JPS5717500A - Manufacture of silicon nitride whisker - Google Patents
Manufacture of silicon nitride whiskerInfo
- Publication number
- JPS5717500A JPS5717500A JP8861680A JP8861680A JPS5717500A JP S5717500 A JPS5717500 A JP S5717500A JP 8861680 A JP8861680 A JP 8861680A JP 8861680 A JP8861680 A JP 8861680A JP S5717500 A JPS5717500 A JP S5717500A
- Authority
- JP
- Japan
- Prior art keywords
- granules
- shirasu
- silicon nitride
- powder
- nitride whisker
- 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
- Crystals, And After-Treatments Of Crystals (AREA)
- Silicon Compounds (AREA)
Abstract
PURPOSE: To obtain silicon nitride whisker by mixing powder of " Shirasu " (pumiceous sand) with silicon powder in a specified wt. ratio, granulating the mixture, heating the granules to a specified temp. in a flow of gaseous nitrogen in the presence of a CO feeding source, and collecting the resulting fibrous substance.
CONSTITUTION: Purified Shirasu powder freed of iron simply is mixed with silicon powder in an amount corresponding to 1W2mol per one mole SiO2 contained in the Shirasu. To the mixture are added a binder such as starch or polyvinyl alcohol which is used as a CO feeding source in the next heating process and water, and they are formed into granules having 0.5W2mm grain size. The granules are charged into the lower part of a vessel 3 made of graphite, and they are heated to 1,400W 1,800°C through a furnace core tube 1 and a uniformly heating pipe 2 while introducing gaseous nitrogen from a pipe 5. The binder is decomposed to generate CO, and white fibrous silicon nitride whisker is formed on the upper ceiling and side wall of the vessel 3.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8861680A JPS5717500A (en) | 1980-06-30 | 1980-06-30 | Manufacture of silicon nitride whisker |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8861680A JPS5717500A (en) | 1980-06-30 | 1980-06-30 | Manufacture of silicon nitride whisker |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5717500A true JPS5717500A (en) | 1982-01-29 |
Family
ID=13947732
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8861680A Pending JPS5717500A (en) | 1980-06-30 | 1980-06-30 | Manufacture of silicon nitride whisker |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5717500A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009115455A (en) * | 2007-11-01 | 2009-05-28 | Kobe Steel Ltd | Transportation-cum-storage container of radioactive material |
-
1980
- 1980-06-30 JP JP8861680A patent/JPS5717500A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009115455A (en) * | 2007-11-01 | 2009-05-28 | Kobe Steel Ltd | Transportation-cum-storage container of radioactive material |
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