Oxidation resistant coatings for molybdenum silicide-based...

Details Oxidation resistant coatings for molybdenum silicide-based... Oxidation resistant coatings for molybdenum silicide-based...

2002-09-24

2009-11-24

Meeks, Timothy (Department: 1792)

Coating processes

Coating by vapor, gas, or smoke

C427S250000, C427S455000, C427S569000, C427S576000

Reexamination Certificate

active

07622150

ABSTRACT:
An environmentally resistant coating comprising silicon, titanium, chromium, and a balance of niobium and molybdenum for turbine components formed from molybdenum silicide-based composites. The turbine component may further include a thermal barrier coating disposed upon an outer surface of the environmentally resistant coating comprising zirconia, stabilized zirconia, zircon, mullite, and combinations thereof. The molybdenum silicide-based composite turbine component coated with the environmentally resistant coating and thermal barrier coating is resistant to oxidation at temperatures in the range from about 2000° F. to about 2600° F. and to pesting at temperatures in the range from about 1000° F. to about 1800° F.

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