Article including a composite of unstabilized zirconium oxide particles in a metallic matrix, and its preparation
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United States of America Patent
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Apr 23, 2002
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app pub date -
Aug 29, 2000
filing date -
Aug 29, 2000
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Abstract
An article includes a substrate and a composite material bonded to the substrate. The composite material includes a matrix consisting of a metallic alloy having a solidus temperature of at least about 700.degree. C. and a plurality of unstabilized zirconium oxide particles distributed throughout the metallic alloy. The article is prepared by combining a precursor of the metallic alloy and the mass of unstabilized zirconium oxide powder to form a mixture, and applying the mixture as a heterogeneous composite material to a substrate to form the article. The step of applying occurs at an application temperature of greater than the solidus temperature of the metallic alloy.
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