Patent ID: 7105236

Claim:
A thermal insulated metal substrate, comprising: a metal substrate; a thermal-insulating layer; and an adhesive layer provided between the surface of said metal substrate, and the thermal-insulating layer; wherein the thermal-insulating layer has a density in a range from 3.9 g/cm 3 to 4.2 g/cm 3 , is formed by means of an EB PVD process on the surface of the adhesive layer and comprises a thermal insulating material with at least 90% by weight of magnetoplumbitic crystal structure and has a substantially homogeneous structure with a chemical composition according to the general formula: Ln 3+ M 2+ 1 Al 11 O 19 , where Ln is a lanthanide, M is a divalent metal element selected from the group consisting of Mn, Fe, Co, Ni, Cu, Zn and Sr.