| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a thermal insulation coating method by which the peeling on the boundary between the surface of an undercoat layer and an Al2 O3 layer can be suppressed in the method for forming a ceramic shielding coating film by an electron beam physical deposition method (EB-PVD method), and a coating film excellent in heat cycle properties and improved in a service life can be obtd. SOLUTION: An undercoat layer 3 composed of an MCrAlY alloy layer (M: CoNi, NiCo, Ni, Co or Fe) is formed on a base material by a low pressure thermal spraying method, and thereafter, the formation of a thermal barrier coating film by an EB-PVD method is executed in a vacuum or in a nonoxidizing atmosphere in the initial stage and in a oxygen atmosphere after the coating of the surface of the undercoat layer with a ceramics layer 1.</p> |
