Method for producing a metal alloy powder such as MCRALY and coatings obtained with same
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United States of America Patent
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Feb 24, 2004
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N/A
app pub date -
Jun 14, 2001
filing date -
Dec 16, 1998
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Expired
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Abstract
The invention concerns a method comprising a step which consists in producing, on a precursor alloy powder containing at least the elements Cr, Al and Y, using a chemical or electrolytic deposition bath, a deposition containing at least a modifying element such as platinum, palladium, ruthenium or rhenium. The modifying element enhances the capacity of the coating to form from phase .beta., by exposure to oxygen at high temperature, an adhesive alumina surface barrier. The invention is useful for protecting against corrosion and oxidation at high temperatures aviation turbine blades.
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