| 摘要 |
PROBLEM TO BE SOLVED: To manufacture the artificial defect of TBC(thermal barrier coating) with its thickness and shape changed and to obtain a defect detection limit in an actual machine. SOLUTION: A method for forming a heat insulating layer having the artificial defect includes a process for forming an undercoat layer 12 on a base material 11, a process for forming a topcoat layer 13a on the undercoat layer 12, a process for forming a masking material 14 on the topcoat layer 13a excluding an artificial defect formation scheduled part, a process for forming an artificial defect forming member 15 on the topcoat layer exposed from the masking material, a process for forming the topcoat layer 13b again on the entire surface after the masking material 14 being removed, and a process for forming the artificial defect 16 in the topcoat layer 13b by eliminating the artificial defect forming member 15.
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