Patent ID: 8153274

Claim:
A thermal barrier layer for a metallic component, comprising: an inner contact layer; an intermediate layer; and an outer top layer, wherein the inner contact layer is applied to a surface of the component via an adhesion-promoting layer that is disposed therebetween, wherein between the outer top layer and the inner contact layer the intermediate layer is formed, wherein the intermediate layer is formed from a material comprising at least one component with at least one phase which stoichiometrically contains 1 to 80 mole percent of Mx 2 O 3 , 0.5 to 80 mole percent MyO, and the rest being Al 2 O 3 with random impurities, wherein Mx is selected among lanthanum, chromium, barium, neodymium, or mixtures thereof, and wherein My is selected among alkaline earth metals, transition metals, and rare earths, or mixtures thereof, and wherein the inner contact layer and the outer top layer are made from a zirconium oxide which is partially stabilized by yttrium, yttrium oxide, calcium, or magnesium.