Microstructure and properties evolution of plasma sprayed Al_(2)O_(3)-Y_(2)O_(3) composite coatings during high temperature and thermal shock treatment

作     者：Xingyu Wang Xiaolong Wang Xiaowen Sun Yong Yang Chen Zhang Yuduo Ma Yuhang Cui Yanchun Dong Dianran Yan You Wang Xingyu Wang;Xiaolong Wang;Xiaowen Sun;Yong Yang;Chen Zhang;Yuduo Ma;Yuhang Cui;Yanchun Dong;Dianran Yan;You Wang

作者机构：Key Lab.for New Type of Functional Materials in Hebei ProvinceState Key Laboratory of Reliability and Intelligence of Electrical EquipmentTianjin Key Laboratory of Materials Laminating Fabrication and Interface Control TechnologySchool of Materials Science and EngineeringHebei University of TechnologyTianjin 300132China Department of Materials ScienceHarbin Institute of TechnologyHarbin 150001China 

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

年 卷 期：2021年第39卷第6期

页      面：718-727,I0004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 Natural Science Foundation of China(51672067,51541208,51102074) the Natural Science Foundation of Hebei Province(E2018202034,E2015202070) the Foundation for Talent Training Project in Hebei Province(A2016002026) the Foundation for the Top Talents in Universities of Hebei Province(SLRC2017027) 

主　　题：Al_(2)O_(3)-Y_(2)O_(3)coating TiO_(2) Plasma spraying Thermal shock resistance Microstructure evolution 

摘      要：Al_(2)O_(3)-Y_(2)O_(3) composite powder with TiO_(2) additive was plasma sprayed to prepare Al_(2)O_(3)-Y_(2)O_(3) composite *** micro structure and properties evolution of the Al_(2)O_(3)-Y_(2)O_(3) coatings during high temperature and thermal shock resistance were *** results show that the micro structure of the Al_(2)O_(3)-Y_(2)O_(3)-TiO_(2) coating is more uniform than that of the Al_(2)O_(3)-Y_(2)O_(3) ***,amorphous phase is formed in the two *** Al_(2)O_(3)-Y_(2)O_(3)(-TiO_(2)) coatings were heat treated for 2 h at temperatures of 800,1000 and 1200℃,*** is found that the microstructure and properties of the two coatings have no obvious change at 800℃.Some of the amorphous phase is crystallized at1000℃,and meanwhile Y_(2)O_(3) and Al_(2)O_(3) react to form YAG phase and YAM *** 1200℃,all of the amorphous phases are *** heat treatment,the micro hardness of the two coatings is *** thermal shock resistance of the Al_(2)O_(3)-Y_(2)O_(3) system coatings can be improved by using TC4 titanium alloy as substrate and with NiCrAlY bonding ***,the Al_(2)O_(3)-Y_(2)O_(3)-TiO_(2) coating exhibits better thermal shock resistance due to the addition of TiO_(2).