Production of ceramic and ceramic-metal composite articles with

Stock material or miscellaneous articles – Composite – Of inorganic material

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428698, 428699, 428702, 4283077, 4283128, 4283142, 4283179, 4283191, 4284111, 428413, 428421, 428426, 501 93, 501 97, 501 98, B32B 1800

Patent

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055165958

ABSTRACT:
The invention comprises a method of making self-supporting ceramic and ceramic composite structures by the oxidation reaction of a body of molten parent metal precursor with a vapor-phase oxidant to form an oxidation reaction product. This reaction or growth is continued to form a thick, self-supporting ceramic or ceramic composite body. The body is recovered and in a separate subsequent operation, at least a portion of a surface is coated with one or more materials in order to effect desired changes in the properties of the surface, e.g., hardness, corrosion resistance.

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