Patent ID: 7585575

Claim:
In combination with a thermally stressed turbine component, a heat-insulating layer on the component and having a melting point above 2500° C., a thermal expansion coefficient in excess of 8×10 −6 K −1 , and a sintering temperature greater than 1400° C., wherein the heat-insulating layer has a perovskite structure of the general formula A 1+r (B′ 1/2+x B″ 1/2+y )O 3+z in which: A=at least one element of the group (Ba, Sr, Ca, Be), B′=at least one element of the group (Al, La, Nd, Gd, Er, Lu, Dy, Tb), B″=at least one element of the group (Ta, Nb), and −0.1<r,x,y,z<0.1.