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OwnerJames C. Administrator of the National Aeronautics and Space Administration, with respect to an invention of Fletcher, Wayne M. Phillipsinventors
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Cermet composition having high temperature oxidation resistance, high abrasion and corrosion resistances, and good thermal shock resistance, and particularly adapted for production of high temperature resistant cermet insulator bodies, comprising a sintered body of particles of stainless steel or molybdenum, in a ceramic phase comprised of a ceramic oxide, particularly a ceramic mixture of chromium oxide and aluminum oxide, and forming a coating of chromium oxide as an oxidation barrier around the metal particles, to provide oxidation resistance for the metal particles. The cermet compositions are designed particularly to provide high temperature resistant refractory coatings on stainless steel or molybdenum substrates.
A high temperature oxidation resistant cermet composition comprising a sintered body consisting essentially of metal or metal alloy particles selected from the group consisting of stainless steel, molybdenum and molybdenum-chromium alloy particles, said particles having a chromium oxide coating, said chromium oxide coated particles being dispersed in and bonded to a matrix of a ceramic selected from the group consisting of aluminum oxide, yttrium oxide, mixtures thereof, and said oxides in admixture with chromium oxide.
Dependencies are inferred from the claim text.