公开(公告)号：US20220243592A1

公开(公告)日：2022-08-04

申请号：US17612060

申请日：2020-04-20

申请人： Mitsubishi Power, Ltd.

发明人： Katsumi NAMBA ,  Masahiro YAMADA ,  Masaharu ISHIDA ,  Ryosuke KIMURA ,  Rin OKAYASU ,  Yosuke KAWACHI ,  Yasuki DATE

IPC分类号： F01D5/00 ,  F01D5/14 ,  F01D9/02 ,  C25F3/02 ,  B05D3/10

摘要： A repair method for a gas turbine blade comprises: a step of removing a thermal barrier coating to expose at least part of a base material of the gas turbine blade; a first etching step of etching the exposed base material; a first identification step of identifying a base material deterioration layer that is harder than the base material from the etched base material; a first removal step of removing the identified base material deterioration layer if the base material deterioration layer is identified in the first identification step; and a step of applying a thermal barrier coating to the exposed base material after it is determined that there is no base material deterioration layer in the first identification step, or after the base material deterioration layer is removed in the first removal step.