THERMAL BARRIER COATING LAYER AND THERMAL BARRIER COATING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a thermal barrier coating layer capable of preventing a film from being peeled from a fillet part.SOLUTION: A thermal barrier coating layer 40 is formed on the surface of a turbine blade comprising: a wing body part 10; a wing end wall part 20 provided in at least one of a base end portion and a tip portion of the wing body part 10 and having a surface intersecting a direction where the wing body part 10 is extended; and a fillet part 30 connecting the wing body part 10 and the wing end wall part 20. The thermal barrier coating layer 40 comprises: a first layer 61 formed on the surface of the wing body part 10; a second layer 62 formed on the surface of the wing end wall part 20; and an intermediate layer 63 formed on the surface of the fillet part 30 and connecting the first layer 61 and the second layer 62. The first layer 61 is formed so as to disperse longitudinal splits C extended in the thickness direction of the first layer 61 in a surface direction. The intermediate layer 63 has a porosity larger than that of the first layer 61.SELECTED DRAWING: Figure 2