Patent ID: 6821641
Filing Date: 2004-11-23
Classification: C23C,F01D,F05C,F05D,Y10T

Abstract:
An article protected by a thermal barrier coating system, comprising:a substrate having a substrate surface; and a thermal barrier coating system overlying the substrate, the thermal barrier coating system comprising a thermal barrier coating formed of a thermal barrier coating material arranged as a plurality of columnar grains extending generally perpendicular to the substrate surface and having grain surfaces, and a form of a sintering inhibitor within the columnar grains, wherein the thermal barrier coating material is a major phase, and the form of the sintering inhibitor is a minor phase distributed within the columnar grains or concentrated at the grain surfaces, and wherein the form of the sintering inhibitor is selected from the group consisting of lanthanum chromate, chromium oxide, and yttrium chromate, mixtures thereof, mixtures thereof with aluminum oxide, modifications thereof wherein cobalt or manganese is substituted for chromium, precursors thereof, and reaction products thereof.