Patent ID: 6916561
Filing Date: 2005-07-12
Classification: C23C,F01D,F05D,Y10T

Abstract:
1. A thermal barrier coating for an underlying metal substrate which comprises a zirconia-containing ceramic composition having a c/a ratio of the zirconia lattice in the range of from about 1.0057 to about 1.0110 and stabilized in the tetragonal phase by a stabilizing amount of a stabilizing metal oxide, the thermal barrier coating having: 1. a fraction of porosity of from about 0.15 to about 0.25; and 2. an impact and erosion resistance property defined by at least one of the following formulas: wherein s=1.0117−c/a ratio; p is the fraction of porosity; I is at least about 70 g/mil; and E is at least about 80 g/mil.