JPS5717499A - Manufacture of silicon nitride whisker - Google Patents

Manufacture of silicon nitride whisker

Info

Publication number
JPS5717499A
JPS5717499A JP8861580A JP8861580A JPS5717499A JP S5717499 A JPS5717499 A JP S5717499A JP 8861580 A JP8861580 A JP 8861580A JP 8861580 A JP8861580 A JP 8861580A JP S5717499 A JPS5717499 A JP S5717499A
Authority
JP
Japan
Prior art keywords
powder
silicon nitride
granules
shirasu
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.)
Granted
Application number
JP8861580A
Other languages
Japanese (ja)
Other versions
JPS5854120B2 (en
Inventor
Yukio Isayama
Kazuo Kobayashi
Masaki Umebayashi
Hironori Hamazaki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
IJICHI SHIYUKEIJIYOU KK
IJIJI SHUGEIZO CO Ltd
National Institute of Advanced Industrial Science and Technology AIST
Original Assignee
IJICHI SHIYUKEIJIYOU KK
IJIJI SHUGEIZO CO Ltd
Agency of Industrial Science and Technology
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by IJICHI SHIYUKEIJIYOU KK, IJIJI SHUGEIZO CO Ltd, Agency of Industrial Science and Technology filed Critical IJICHI SHIYUKEIJIYOU KK
Priority to JP8861580A priority Critical patent/JPS5854120B2/en
Publication of JPS5717499A publication Critical patent/JPS5717499A/en
Publication of JPS5854120B2 publication Critical patent/JPS5854120B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Silicon Compounds (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)

Abstract

PURPOSE: To manufacture silicon nitride whisker by mixing powder of "Shirasu" (pumiceous sand) with Al 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 Al powder in 4:1W1:1wt. ratio on the basis of SiO2 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 1,400W1,800°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
JP8861580A 1980-06-30 1980-06-30 Method for manufacturing silicon nitride whiskers Expired JPS5854120B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8861580A JPS5854120B2 (en) 1980-06-30 1980-06-30 Method for manufacturing silicon nitride whiskers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8861580A JPS5854120B2 (en) 1980-06-30 1980-06-30 Method for manufacturing silicon nitride whiskers

Publications (2)

Publication Number Publication Date
JPS5717499A true JPS5717499A (en) 1982-01-29
JPS5854120B2 JPS5854120B2 (en) 1983-12-02

Family

ID=13947705

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8861580A Expired JPS5854120B2 (en) 1980-06-30 1980-06-30 Method for manufacturing silicon nitride whiskers

Country Status (1)

Country Link
JP (1) JPS5854120B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4521393A (en) * 1984-04-18 1985-06-04 Toshiba Ceramics Co. Limited Method of manufacturing β type silicon nitride whiskers
US4525335A (en) * 1982-04-01 1985-06-25 Tateho Kagaku Kogyo Kabushiki Kaisha Method of manufacturing crystalline silicon nitride and method of separation thereof
WO1997026222A1 (en) * 1996-01-16 1997-07-24 Advanced Minerals Corporation Purified natural glass product

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4525335A (en) * 1982-04-01 1985-06-25 Tateho Kagaku Kogyo Kabushiki Kaisha Method of manufacturing crystalline silicon nitride and method of separation thereof
US4521393A (en) * 1984-04-18 1985-06-04 Toshiba Ceramics Co. Limited Method of manufacturing β type silicon nitride whiskers
WO1997026222A1 (en) * 1996-01-16 1997-07-24 Advanced Minerals Corporation Purified natural glass product

Also Published As

Publication number Publication date
JPS5854120B2 (en) 1983-12-02

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