Microstructure and thermal cycling behavior of nanostructured yttria partially stabilized zirconia (YSZ) thermal barrier coatings

作     者：孙杰 张丽丽 赵丹 

作者机构：School of Environmental and Chemical EngineeringShenyang Ligong University 

出 版 物：《Journal of Rare Earths》 (稀土学报（英文版）)

年 卷 期：2010年第28卷第S1期

页      面：198-201页

核心收录：

学科分类：080503[工学-材料加工工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：Project supported by the National Defense Basic Scientific Research Program of China (K0504030206) 

主　　题：nanostructure yttria stabilized zirconia isothermal oxidation thermal barrier coatings rare earths 

摘      要：Nanostructured yttria partially stabilized zirconia(YSZ) coatings were prepared by atmospheric plasma spraying(APS) using the conglomeration made by zirconia nanoparticle as the raw *** measurement methods,which consisted of scanning electron microscopy(SEM),transmission electron microscopy(TEM) and thermal cycling behavior,were used to character the morphology,composition and thermal oxidation behavior of the powder and the *** the results,it was shown that the YSZ coating was the laminar structure,and the elements distribution in the bond and top coat were *** YSZ coatings were composed of fine grains with size ranging from 30 to 110 *** laminar layers with columnar grains were surrounded with unmelted parts of the nanostructured powder and some equiaxed *** the as-sprayed nanostructured zirconia coatings,there existed pores that were less than 1 μ*** cracks were observed on some of the crystal *** cyclic oxidation experiment showed that the nanostructured coating had longer thermal cycling lifetime to exhibit the promising thermal cyclic oxidation *** failure of the nanostructured TBC was similar to the failure of conventional APS TBC.