JPS6414176A - Production of silicon nitride sintered body - Google Patents
Production of silicon nitride sintered bodyInfo
- Publication number
- JPS6414176A JPS6414176A JP62171577A JP17157787A JPS6414176A JP S6414176 A JPS6414176 A JP S6414176A JP 62171577 A JP62171577 A JP 62171577A JP 17157787 A JP17157787 A JP 17157787A JP S6414176 A JPS6414176 A JP S6414176A
- Authority
- JP
- Japan
- Prior art keywords
- si3n4
- si2on2
- heat treatment
- sintered body
- product
- 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
Landscapes
- Ceramic Products (AREA)
Abstract
PURPOSE:To easily produce the title silicon nitride sintered body having excellent fracture toughness at a relatively low temp. by molding Si3N4 powder and a sintering assistant, embedding the molded product in the filling powder consisting of Si3N4, Si2ON2, and C, and heating the product in a gaseous N2 atmosphere under specified conditions. CONSTITUTION:Si3N4 powder and a sintering assistant are molded. The purity of the Si3N4 is preferably controlled to >= about 98%, and the particle size to <= about 2mum. Al2O3, Y2O3, Ti, etc., are used as the sintering assistant. The molded product is embedded in the filling powder consisting of Si3N4, Si2ON2, and C, and then heat- treated. The weight ratio of the components in the filling powder is preferably adjusted to Si2ON2/(Si2ON2+Si3N4)=0.05-0.5 and C/(C+Si2ON2)=0.1-0.3. In the heat treatment, the molded product is firstly heated at 1100-1300 deg.C in the gaseous N2 atmosphere contg. 1-50vol.% CO and kept at higher than ordinary pressure. The heat treatment at 1X10<-3>-500Torr vacuum and the heat treatment at 5-30kg/cm<2> pressure are alternately repeated more than once at the temp. ranging from the maximum temp. of the heat treatment to 1500 deg.C. The product is then heat treated in the N2 atmosphere kept at 5-30kg/cm<2> pressure and at 1500-1800 deg.C, and a sintered body is obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62171577A JPS6414176A (en) | 1987-07-09 | 1987-07-09 | Production of silicon nitride sintered body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62171577A JPS6414176A (en) | 1987-07-09 | 1987-07-09 | Production of silicon nitride sintered body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6414176A true JPS6414176A (en) | 1989-01-18 |
Family
ID=15925729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62171577A Expired - Lifetime JPS6414176A (en) | 1987-07-09 | 1987-07-09 | Production of silicon nitride sintered body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6414176A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5104833A (en) * | 1990-12-24 | 1992-04-14 | Harima Ceramic Co. Ltd. | Refractory for casting a basic substance |
| WO2009128386A1 (en) * | 2008-04-18 | 2009-10-22 | 株式会社東芝 | Anti-wear member, anti-wear instrument and method of producing anti-wear member |
-
1987
- 1987-07-09 JP JP62171577A patent/JPS6414176A/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5104833A (en) * | 1990-12-24 | 1992-04-14 | Harima Ceramic Co. Ltd. | Refractory for casting a basic substance |
| WO2009128386A1 (en) * | 2008-04-18 | 2009-10-22 | 株式会社東芝 | Anti-wear member, anti-wear instrument and method of producing anti-wear member |
| US8377837B2 (en) | 2008-04-18 | 2013-02-19 | Kabushiki Kaisha Toshiba | Wear resistant member, wear resistant device and method for manufacturing the wear resistant member |
| JP5487099B2 (en) * | 2008-04-18 | 2014-05-07 | 株式会社東芝 | Wear-resistant member, wear-resistant device, and method for manufacturing wear-resistant member |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| EXPY | Cancellation because of completion of term | ||
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080616 Year of fee payment: 15 |