Abstract

A commercially available thermal barrier coating (TBC) consisting of a 380 µm thick 8wt% yttria stabilized zirconia layer and a 220 µm thick MoCrAIY bond coating were plasma sprayed onto a nickel superalloy. Samples were sealed with an alumina precursor using a sol-gel infiltration technique. The sealed and the as sprayed samples were submitted to the CO2 continuous wave laser glazing. Finally, the laser glazed samples were submitted to the burner rig test and their performance was compared to that of the as sprayed ones. The microstructures of the resulting samples before and after the burner rig test were characterized using SEM.

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