| 摘要 |
PROBLEM TO BE SOLVED: To provide a shroud for a gas turbine including ceramic abradable coating excellent in abradable property and durability.SOLUTION: Ceramic abradable coating for a gas turbine comprises a heat-shielding ceramic layer and a porous ceramic abradable layer (hardness RC15Y: 80±3), a slit groove is provided in the porous ceramic abradable layer by machine work, and a slit groove width divided by the slit groove is 0.5-5 mm. Consequently, abradable property, heat cycle and durability against high temperature oxidation become excellent. |
