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JPS5422000A - Process for producing alpha-type silicon nitride - Google Patents

Process for producing alpha-type silicon nitride

Info

Publication number
JPS5422000A
JPS5422000A JP8626077A JP8626077A JPS5422000A JP S5422000 A JPS5422000 A JP S5422000A JP 8626077 A JP8626077 A JP 8626077A JP 8626077 A JP8626077 A JP 8626077A JP S5422000 A JPS5422000 A JP S5422000A
Authority
JP
Japan
Prior art keywords
particle size
silicon nitride
type silicon
producing alpha
same
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
JP8626077A
Other languages
Japanese (ja)
Other versions
JPS6047203B2 (en
Inventor
Koichi Sugawara
Tadasuke Shigi
Hirotaka Koga
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.)
Denka Co Ltd
Original Assignee
Denki Kagaku Kogyo KK
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 Denki Kagaku Kogyo KK filed Critical Denki Kagaku Kogyo KK
Priority to JP8626077A priority Critical patent/JPS6047203B2/en
Publication of JPS5422000A publication Critical patent/JPS5422000A/en
Publication of JPS6047203B2 publication Critical patent/JPS6047203B2/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B21/00—Nitrogen; Compounds thereof
    • C01B21/06—Binary compounds of nitrogen with metals, with silicon, or with boron, or with carbon, i.e. nitrides; Compounds of nitrogen with more than one metal, silicon or boron
    • C01B21/068—Binary compounds of nitrogen with metals, with silicon, or with boron, or with carbon, i.e. nitrides; Compounds of nitrogen with more than one metal, silicon or boron with silicon
    • C01B21/0682—Preparation by direct nitridation of silicon

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Ceramic Products (AREA)

Abstract

PURPOSE: To provide the subject process comprising the steps of : heating and nitriding shaped articles of a metal powder having a particle size less than the predetermined particle size in a low temperature range of N2 or NH3 atmospheric temperature, then pulverizing the same to a particle size less than the predetermined particle size, and renitriding the same in a temperature range higher than said range, whereby the quality of α-Si3N4 is improved and unnitrided matters are reduced.
COPYRIGHT: (C)1979,JPO&Japio
JP8626077A 1977-07-19 1977-07-19 Method for manufacturing α-type silicon nitride Expired JPS6047203B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8626077A JPS6047203B2 (en) 1977-07-19 1977-07-19 Method for manufacturing α-type silicon nitride

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8626077A JPS6047203B2 (en) 1977-07-19 1977-07-19 Method for manufacturing α-type silicon nitride

Publications (2)

Publication Number Publication Date
JPS5422000A true JPS5422000A (en) 1979-02-19
JPS6047203B2 JPS6047203B2 (en) 1985-10-21

Family

ID=13881840

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8626077A Expired JPS6047203B2 (en) 1977-07-19 1977-07-19 Method for manufacturing α-type silicon nitride

Country Status (1)

Country Link
JP (1) JPS6047203B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5888107A (en) * 1981-11-16 1983-05-26 Denki Kagaku Kogyo Kk Continuous preparation of alpha-type silicon nitride
JPH02225304A (en) * 1989-02-27 1990-09-07 Denki Kagaku Kogyo Kk Production of silicon nitride, silicon nitride powder and use of the same powder

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5888107A (en) * 1981-11-16 1983-05-26 Denki Kagaku Kogyo Kk Continuous preparation of alpha-type silicon nitride
JPH028964B2 (en) * 1981-11-16 1990-02-28 Denki Kagaku Kogyo Kk
JPH02225304A (en) * 1989-02-27 1990-09-07 Denki Kagaku Kogyo Kk Production of silicon nitride, silicon nitride powder and use of the same powder

Also Published As

Publication number Publication date
JPS6047203B2 (en) 1985-10-21

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