Evaluation Method of Thermal Cycling Property of EB-PVD Thermal Barrier Coatings
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Abstract:
Thermal cycling testing to the 8 batches of thermal barrier coating samples for different holding time was carried out by means of cycling heating and cooling apparatus to simulate TBCs service environment. Using a mathematical model of exponential decline to fit thermal cycle experimental data, characterization parameters of static oxidation performance and thermal fatigue performance of thermal barrier coated samples were obtained. The result indicates that static state oxidation performance and thermal fatigue performance of TBCs samples prepared under present experimental technology conditions have different match relation. The estimated value for static state oxidation performance is 677±194 h, and the estimated value for thermal fatigue performance is 6789±1818 times.
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[Chen Liqiang, Gong Shengkai, Xu Huibin. Evaluation Method of Thermal Cycling Property of EB-PVD Thermal Barrier Coatings[J]. Rare Metal Materials and Engineering,2013,42(2):340~344.] DOI：[doi]