Title:
PRODUCTION OF HIGH TOUGHNESS SILICON NITRIDE CERAMIC
Document Type and Number:
Japanese Patent JPH1192231
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To produce silicon nitride ceramics of high toughness that has high toughness and a large strength without unevenness in quality. SOLUTION: This ceramic production process comprises the first step where a mixture of 5-40 vol.% of columnar silicon nitride elementary particles 1, 5-50 wt.% of a sintering aid and the rest amount of fine powder of silicon nitride with an average particle size of <=0.1 μm 2 are kneaded together with a binder, the second step where the kneaded product is molded, as a shear force is applied to the kneaded product in one direction, the third step where the molded product is heated to remove the binder and the fourth step where the molded product is sintered to grow the columnar particles.
Inventors:
MIYAHARA KAORU
SHIGEGAKI YASUHIRO
SUGITA TAKASHI
SASA TADASHI
NISHI MASATERU
SHIGEGAKI YASUHIRO
SUGITA TAKASHI
SASA TADASHI
NISHI MASATERU
Application Number:
JP25497597A
Publication Date:
April 06, 1999
Filing Date:
September 19, 1997
Export Citation:
Assignee:
ISHIKAWAJIMA HARIMA HEAVY IND
International Classes:
C04B35/584; B28B3/20; (IPC1-7): C04B35/584; B28B3/20
Attorney, Agent or Firm:
Yoshiaki Shimamura
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