Thermal barrier coating

Details Thermal barrier coating Thermal barrier coating

C - Chemistry, Metallurgy

23

C

C23C 8/40 (2006.01) B32B 15/04 (2006.01) C04B 35/48 (2006.01) C23C 14/08 (2006.01) C30B 7/02 (2006.01)

Patent

CA 2412265

A ceramic thermal barrier coating on a substrate wherein the coating comprises primary columnar grains that extend transversely of a surface of the substrate and that include integral secondary columnar grains extending laterally therefrom relative to a respective column axis. The secondary columnar grains typically extend from the primary columnar grains at an acute angle of less than 90 degrees relative to the column axis of the primary columnar grains. The coating structure exhibits reduced thermal conductivity as compared to a conventional thermal barrier coating.

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