Patent ID: 7723249

Claim:
A ceramic material for use in high-temperature thermal barriers or abradable seal coatings, the ceramic material is supplied in a form for thermal spray applications and comprises: about 4 to 20 weight percent of a stabilizer of one or more rare earth oxides; and a balance of at least one of zirconia (ZrO 2 ), hafnia (HfO 2 ) and combinations thereof, wherein the zirconia (ZrO 2 ) and/or hafnia (HfO 2 ) is partially stabilized by the stabilizer, wherein the total amount of impurities is less than or equal to 0.15 weight percent, and wherein the amount of oxide impurities is less than or equal to: about 0.01 weight percent soda, about 0.01 weight percent silica, about 0.01 weight percent alumina, about 0.01 weight percent titania, about 0.01 weight percent hematite, about 0.025 weight percent calcia, and about 0.025 weight percent magnesia.