Oxidation-resistant coatings bonded to metal substrates, and related articles and processes
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United States of America Patent
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Jul 26, 2005
Grant Date -
Mar 24, 2005
app pub date -
Dec 23, 2002
filing date -
Dec 23, 2002
priority date (Note) -
Expired
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Abstract
An article is described, which includes a metal-based substrate and an oxidation-resistant coating bonded to the substrate by a bonding agent, such as a braze material The oxidation-resistant coating material is often an aluminide- or MCrAlX-type coating, and can be one which contains relatively high amounts of aluminum. The coating is often very smooth, for maximum aerodynamic efficiency. The oxidation-resistant coating can be applied and bonded to the substrate by a variety of methods, using slurries, braze tapes, or metal foils. Coating repair methods are also described.
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