Pt-Al-Hf/Zr coating and method
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United States of America Patent
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Aug 2, 2016
Grant Date -
May 15, 2014
app pub date -
Oct 31, 2012
filing date -
May 20, 2009
priority date (Note) -
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Abstract
A Pt—Al—Hf/Zr aluminide coating that can be used as a bond coat for TBC and improve TBC spallation life in service at elevated temperatures is provided. The aluminide coating can include a metastable ternary or higher X—Pt/Pd—Ni phase where the phase and other elements in the alloy system are present in a NiAl β phase of the coating. The metastable phase can be present and observable in the as-deposited condition of the bond coating; e.g. in an as-CVD deposited condition of the bond coating.
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