Compositions: ceramic – Ceramic compositions – Refractory
Patent
1986-08-13
1989-09-19
Dixon, Jr., William R.
Compositions: ceramic
Ceramic compositions
Refractory
501 94, 264 48, 264 60, 264344, 264DIG36, C04B 3510
Patent
active
048681431
ABSTRACT:
A method of producing self-supporting ceramic bodies having a modified metal-containing component includes first providing a self-supporting ceramic body comprising (i) a polycrystalline oxidation reaction product formed upon oxidation of a molten parent metal precursor with an oxidant, and (ii) an interconnected metal-containing component at least partially accessible from one or more surfaces of said ceramic body. The surface or surfaces of the ceramic body is contacted with a quantity of foreign metal different from said interconnected metal-containing component at a temperature and for a time sufficient to allow for interdiffusion, whereby at least a portion of said metal-containing component is displaced by said foreign metal. The resulting ceramic body, having an altered metal-containing component, exhibits modified or improved properties.
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"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. Clauvaud and V. Jost-Sep. 1980-Lillian Brassinga (from French) Jan. 1985.
Newkirk Marc S.
Urquhart Andrew W.
Zwicker Harry R.
Dixon Jr. William R.
Group Karl
Lanxide Technology Company, LP
McShane William E.
Mortenson Mark G.
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