Title:
PRODUCTION OF SILICON NITRIDE COMPOSITE POWDER
Document Type and Number:
Japanese Patent JPH03261611
Kind Code:
A
Abstract:
PURPOSE: To obtain a raw material for high-strength silicon nitride composite material by heating a mixture of Si powder and carbonaceous powder in a nitrogen-containing inert gas atmosphere and causing carbonization reaction of Si and nitriding reaction at the same time.
CONSTITUTION: Metal Si powder is blended with carbonaceous powder to give a powder mixture. The mixture is heated to ≤1,400°C in a nitrogen-containing inert gas atmosphere. Carbonization reaction of the Si powder and nitriding reaction are effected at the same time. The synthesized silicon.carbide silicon.nitride composite powder has uniformly dispersed silicon carbide and composite ceramics produced from the powder has both excellent strength and fracture toughness.
Inventors:
HAKOSHIMA JIYUNICHIROU
AKIYAMA YUTAKA
TSUKAMOTO KEIZO
YAMAGISHI SENJO
AKIYAMA YUTAKA
TSUKAMOTO KEIZO
YAMAGISHI SENJO
Application Number:
JP5669090A
Publication Date:
November 21, 1991
Filing Date:
March 09, 1990
Export Citation:
Assignee:
NIHON CEMENT
International Classes:
C04B35/584; C01B21/068; C01B31/36; C04B35/58; C04B35/626; (IPC1-7): C01B21/068; C01B31/36; C04B35/58
Attorney, Agent or Firm:
Keiichiro Atsuta