Ceramic articles with a modified metal-containing component and

Details Ceramic articles with a modified metal-containing component and Ceramic articles with a modified metal-containing component and

1990-02-20

1992-06-16

Group, Karl

Compositions: ceramic

Ceramic compositions

Refractory

264 48, 264 60, 264344, 264DIG3, C04B 3510

Patent

active

051224887

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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