Turbine blade or vane, a process for manufacturing a turbine blade or vane, as well as assessment process for the detachment of a thermal barrier coating

摘要

PROBLEM TO BE SOLVED: To provide a turbine blade operable by raising a temperature of high temperature gas, its manufacturing method, and a method of determining separation of a thermal barrier coat.;SOLUTION: Instead of a conventional turbine blade having an outer peripheral surface of a wing shape, this turbine blade has a turbine blade body with a wing-shaped cross section having an inside void arranged inside so as to pass cooling gas, and a plurality of cooling gas ports communicating with the inside void, and arranged on an outer peripheral surface, and the thermal barrier coat being a heat insulating material layer for covering the outer peripheral surface of the turbine blade body. The thermal barrier coat blocks up at least several cooling gas holes.;COPYRIGHT: (C)2003,JPO