JPS5484899A - Method of preparing silicon nitride - Google Patents

Method of preparing silicon nitride

Info

Publication number
JPS5484899A
JPS5484899A JP15168577A JP15168577A JPS5484899A JP S5484899 A JPS5484899 A JP S5484899A JP 15168577 A JP15168577 A JP 15168577A JP 15168577 A JP15168577 A JP 15168577A JP S5484899 A JPS5484899 A JP S5484899A
Authority
JP
Japan
Prior art keywords
mixture
die
sio
punch
grain
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
JP15168577A
Other languages
Japanese (ja)
Other versions
JPS603033B2 (en
Inventor
Kiyoshi Inoue
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.)
Inoue Japax Research Inc
Original Assignee
Inoue Japax Research Inc
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 Inoue Japax Research Inc filed Critical Inoue Japax Research Inc
Priority to JP52151685A priority Critical patent/JPS603033B2/en
Publication of JPS5484899A publication Critical patent/JPS5484899A/en
Publication of JPS603033B2 publication Critical patent/JPS603033B2/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
    • C01B21/0685—Preparation by carboreductive nitridation

Abstract

PURPOSE: To accomplish production of Si3N4 through a discharge sintering of the mixture of powdered SiO2 and powdered C while N2 being penetrated thereinto.
CONSTITUTION: SiO2 and C is mixed evenly at a blending ratio of 1:2 by mole and about 10:4 by weight. The mixture fills between punches 6 and 7 within a die 1 and slightly compressed by a pressure of about 100 kg/cm2. For SiO2, quartz sand with a grain of less than 40μ is used and for C, petroleum coke with a grain of less than 20μ. N2 with a given pressure is inducted into a N2 gas tank 3 from a cylinder 20 and then, made to pass onto the side of a vaccum tank 2 and a die 1 through a porous graphite section 7b of a punch 7, a mixture 17 and a porous graphite section 6b of the punch 6 or the die 1. Under such a condition, with a switch 19 closed, the mixture is fed with a pulse-like current of AC and DC ranging from 200 to 2,000 Hz for discharging to form Si3N4. After the end of the reaction, increase of the compression pressure to about 0.4 to 1.0 T/cm2 makes the mass of Si3N4 closer.
COPYRIGHT: (C)1979,JPO&Japio
JP52151685A 1977-12-19 1977-12-19 Silicon nitride manufacturing method Expired JPS603033B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP52151685A JPS603033B2 (en) 1977-12-19 1977-12-19 Silicon nitride manufacturing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP52151685A JPS603033B2 (en) 1977-12-19 1977-12-19 Silicon nitride manufacturing method

Publications (2)

Publication Number Publication Date
JPS5484899A true JPS5484899A (en) 1979-07-06
JPS603033B2 JPS603033B2 (en) 1985-01-25

Family

ID=15524009

Family Applications (1)

Application Number Title Priority Date Filing Date
JP52151685A Expired JPS603033B2 (en) 1977-12-19 1977-12-19 Silicon nitride manufacturing method

Country Status (1)

Country Link
JP (1) JPS603033B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0122897A2 (en) * 1983-04-19 1984-10-24 KemaNord AB A process for the production of silicon nitride

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0424379U (en) * 1990-06-20 1992-02-27

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0122897A2 (en) * 1983-04-19 1984-10-24 KemaNord AB A process for the production of silicon nitride

Also Published As

Publication number Publication date
JPS603033B2 (en) 1985-01-25

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