JPS6472966A - Whisker-reinforced silicon nitride sintered body and its production - Google Patents
Whisker-reinforced silicon nitride sintered body and its productionInfo
- Publication number
- JPS6472966A JPS6472966A JP62229672A JP22967287A JPS6472966A JP S6472966 A JPS6472966 A JP S6472966A JP 62229672 A JP62229672 A JP 62229672A JP 22967287 A JP22967287 A JP 22967287A JP S6472966 A JPS6472966 A JP S6472966A
- Authority
- JP
- Japan
- Prior art keywords
- si3n4
- silicon nitride
- alpha
- sintered body
- 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.)
- Pending
Links
Landscapes
- Ceramic Products (AREA)
Abstract
PURPOSE:To obtain the title silicon nitride sintered body having excellent flexual strength, breaking toughness, hardness, etc., by mixing prescribed Si3N4 whiskers, high-alpha rate Si3N4 fine powder, and sintering assistant powder, forming the mixture, and press-sintering the formed product in a nonoxidizing atmosphere. CONSTITUTION:(A) From 5-40wt.% silicon nitride whiskers having >=0.5mum minor axis and >=5mum length, (B) the silicon nitride powder having <=1mum mean particle diameter and wherein alpha-Si3N4/(alpha-Si3N4+beta-Si3N4) is controlled to >=90wt.%, and (C) sintering assistant powder (e.g., Y2O3) are mixed. The mixed powder is formed, and then press-sintered in a nonoxidizing atmosphere to obtain a whisker-reinforced silicon nitride sintered body wherein alpha-Si3N4/(alpha-Si3 N4+beta-Si3N4)>=20%. The obtained silicon nitride sintered body is appropriately used for an automobile engine members, cutting tools, etc.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62229672A JPS6472966A (en) | 1987-09-16 | 1987-09-16 | Whisker-reinforced silicon nitride sintered body and its production |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62229672A JPS6472966A (en) | 1987-09-16 | 1987-09-16 | Whisker-reinforced silicon nitride sintered body and its production |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6472966A true JPS6472966A (en) | 1989-03-17 |
Family
ID=16895872
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62229672A Pending JPS6472966A (en) | 1987-09-16 | 1987-09-16 | Whisker-reinforced silicon nitride sintered body and its production |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6472966A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100422729B1 (en) * | 2001-05-07 | 2004-03-12 | 현대자동차주식회사 | The Composition of High Toughness Silicon Nitride for Engine Parts |
-
1987
- 1987-09-16 JP JP62229672A patent/JPS6472966A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100422729B1 (en) * | 2001-05-07 | 2004-03-12 | 현대자동차주식회사 | The Composition of High Toughness Silicon Nitride for Engine Parts |
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