JPS5742517A - Preparation of silicon nitride powder - Google Patents

Preparation of silicon nitride powder

Info

Publication number
JPS5742517A
JPS5742517A JP11882680A JP11882680A JPS5742517A JP S5742517 A JPS5742517 A JP S5742517A JP 11882680 A JP11882680 A JP 11882680A JP 11882680 A JP11882680 A JP 11882680A JP S5742517 A JPS5742517 A JP S5742517A
Authority
JP
Japan
Prior art keywords
powder
silicon nitride
under reduced
reduced pressure
formula
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
Application number
JP11882680A
Other languages
Japanese (ja)
Inventor
Masayuki Ishii
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.)
Sumitomo Electric Industries Ltd
Original Assignee
Sumitomo Electric Industries Ltd
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 Sumitomo Electric Industries Ltd filed Critical Sumitomo Electric Industries Ltd
Priority to JP11882680A priority Critical patent/JPS5742517A/en
Publication of JPS5742517A publication Critical patent/JPS5742517A/en
Pending 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
    • C01B21/0685—Preparation by carboreductive nitridation

Landscapes

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

Abstract

PURPOSE: To prepare silicon nitride powder giving sintered silicon nitride having high density and strength, by thermally reacting a mixed powder of silica and carbon black under reduced pressure in a furnace, and then heating in a nitriding gas atmosphere.
CONSTITUTION: A mixture obtained by uniformly mixing 1pt.wt. of amorphous silica powder and 0.4W1.0pts.wt. of carbon powder, is heated at 1,200W1,800°C in a furnace under reduced pressure. A part of the mixture is converted to SiC by the process according to the formula I. The reaction product is further reacted in a nitriding gas (nitrogen or ammonia gas) atmosphere at 1,200W1,500°C to obtain Si3N4 powder according to the reaction of formula II. The Si3N4 thus prepared has low SiC content and is almost free of SiO2 and Si2ON2. It can be formed to a dense and high- strength sintered material, which can be used as a heat-resistant structural material such as the engine parts of automobile, aircraft, etc.
COPYRIGHT: (C)1982,JPO&Japio
JP11882680A 1980-08-27 1980-08-27 Preparation of silicon nitride powder Pending JPS5742517A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11882680A JPS5742517A (en) 1980-08-27 1980-08-27 Preparation of silicon nitride powder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11882680A JPS5742517A (en) 1980-08-27 1980-08-27 Preparation of silicon nitride powder

Publications (1)

Publication Number Publication Date
JPS5742517A true JPS5742517A (en) 1982-03-10

Family

ID=14746101

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11882680A Pending JPS5742517A (en) 1980-08-27 1980-08-27 Preparation of silicon nitride powder

Country Status (1)

Country Link
JP (1) JPS5742517A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61183107A (en) * 1985-02-05 1986-08-15 Natl Inst For Res In Inorg Mater Preparation of fine powder mixture of silicon nitride and silicon carbide

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61183107A (en) * 1985-02-05 1986-08-15 Natl Inst For Res In Inorg Mater Preparation of fine powder mixture of silicon nitride and silicon carbide
JPH0463006B2 (en) * 1985-02-05 1992-10-08 Kagaku Gijutsucho Mukizaishitsu Kenkyushocho

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