JPS6487566A - Production of silicon nitride-based sintered body - Google Patents
Production of silicon nitride-based sintered bodyInfo
- Publication number
- JPS6487566A JPS6487566A JP62247035A JP24703587A JPS6487566A JP S6487566 A JPS6487566 A JP S6487566A JP 62247035 A JP62247035 A JP 62247035A JP 24703587 A JP24703587 A JP 24703587A JP S6487566 A JPS6487566 A JP S6487566A
- Authority
- JP
- Japan
- Prior art keywords
- heat
- compact
- sintered body
- excess oxygen
- treated
- 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
Landscapes
- Ceramic Products (AREA)
Abstract
PURPOSE:To produce the title sintered body having excellent strength and oxidation resistance at high temp. and having high toughness by compacting the starting material contg. Si3N4 powder, the compd. of a group IIIa element, and excess oxygen, heat-treating the compact at a specified temp., and further subjecting the heat-treated compact to the hot hydrostatic press sintering at a specified temp. CONSTITUTION:The three-component mixed powder contg. 85-95mol.% Si3N4, 0.5-5mol.% of the compd. (oxides are most preferable) of an element (M) (e.g., Sc, Er, and Yb) selected from group IIIa elements, expressed in terms of an oxide (M2O3), and excess oxygen and wherein the molar ratio of the excess oxygen expressed in terms of SiO2 to the M2O3 is controlled to >=1 is used as the starting material and compacted. The compact is heat-treated at 1,550-1,850 deg.C. The heat-treated compact is subjected to the hot hydrostatic press sintering at 1,650-2,000 deg.C. By this method, the title sintered body having excellent strength and oxidation resistance at high temp. and having high toughness can be obtained.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62247035A JP2631108B2 (en) | 1987-09-30 | 1987-09-30 | Manufacturing method of silicon nitride sintered body |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62247035A JP2631108B2 (en) | 1987-09-30 | 1987-09-30 | Manufacturing method of silicon nitride sintered body |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6487566A true JPS6487566A (en) | 1989-03-31 |
JP2631108B2 JP2631108B2 (en) | 1997-07-16 |
Family
ID=17157442
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62247035A Expired - Fee Related JP2631108B2 (en) | 1987-09-30 | 1987-09-30 | Manufacturing method of silicon nitride sintered body |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2631108B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04209763A (en) * | 1990-12-07 | 1992-07-31 | Kyocera Corp | Silicon nitride sintered material for cutting tool |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62105957A (en) * | 1985-10-31 | 1987-05-16 | 京セラ株式会社 | Silicon nitride base sintered body and manufacture |
-
1987
- 1987-09-30 JP JP62247035A patent/JP2631108B2/en not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62105957A (en) * | 1985-10-31 | 1987-05-16 | 京セラ株式会社 | Silicon nitride base sintered body and manufacture |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04209763A (en) * | 1990-12-07 | 1992-07-31 | Kyocera Corp | Silicon nitride sintered material for cutting tool |
Also Published As
Publication number | Publication date |
---|---|
JP2631108B2 (en) | 1997-07-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |