Ceramic porous bodies and method of producing the same

Details Ceramic porous bodies and method of producing the same Ceramic porous bodies and method of producing the same

1997-03-19

1998-06-02

Czaja, Donald E.

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

Of inorganic materials

264 65, B29C 6704

Patent

active

057594600

ABSTRACT:
A ceramic porous body composed principally of silicon carbide or silicon nitride which has higher strength, higher heat resistance and higher thermal shock resistance and has a large number of fine pores, and a method of producing the same. The ceramic porous body, comprised principally of silicon carbide or silicon nitride, has a pore diameter of not more than 1 .mu.m, with a porosity of not less than 35%, and has a flexural strength of not less than 100 MPa. The ceramic porous body is produced by using a silicon oligomer which is capable of producing silicon carbide or silicon nitride when calcined, mixing the silicon oligomer with a silicon carbide powder or silicon nitride powder, and/or other ceramic powder which has a mean particle diameter of not more than 1.0 .mu.m, molding the mixture into shape, then sintering the molding in a suitable atmosphere at temperatures of not less than 1200.degree. C.

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