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

1992-06-15

1993-11-30

Group, Karl

Stock material or miscellaneous articles

All metal or with adjacent metals

Component of composite having metal continuous phase...

428552, 428565, 428568, 428628, C22C 2900

Patent

active

052664155

ABSTRACT:
A method of producing self-supporting ceramic bodies having a modified metal-containing component includes first providing a 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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