Preparation and thermophysical properties of (Sm1−xErx)2Ce2O7 oxides for thermal barrier coatings
Preparation and thermophysical properties of (Sm1−xErx)2Ce2O7 oxides for thermal barrier coatings
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DOI：
10.1016/j.materresbull.2013.12.011
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发表时间：
2014-03
影响因子：
5.4
通讯作者：
Chen Xiaoge;Yan Shusen;Zhang Hongsong;Li Gang;Li Zhenjun;Ren Bo;Dang Xu-dan;Zhang Haoming;
中科院分区：
文献类型：
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作者：
Chen Xiaoge;Yan Shusen;Zhang Hongsong;Li Gang;Li Zhenjun;Ren Bo;Dang Xu-dan;Zhang Haoming;
(Sm1−xErx)2Ce2O7ceramics were synthesized by sol–gel method and sintered at 1600 °C for 10 h in air. The influence of Er2O3-substitution on the phase structure and thermophysical properties of Sm2Ce2O7was investigated. The phase structures of these ceramics were identified by X-ray diffraction showing that all synthesized ceramics have fluorite-type structure. The measurements for thermophysical properties of these ceramics show that their thermal conductivities and thermal expansion coefficients remarkably decreased through Er-substitution. However, the thermal expansion coefficients were higher than that of YSZ and their thermal conductivities were much lower than that of 8YSZ. The excellent thermophysical property implies that these solid solutions are potential materials for the ceramics layer in thermal barrier coatings.
