Ceramic articles with a modified metal-containing component...

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

C - Chemistry, Metallurgy

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C04B 35/65 (2006.01) C04B 35/71 (2006.01) C04B 41/51 (2006.01) C04B 41/88 (2006.01) C22C 1/10 (2006.01) C22C 29/12 (2006.01) C23C 10/22 (2006.01)

Patent

CA 1294992

ABSTRACT OF THE DISCLOSURE 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 intercon- nected 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-contain- ing 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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