Method for making porous, crushable core having an integral oute

Details Method for making porous, crushable core having an integral oute Method for making porous, crushable core having an integral oute

1977-10-06

1980-03-04

McCarthy, Helen M.

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

Of inorganic materials

106 389, 106 40R, 106 41, 106 62, 106 65, 106 732, 106 734, 164 41, 164132, 164369, 264 44, 264 455, 264 65, 264 66, B29H 720

Patent

active

041917200

ABSTRACT:
A method for simultaneously forming an integral barrier layer on selected external surfaces of a fired ceramic article and for increasing the porosity content and crushability characterstics thereof embodies the firing of a ceramic compact comprising a reactant fugitive filler material and a ceramic material in a controlled atmosphere.

REFERENCES:
patent: 2593507 (1952-04-01), Wainer
patent: 3538202 (1970-11-01), Bidard
patent: 3903225 (1975-09-01), Jones et al.
patent: 3969124 (1976-07-01), Stewart
patent: 4013477 (1977-03-01), Jatkar et al.
patent: 4031177 (1977-06-01), Auriol et al.
patent: 4073662 (1978-02-01), Borom
patent: 4097292 (1978-06-01), Hoseby et al.
Gitzen, W. H., "Alumina As a Ceramic Material"-pub. 1970 by Am. Cer. Soc., pp. 27-28, 30, 36-38, 104-105, 130-131.

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