Method for producing self-supporting ceramic bodies with graded

Details Method for producing self-supporting ceramic bodies with graded Method for producing self-supporting ceramic bodies with graded

1988-09-16

1989-11-21

Dixon, Jr., William R.

Compositions: ceramic

Ceramic compositions

Carbide or oxycarbide containing

501 88, 501 94, 501 96, 501 98, 501127, 501128, 501134, 501153, 264 65, 264 66, C04B 3502

Patent

active

048823066

ABSTRACT:
A method is provided for producing a self-supporting ceramic or ceramic composite body by oxidation of a parent metal, the self-supporting body having a graded microstructure characterized by a plurality of zones differing from each other in one or more properties. The zones in the body are attained by altering the process conditions during formation of the body such that a zone of the oxidation reaction product formed posterior to said altering has at least one property different from a zone of the oxidation reaction product formed anterior to said altering.

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patent: 3973977 (1976-08-01), Wilson
"Oxidation of Molten Aluminum Alloys. Reaction with Refractories"-M. Drouzy and M. Richard-Mar. 1974-Fonderie, France No. 332, pp. 121-128.
"Refractories for Aluminum Alloy Melting Furnaces"-B. Clavaud and V. Jost-Sep. 1980-Lillian Brassinga (from French), Jan. 1985.

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