JPS57106510A - Manufacture of si3n4 powder - Google Patents

Manufacture of si3n4 powder

Info

Publication number
JPS57106510A
JPS57106510A JP55184526A JP18452680A JPS57106510A JP S57106510 A JPS57106510 A JP S57106510A JP 55184526 A JP55184526 A JP 55184526A JP 18452680 A JP18452680 A JP 18452680A JP S57106510 A JPS57106510 A JP S57106510A
Authority
JP
Japan
Prior art keywords
powder
balls
manufacture
sinterability
pulverization
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
JP55184526A
Other languages
Japanese (ja)
Inventor
Hiroshi Tsukada
Akira Doi
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 JP55184526A priority Critical patent/JPS57106510A/en
Publication of JPS57106510A publication Critical patent/JPS57106510A/en
Pending legal-status Critical Current

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  • Ceramic Products (AREA)

Abstract

PURPOSE: To prevent components of balls for pulverization made of superhard alloy from entering Si3N4 powder as impurities and deteriorating the sinterability of the powder as starting material for manufacturing a sintered Si3N4 body by coating the surfaces of the balls with Si3N4 and using the coated balls in the manufacture of the powder.
CONSTITUTION: Si3N4 synthesized by a solid phase reaction method or a vapor phase reaction method is pulverized using balls for pulverization made of superhard WC-Co alloy so that the average grain size is regulated to ≤1μm, and ≥90% of the resulting powder has ≤3μm grain size. By coating the surfaces of the used balls with Si3N4 in several μm W several mm thickness, WC and Co as ball components are prevented from entering the powder as impurities due to wear and deteriorating the sinterability of the powder.
COPYRIGHT: (C)1982,JPO&Japio
JP55184526A 1980-12-24 1980-12-24 Manufacture of si3n4 powder Pending JPS57106510A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55184526A JPS57106510A (en) 1980-12-24 1980-12-24 Manufacture of si3n4 powder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55184526A JPS57106510A (en) 1980-12-24 1980-12-24 Manufacture of si3n4 powder

Publications (1)

Publication Number Publication Date
JPS57106510A true JPS57106510A (en) 1982-07-02

Family

ID=16154736

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55184526A Pending JPS57106510A (en) 1980-12-24 1980-12-24 Manufacture of si3n4 powder

Country Status (1)

Country Link
JP (1) JPS57106510A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62202873A (en) * 1986-02-28 1987-09-07 株式会社　リケン Ceramic sintered body and manufacture
JPS62288107A (en) * 1986-05-24 1987-12-15 バイエル・アクチエンゲゼルシヤフト Sinterable si3n4 powder and manufacture

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62202873A (en) * 1986-02-28 1987-09-07 株式会社　リケン Ceramic sintered body and manufacture
JPS62288107A (en) * 1986-05-24 1987-12-15 バイエル・アクチエンゲゼルシヤフト Sinterable si3n4 powder and manufacture

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