材料科学
氧化钇稳定氧化锆
微观结构
热障涂层
发光
复合材料
立方氧化锆
化学工程
陶瓷
扫描电子显微镜
分析化学(期刊)
钇
作者
Tian Haoliang,Wang Changliang,Guo Mengqiu,Gao Junguo,Cui Yongjing,Wang Fuyuan,Liu Erbao,Jin Guo
标识
DOI:10.1016/j.ceramint.2019.10.170
摘要
Abstract In order to study the variation of rare earth oxides during thermal failure of thermal barrier coatings, Eu2O3-doped YSZ coatings with 0.5 mol%, 1.0 mol% and 1.5 mol% were prepared by explosive spraying. SEM, XRD, EDS and microhardness tester were used to analyze the effect of different rare earth oxide doping content on the morphology, composition and mechanical properties of the coatings. The results showed that with the increase of rare earth oxide doping content, the porosity of the coatings decreased, and the microhardness and fracture toughness increased. When the doping amount of rare earth oxide is 1.0 mol%, the bonding strength and thermal cycle times of the coating are the highest, 33.4 Mpa and 185 times respectively. With the increase of the doping amount of rare earth, the luminous intensity of the sprayed coating increases. After thermal shock test, the luminous intensity of Eu2O3-doped YSZ coatings at 592 and 608 nm decreased to a certain extent.
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