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On the resistance of rare earth oxide-doped YSZ to high temperature volcanic ash attack

文献类型：期刊论文

作者Xia J; Yang L; Wu RT; Zhou YC; Zhang L; Yin BB; Wei YG(魏悦广)
刊名SURFACE & COATINGS TECHNOLOGY
出版日期2016
卷号307页码:534-541
通讯作者邮箱lyang@xtu.edu.cn ; zhouyc@xtu.edu.cn
关键词Thermal barrier coatings Rare earth-doped YSZ Volcanic ash CMAS
ISSN号0257-8972
产权排序[Xia, J.; Yang, L.; Zhou, Y. C.; Yin, B. B.] Xiangtan Univ, Sch Mat Sci & Engn, Key Lab Key Film Mat & Applicat Equipment Hunan P, Xiangtan 411105, Hunan, Peoples R China; [Xia, J.; Yang, L.; Wu, R. T.; Zhou, Y. C.; Yin, B. B.] Xiangtan Univ, Sch Mat Sci & Engn, Minist Educ, Key Lab Low Dimens Mat & Applicat Technol, Xiangtan 411105, Hunan, Peoples R China; [Wu, R. T.] Natl Inst Mat Sci, 1-1 Namiki, Tsukuba, Ibaraki 3050044, Japan; [Zhang, L.] Chongqing Univ, Coll Mat Sci & Engn, Shazhenghie 174, Chongqing 400045, Peoples R China; [Wei, Y. G.] Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China
通讯作者Yang, L ; Zhou, YC (reprint author), Xiangtan Univ, Sch Mat Sci & Engn, Key Lab Key Film Mat & Applicat Equipment Hunan P, Xiangtan 411105, Hunan, Peoples R China.
中文摘要Thermal barrier coatings (TBCs), such as 7-8 wt.% yttria stabilized zirconia (YSZ), are widely used to reduce the temperature of coated materials. However, when a turbine operates in a harsh environment, for example a volcanic ash attack, sand and ash particles ingested by the engine could be deposited on the TBC surfaces as molten calcium-magnesium-alumino-silicate (CMAS). CMAS melts and penetrates into TBCs at high temperatures, which causes a loss of strain tolerance and results in the premature failure of the top coat. It is recognized that the formation of CMAS is inevitable due to exposing the turbine to sand and ash; therefore, CMAS mitigation solutions are among the top challenges for materials scientists. To some extent, CMAS is the biggest weakness of the traditional 7-8YSZ TBC material. The thermochemical interactions between YSZ and real volcanic ash are investigated in this paper as a means to alleviate the volcanic ash attack by understanding the underlying mechanisms. 7YSZ, 0.5Gd-8YSZ and 3Er-7YSZ powders and free-standing plates were prepared, respectively. The effect of the volcanic ash on the three different samples was investigated using an X-ray diffraction, scanning electron microscopy, a scanning transmission electron microscopy, and a differential scanning calorimetry. The phase transformations and reaction of TBCs materials subjected to a volcanic ash attack were examined and the volcanic ash degradation and mitigation mechanisms were discussed. It was found that rare earth-doped YSZ samples suffered less damage from the volcanic ash attack than the standard 7YSZ. The results demonstrate that rare earth-doped YSZ may be effectively utilized to mitigate a volcanic ash attack. (C) 2016 Published by Elsevier B.V.
分类号二类
类目[WOS]Materials Science, Coatings & Films ; Physics, Applied
研究领域[WOS]Materials Science ; Physics
关键词[WOS]Thermal barrier coatings ; Rare earth-doped YSZ ; Volcanic ash ; CMAS
收录类别SCI ; EI
原文出处http://dx.doi.org/10.1016/j.surfcoat.2016.09.033
语种英语
WOS记录号WOS:000390622200064
源URL[http://dspace.imech.ac.cn/handle/311007/59975]  
专题力学研究所_非线性力学国家重点实验室
推荐引用方式
GB/T 7714		 Xia J,Yang L,Wu RT,et al. On the resistance of rare earth oxide-doped YSZ to high temperature volcanic ash attack[J]. SURFACE & COATINGS TECHNOLOGY,2016,307:534-541.
APA Xia J.,Yang L.,Wu RT.,Zhou YC.,Zhang L.,...&魏悦广.(2016).On the resistance of rare earth oxide-doped YSZ to high temperature volcanic ash attack.SURFACE & COATINGS TECHNOLOGY,307,534-541.
MLA Xia J,et al."On the resistance of rare earth oxide-doped YSZ to high temperature volcanic ash attack".SURFACE & COATINGS TECHNOLOGY 307(2016):534-541.

入库方式： OAI收割

来源：力学研究所

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