JPS6461358A - Silicon nitride sintered compact - Google Patents
Silicon nitride sintered compactInfo
- Publication number
- JPS6461358A JPS6461358A JP62218342A JP21834287A JPS6461358A JP S6461358 A JPS6461358 A JP S6461358A JP 62218342 A JP62218342 A JP 62218342A JP 21834287 A JP21834287 A JP 21834287A JP S6461358 A JPS6461358 A JP S6461358A
- Authority
- JP
- Japan
- Prior art keywords
- sintered compact
- excess oxygen
- si3n4
- beta
- silicon nitride
- 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 obtain a silicon nitride sintered compact having excellent flexural strength at high temperature and oxidation resistance, by constituting the sintered compact having a specific beta-Si3N4, Sc and Yb or Dy, content of excess oxygen and grain boundary phase of beta-Si3N4. CONSTITUTION:A silicon nitride sintered compact containing 85-99mol.% beta-Si3N4, 1-5mol.% [calculated in terms of oxide (M2O3)] compound of at least one kind of element (M) in Sc, Yb, Ho and Dy and excess oxygen (O), having <=0.8 [excess oxygen mol. number (calculated in terms of SiO2)/M2O3 mol. number], main crystalline phase of beta-Si3N4 grain boundary phase being melilite, >=50kg/mm<2> high-temperature flexural strength (flexural strength at 1,400 deg.C and 4 points) and <=0.5mg/cm<2> middle-temperature oxidation increasing amount (1,000 deg.CX100hr). Control of excess oxygen amount in sintered compact is carried out by set of firing state and crystal of melilite is preferentially produced by setting excess oxygen amount within the above-mentioned range.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62218342A JP2631105B2 (en) | 1987-08-31 | 1987-08-31 | Silicon nitride sintered body |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62218342A JP2631105B2 (en) | 1987-08-31 | 1987-08-31 | Silicon nitride sintered body |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6461358A true JPS6461358A (en) | 1989-03-08 |
JP2631105B2 JP2631105B2 (en) | 1997-07-16 |
Family
ID=16718366
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62218342A Expired - Fee Related JP2631105B2 (en) | 1987-08-31 | 1987-08-31 | Silicon nitride sintered body |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2631105B2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6461357A (en) * | 1987-08-31 | 1989-03-08 | Kyocera Corp | Silicon nitride sintered material |
US5945363A (en) * | 1996-08-20 | 1999-08-31 | Ngk Insulators, Ltd. | Silicon nitride sintered material |
JP2000327426A (en) * | 1999-05-21 | 2000-11-28 | Ngk Spark Plug Co Ltd | Heating resistor, heating resistor for ceramic heater and ceramic heater using the same |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6296368A (en) * | 1985-10-23 | 1987-05-02 | 日本特殊陶業株式会社 | Manufacture of high anticorrosive silicon nitride sintered body |
JPS6456368A (en) * | 1987-08-27 | 1989-03-03 | Kyocera Corp | Silicon nitride sintered body |
JPS6461357A (en) * | 1987-08-31 | 1989-03-08 | Kyocera Corp | Silicon nitride sintered material |
-
1987
- 1987-08-31 JP JP62218342A patent/JP2631105B2/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6296368A (en) * | 1985-10-23 | 1987-05-02 | 日本特殊陶業株式会社 | Manufacture of high anticorrosive silicon nitride sintered body |
JPS6456368A (en) * | 1987-08-27 | 1989-03-03 | Kyocera Corp | Silicon nitride sintered body |
JPS6461357A (en) * | 1987-08-31 | 1989-03-08 | Kyocera Corp | Silicon nitride sintered material |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6461357A (en) * | 1987-08-31 | 1989-03-08 | Kyocera Corp | Silicon nitride sintered material |
US5945363A (en) * | 1996-08-20 | 1999-08-31 | Ngk Insulators, Ltd. | Silicon nitride sintered material |
US6099794A (en) * | 1996-08-20 | 2000-08-08 | Ngk Insulators, Ltd. | Process for production of silicon nitride material |
JP2000327426A (en) * | 1999-05-21 | 2000-11-28 | Ngk Spark Plug Co Ltd | Heating resistor, heating resistor for ceramic heater and ceramic heater using the same |
Also Published As
Publication number | Publication date |
---|---|
JP2631105B2 (en) | 1997-07-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |