Synthesis and thermophysical performances of complex Ca3Ln3Ti7Ta2O26.5 (Ln=Dy and Er) oxides

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成果类型：

期刊论文

作者：

Zhang Hongsong*;Tong Yuping;Yang Xianfeng;Sang Weiwei;Zhang Haoming;...

通讯作者：

Zhang Hongsong

作者机构：

[Sang Weiwei; Zhang Haoming; Zhang Hongsong; Zhao Yongtao] Henan Univ Engn, Dept Mech Engn, Zhengzhou 451191, Peoples R China.

[Tong Yuping] North China Univ Water Resources & Elect Powder, Sch Mat Sci & Engn, Zhengzhou 450011, Peoples R China.

[Yang Xianfeng] Changsha Univ Sci & Technol, Coll Mat Sci & Engn, Changsha 410014, Peoples R China.

通讯机构：

[Zhang Hongsong] H

Henan Univ Engn, Dept Mech Engn, Zhengzhou 451191, Peoples R China.

语种：

英文

关键词：

Thermal conductivity;Thermal expansion coefficient;Complex oxides;Thermal barrier coatings

期刊：

Ceramics International

ISSN：

0272-8842

年：

2020

卷：

期：

页码：

2862-2867

DOI：

10.1016/j.ceramint.2019.09.279

基金类别：

Henan Province University Scientific and Technological Innovation Team [18IRTSHN005]; Key Project of Science and Technology Research at the Henan Province Department of Education [19A480001]

机构署名：

本校为其他机构

院系归属：

材料科学与工程学院

摘要：

Ca3Dy3Ti7Ta2O26.5 and Ca3Er3Ti7Ta2O26.5 oxides were synthesized using a high-temperature solid-state fritting technique, and the thermophysical performances of these two oxides were investigated. Both Ca3Dy3Ti7Ta2O26.5 and Ca3Er3Ti7Ta2O26.5 show a monophasic pyrochlore-type lattice. The thermal conductivity of Ca3Er3Ti7Ta2O26.5 is lower than that of Ca3Dy3Ti7Ta2O26.5. The oxides exhibit lower thermal conductivities than YSZ owing to their complex elemental compositions, large number of ions, and high oxygen vacancy concentrations. The thermal exp...

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Synthesis and thermophysical performances of complex Ca3Ln3Ti7Ta2O26.5 (Ln=Dy and Er) oxides

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