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GLASS-CERAMIC COATINGS FOR TITANIUM ALUMINIDE SURFACES
GLASS-CERAMIC COATINGS FOR TITANIUM ALUMINIDE SURFACES
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机译：铝钛合金表面的玻璃陶瓷涂层
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摘要
An article of manufacture comprising protectively coated titanium aluminide, and a method for making it, wherein the protective coating is an adherent crystalline alkaline earth silicate glass-ceramic coating having a composition consisting essentially, in weight percent on the oxide basis, of about 20-75% total of oxides selected in amounts not exceeding the indicated proportions from the group consisting of up to about 50% BaO, 55% SrO, and 35% CaO, 25-60% of SiO2 and, as optional constituents, 0-25% MnO, 0-20% MgO, and 0-30% total of other compatible bivalent and trivalent metal oxides. The coating is applied as a continuous glassy coating and is converted to a crystalline glass-ceramic coating by heat treatment.
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