Thermal barrier coating system having a top coat with a graded interface
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United States of America Patent
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Apr 4, 2000
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N/A
app pub date -
Jan 26, 1999
filing date -
Feb 9, 1998
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Abstract
The invention provides an improved thermal barrier coating system for a hot section component. The thermal barrier coating has a metallic bond coat and a ceramic top coat made of two constituents. The top coat is formed so that there is provided a graded interface between the monolithic layers of the two top coat constituents. This allows an increase in overall thickness of the thermal barrier coating which provides a higher thermal insulation for the component being protected.
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