Pre-oxidation treatment method for life extension of thermal barrier coating

摘要

The present invention relates to a heat treatment process for obtaining a dense and solid high-temperature oxidation resistance of high-aluminum oxide layer to improve the life and the metal chair intermediate bonding layer of the thermal barrier coating.; Heat treatment process according to the invention is different only by the same after all the existing thermal barrier coating process, but only for coating metal intermediate bonding layer on the base material in a process intermediate step budget screen processing.; Budget screen processing for the purpose of an intermediate bonding layer up to obtain a dense and solid aluminum metal over the intermediate bond coat oxide layer through heat treatment in air the coated specimen at 1050 ℃ up to 50 hours.; A specimen of the thermal barrier coating by the above method showed a repetition oxidation test as a result a very good resistance to oxidation properties from 1100 ℃ air, thermal shock property were also excellent.