关键词: 热障涂层, 电子束物理气相沉积, 比热容, 导热系数, 树枝晶

Abstract:

10 mol% Nd₂O₃ and Yb₂O₃ co-doped YSZ(3-5 mol% Y₂O₃ partially stabilized zirconia)was produced by a solid state sintering method.The doped material was t/t′ phase and YSZ was mixture of t/t′ and m phases.The thermal diffusion coefficient of the doped material was 4.10×10^-7 m²/s and that of 8YSZ(8 wt.% Y₂O₃ partially stabilized zirconia)was 6.41×10^-7m²/s at 1 100 ℃.The specific heat of the doped material was much lower than that of 8YSZ at the temperature between 2001 300 ℃.

Key words: TBCs,  , EB-PVD,  , specific , heat,  , thermal , conductivity, tree-like