JPS54126696A - Production of silicon nitride powder - Google Patents
Production of silicon nitride powderInfo
- Publication number
- JPS54126696A JPS54126696A JP2659678A JP2659678A JPS54126696A JP S54126696 A JPS54126696 A JP S54126696A JP 2659678 A JP2659678 A JP 2659678A JP 2659678 A JP2659678 A JP 2659678A JP S54126696 A JPS54126696 A JP S54126696A
- Authority
- JP
- Japan
- Prior art keywords
- powder
- silicon nitride
- nitrogenimide
- mixed
- production
- 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
Abstract
PURPOSE: To obtain high grade silicon nitride powder of high α-type silicon nitride content in a high yield by mixing Si powder, C, powder and silicon nitrogenimide powder in a fixed ratio and heat treating the mixed powder to remarkably accelerate reduction of the Si.
CONSTITUTION: Si powder, C powder and silicon nitrogenimide (SiN)2NH powder are mixed in a ratio of 1:0.4W0.005W2:0.005W2 by wt. The mixed powder is then reduction nitrided in an atmosphere of N2 or NH3 at 1350W1500°C to obtain α- type silicon nitride powder. The raw materials used are pref. above about 99% in purity. The particle size of the Si and C is pref. below 0.1 μm in average diameter and that of the nitrogenimide below 0.2 μm. This method is suitable for production of silicon nitride powder as raw material for silicon nitride type sintered structural material requiring heat resistance and high strength at high temp.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2659678A JPS54126696A (en) | 1978-03-10 | 1978-03-10 | Production of silicon nitride powder |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2659678A JPS54126696A (en) | 1978-03-10 | 1978-03-10 | Production of silicon nitride powder |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54126696A true JPS54126696A (en) | 1979-10-02 |
JPS6120486B2 JPS6120486B2 (en) | 1986-05-22 |
Family
ID=12197903
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2659678A Granted JPS54126696A (en) | 1978-03-10 | 1978-03-10 | Production of silicon nitride powder |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54126696A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3100554A1 (en) * | 1980-01-11 | 1981-11-19 | Toyo Soda Manufacturing Co., Ltd., Shin-Nanyo, Yamaguchi | HIGH-PURITY SILICON NITRIDE AND METHOD FOR THE PRODUCTION THEREOF |
-
1978
- 1978-03-10 JP JP2659678A patent/JPS54126696A/en active Granted
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3100554A1 (en) * | 1980-01-11 | 1981-11-19 | Toyo Soda Manufacturing Co., Ltd., Shin-Nanyo, Yamaguchi | HIGH-PURITY SILICON NITRIDE AND METHOD FOR THE PRODUCTION THEREOF |
US4346068A (en) * | 1980-01-11 | 1982-08-24 | Toyo Soda Manufacturing Co., Ltd. | Process for preparing high-purity α-type silicon nitride |
Also Published As
Publication number | Publication date |
---|---|
JPS6120486B2 (en) | 1986-05-22 |
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