Thermal barrier coating film, turbine member, and thermal barrier coating method
AssigneeMitsubishi Heavy Industries, Ltd.
InventorsTaiji TORIGOE, Yoshifumi OKAJIMA, Daisuke KUDO, Hiroyuki MITSUI, Masahiko MEGA, Shuji TANIGAWA
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Abstract
A thermal barrier coating film includes a bond coat layer that is a metallic bond layer formed on a base material; a topcoat layer that is a ceramic-containing layer formed on the bond coat layer; and at least one of a protective layer and a protective substance. The protective layer is formed on the topcoat layer and mainly containing SrSO4. The protective substance is provided in the interior of a plurality of void spaces included in the topcoat layer and mainly contains SrSO4.
Claims10
A thermal barrier coating film comprising:
- a bond coat layer that is a metallic bond layer formed on a base material;
- a topcoat layer that is a ceramic-containing layer formed on the bond coat layer;
- and
- at least one of a protective layer formed on the topcoat layer and mainly containing SrSO4 and a protective substance provided in the interior of a plurality of void spaces included in the topcoat layer, the protective substance mainly containing SrSO4.
The thermal barrier coating film according to claim 10, wherein the topcoat layer has a plurality of void spaces.
The thermal barrier coating film according to claim 10, wherein the protective layer has a porosity of 0.1% to 5%.
A thermal barrier coating method comprising:
- forming, on a base material, a bond coat layer that is a metallic bond layer;
- forming, on the bond coat layer, a topcoat layer that is a ceramic-containing layer;
- and
- forming, on the topcoat layer, a protective layer that mainly contains SrSO4.
A thermal barrier coating method comprising:
- forming, on a base material, a bond coat layer that is a metallic bond layer;
- forming, on the bond coat layer, a topcoat layer that is a ceramic-containing layer having a plurality of void spaces;
- and
- injecting, in the interior of the void spaces in the topcoat layer, a protective substance that mainly contains SrSO4.
Dependencies are inferred from the claim text.