Abstract No.:	3978
Title:	Thermal cycling behavior of rare earth element doped yttria stabilized zirconia thermal barrier coating
Authors:	Xinghua Zhong* / Shanghai Institute of Ceramics, Chinese Academy of Sciences, P.R. China Huayu Zhao/ Shanghai Institute of Ceramics, Chinese Academy of Sciences, China Xiaming Zhou/ Shanghai Institute of Ceramics, Chinese Academy of Sciences, China Liang Wang/ Shanghai Institute of Ceramics, Chinese Academy of Sciences, China Fang Shao/ Shanghai Institute of Ceramics,Chinese Academy of Sciences, China Shunyan Tao/ Shanghai Institute of Ceramics, Chinese Academy of Sciences, China Chuanxian Ding/ Shanghai Institute of Ceramics, Chinese Academy of Sciences, China
Abstract:	Rare earth element doped Y2O3 partially-stabilized ZrO2 (RE-YSZ) thermal barrier coating was fabricated by plasma spraying and thermal cycling behaviour of the coating was investigated. The thermal cycling behaviour of the RE-YSZ coating was carried out on a burner rig with propane/oxygen flame at temperature 1523 K, followed by quenching to room temperature by compressed air jet. This type of cycling test is in order to simulate the service condition of thermal barrier coatings that used on turbine vanes in aeroengines. The RE-YSZ coating performed good thermal shock resistance and long thermal shock life. The good thermal cycling behaviour of the RE-YSZ coating is believed to be primarily attributed to the two factors: (i) the effect of rare earth element on stabilization of the non-transformable tetragonal phase at high temperature; (ii) the improvement in strain tolerance through the reduction of sintering ability.

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