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Protecting a surface of a nickel-base article with a corrosion-resistant aluminum-alloy layer
Protecting a surface of a nickel-base article with a corrosion-resistant aluminum-alloy layer
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机译:用耐腐蚀铝合金层保护镍基制品的表面
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摘要
A surface of a nickel-base article such as an internal surface (36) of a gas turbine airfoil (22) is protected with a protective layer (40) of aluminum and at least one other element. To form the protective layer (40), a donor alloy is contacted to the protected surface of the article, and simultaneously the article and the donor alloy are heated to a coating temperature that is greater than about 0.7 of the absolute solidus temperature of the donor alloy but is such that the donor alloy remains in the form of a condensed phase contacting the protected surface of the article. The donor alloy is thereafter interdiffused into the protected surface of the article. IMAGE
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