Method for making a smooth-surface ceramic

Details Method for making a smooth-surface ceramic Method for making a smooth-surface ceramic

1991-05-08

1994-05-31

Bell, Mark L.

Compositions: ceramic

Ceramic compositions

Aluminum compound containing

C04B 3510

Patent

active

053169891

ABSTRACT:
A method of forming a ceramic having a smooth ceramic surface and an assembly for forming ceramics having a flat and smooth ceramic surface are disclosed. A greenware precursor is disposed between a greenware base and a greenware cover. A frame is disposed between the greenware base and greenware cover for limiting compression of the greenware article to an amount which allows formation of a smooth ceramic surface during densification of the greenware precursor. The greenware base, greenware cover and greenware precursor are densified to cause the greenware precursor to form a ceramic having a smooth ceramic surface.

REFERENCES:
patent: 3698923 (1972-10-01), Stetson et al.
patent: 3879509 (1975-04-01), Elderbaum
patent: 4109377 (1978-08-01), Blazick et al.
patent: 4340436 (1982-07-01), Dubetsky et al.
patent: 4369154 (1983-01-01), Dougherty
patent: 4678762 (1987-07-01), Agarwal et al.
patent: 5085720 (1992-02-01), Mikeska et al.
patent: 5130067 (1992-07-01), Flatiz et al.
Wolfe, G., "Technique Produces Ceramic Substrates with 0.002'/' Camber" Circuits Manuf. (U.S.A.), vol. 15, No. 10, 38, 40, 42, Oct. 1975 (Abstract Only).

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