Green ceramic composite and method for making such composite

Details Green ceramic composite and method for making such composite Green ceramic composite and method for making such composite

1993-08-06

1995-02-07

Ryan, Patrick J.

Stock material or miscellaneous articles

Composite

Of inorganic material

428206, 428209, 428210, 428325, 4284111, 428689, 428698, 428702, 156 89, 156289, 264 63, 264319, B32B 700

Patent

active

053874749

ABSTRACT:
A composite comprising an unfired ceramic body comprising an admixture of finely divided particles of ceramic solids and sinterable inorganic binder dispersed in a volatilizable solid polymeric binder having affixed and closely conformed to a surface of said body a flexible constraining release layer comprising finely divided particles of non-metallic inorganic solids dispersed in a volatilizable solid polymeric binder, the sinterable inorganic binder of the ceramic body being such that Penetration of said binder into said constraining release layer during subsequent firing is no more than 50 .mu.m and said constraining release layer being affixed and closely conforming such that upon firing X-Y shrinkage of the ceramic body is reduced. Also, a method for making the composite. The flexible, constraining, release layer substantially reduces and controls green ceramic body shrinkage in the x- and y-directions during firing.

REFERENCES:
patent: 3655496 (1972-04-01), Ettre et al.
patent: 4806188 (1989-02-01), Rellick
patent: 5006182 (1991-04-01), Gantzhorn, Jr. et al.
patent: 5085720 (1992-02-01), Mikeska et al.
patent: 5102720 (1992-04-01), Raj
patent: 5102749 (1992-04-01), Enloe et al.

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