JPS6433074A - Production of silicon nitride sintered body having high strength - Google Patents
Production of silicon nitride sintered body having high strengthInfo
- Publication number
- JPS6433074A JPS6433074A JP62191094A JP19109487A JPS6433074A JP S6433074 A JPS6433074 A JP S6433074A JP 62191094 A JP62191094 A JP 62191094A JP 19109487 A JP19109487 A JP 19109487A JP S6433074 A JPS6433074 A JP S6433074A
- Authority
- JP
- Japan
- Prior art keywords
- obtd
- powder
- sintered body
- granulated
- 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.)
- Pending
Links
Landscapes
- Ceramic Products (AREA)
Abstract
PURPOSE:To produce a silicon nitride sintered body having high strength and having thin surface-modified layer of obtd. sintered body which is usable as a bearing member as it is without requiring further working by combining a forced drying stage of powder which has been granulated, with a preliminary treating stage succeeding the forced drying stage, and a stage for capsule free HIP treatment. CONSTITUTION:Powder of a raw material silicon nitride which has been mixed with a sintering aid is pulverized and granulated, and the granulated powder mixture is molded after it is once dried forcibly. Obtd. molded body is then sintered preliminarily and subjected to hot isotropic pressing at 1500-1700 deg.C under >200atm and <500atm pressure in N2 atmosphere. A sintered body having >=80kg/mm<2> four-point bending strength at RT is obtd. by working the sintered body, if necessary. When the granulated powder body is sieved after adding water thereto after drying once the powder forcibly, more preferred result may be obtd. because a uniform powder body having a specified water content is obtd.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62191094A JPS6433074A (en) | 1987-07-30 | 1987-07-30 | Production of silicon nitride sintered body having high strength |
| DE19883825955 DE3825955A1 (en) | 1987-07-30 | 1988-07-29 | Process for producing homogeneous silicon nitride sintered bodies |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62191094A JPS6433074A (en) | 1987-07-30 | 1987-07-30 | Production of silicon nitride sintered body having high strength |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6433074A true JPS6433074A (en) | 1989-02-02 |
Family
ID=16268754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62191094A Pending JPS6433074A (en) | 1987-07-30 | 1987-07-30 | Production of silicon nitride sintered body having high strength |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6433074A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011024976A1 (en) | 2009-08-31 | 2011-03-03 | 富士フイルム株式会社 | Organic electroluminescent element |
-
1987
- 1987-07-30 JP JP62191094A patent/JPS6433074A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011024976A1 (en) | 2009-08-31 | 2011-03-03 | 富士フイルム株式会社 | Organic electroluminescent element |
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