JPS54120299A - Production of beta-type silicon nitride - Google Patents

Production of beta-type silicon nitride

Info

Publication number
JPS54120299A
JPS54120299A JP2747178A JP2747178A JPS54120299A JP S54120299 A JPS54120299 A JP S54120299A JP 2747178 A JP2747178 A JP 2747178A JP 2747178 A JP2747178 A JP 2747178A JP S54120299 A JPS54120299 A JP S54120299A
Authority
JP
Japan
Prior art keywords
silicon nitride
cpd
metallic
type silicon
metallic silicon
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
JP2747178A
Other languages
Japanese (ja)
Inventor
Yasuo Imamura
Masaru Ide
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 JP2747178A priority Critical patent/JPS54120299A/en
Publication of JPS54120299A publication Critical patent/JPS54120299A/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
    • C01B21/0682—Preparation by direct nitridation of silicon

Abstract

PURPOSE: To cheaply produce β-type silicon nitride useful as fire brick, an iron discharge spout material for a blast furnace, etc. in a simple process and a high yield by nitriding mixed powder or metallic silicon and a magnesium cpd. at a temp. below the m.p. of metallic silicon.
CONSTITUTION: To metallic silicon of a purity above 95% and a grain size below 150 mesh is added a Mg cpd. as a nitriding accelerator, As the Mg cpd. MgO shows the highest effect, yet MgCO3, MgCl2l and MgF2 can be used. The amt. of the Mg cpd. added is 0.05W1% as metallic Mg to the metallic silicon. This powder mixt. is charged into a nitriding furnace and nitrided at below the m.p. (1400°C) of metallic silicon and above 1100°C with nitrogen or NH3-contg. gas introduced, forming β-type silicon nitride. Thus, silicon nitride can be obtd. contg. more than 90% of β-type silicon nitride.
COPYRIGHT: (C)1979,JPO&Japio
JP2747178A 1978-03-10 1978-03-10 Production of beta-type silicon nitride Pending JPS54120299A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2747178A JPS54120299A (en) 1978-03-10 1978-03-10 Production of beta-type silicon nitride

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2747178A JPS54120299A (en) 1978-03-10 1978-03-10 Production of beta-type silicon nitride

Publications (1)

Publication Number Publication Date
JPS54120299A true JPS54120299A (en) 1979-09-18

Family

ID=12222018

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2747178A Pending JPS54120299A (en) 1978-03-10 1978-03-10 Production of beta-type silicon nitride

Country Status (1)

Country Link
JP (1) JPS54120299A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4590053A (en) * 1983-07-14 1986-05-20 Sumitomo Chemical Company, Limited Method for producing α-form silicon nitride fine powders

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4590053A (en) * 1983-07-14 1986-05-20 Sumitomo Chemical Company, Limited Method for producing α-form silicon nitride fine powders

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