided in a nitrogen atmosphere at 1,350-1,460 deg.C for >=2hr and thereafter, further reductively nitrided at 1,470-1,550 deg.C for >=2hr. Then, the residual carbon is removed by heating the obtd. powder in the air to obtain the alpha-SIALON-alpha-silicon nitride composite powder. The sintered compact of the obtd. composite powder has high fracture toughness and can be used for the purpose required high fracture toughness, such as for cutting tool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62228279A JP2584240B2 (en) | 1987-09-14 | 1987-09-14 | Method for producing β-sialon-α silicon nitride composite powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62228279A JP2584240B2 (en) | 1987-09-14 | 1987-09-14 | Method for producing β-sialon-α silicon nitride composite powder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6472909A true JPS6472909A (en) | 1989-03-17 |
| JP2584240B2 JP2584240B2 (en) | 1997-02-26 |
Family
ID=16873990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62228279A Expired - Lifetime JP2584240B2 (en) | 1987-09-14 | 1987-09-14 | Method for producing β-sialon-α silicon nitride composite powder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2584240B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6040256A (en) * | 1993-10-12 | 2000-03-21 | Isuzu Ceramics Research Institute Co., Ltd. | Method for producing a reaction sintered ceramic |
-
1987
- 1987-09-14 JP JP62228279A patent/JP2584240B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6040256A (en) * | 1993-10-12 | 2000-03-21 | Isuzu Ceramics Research Institute Co., Ltd. | Method for producing a reaction sintered ceramic |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2584240B2 (en) | 1997-02-26 |
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