Influence of heat treatment on nanocrystalline zirconia powder and plasma-sprayed thermal barrier coatings

作     者：蒋显亮 刘纯波 刘敏 朱晖朝 

作者机构：School of Materials Science and EngineeringCentral South University Guangzhou Research Institute of Non-ferrous Metals 

出 版 物：《Transactions of Nonferrous Metals Society of China》 (中国有色金属学报（英文版）)

年 卷 期：2010年第20卷第12期

页      面：2272-2280页

核心收录：

学科分类：080503[工学-材料加工工程] 0806[工学-冶金工程] 08[工学] 0818[工学-地质资源与地质工程] 0815[工学-水利工程] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0813[工学-建筑学] 0802[工学-机械工程] 0814[工学-土木工程] 0702[理学-物理学] 080201[工学-机械制造及其自动化] 

基　　金：Project(1343-77212)supported by the Innovation Program for Graduate Students of Central South University China 

主　　题：nanocrystalline material zirconia thermal barrier coating heat treatment phase composition 

摘      要：Nanostructured zirconia top coat was deposited by air plasma spray and NiCoCrAlTaY bond coat was deposited on Ni substrate by low pressure plasma *** and conventional thermal barrier coatings were heat-treated at temperature varying from 1050 to 1 250oC for 2-20 *** results show that obvious grain growth was found in both nanostructured and conventional thermal barrier coatings(TBCs)after high temperature heat ***/tetragonal phases were transformed into cubic phase in the agglomerated nano-powder after *** cubic phase content increased with increasing calcination *** of the powder made the yttria distributed on the surface of the nanocrystalline particles dissolve in zirconia when grains *** from the phase constituent of the as-sprayed conventional TBC which consisted of diffusionlesstransformed tetragonal,the as-sprayed nanostructured TBC consisted of cubic phase.