A promising material for thermal barrier coating

Pyrochlore-related compound Sm<sub>2</sub>FeTaO<sub>7</sub>

Journal article (2018)

Authors

Jun Yang Nanjing Engineering University, Tsinghua University
Yi Han Tsinghua University
Muhammad Shahid Tsinghua University
Wei Pan Tsinghua University
M. Zhao (OLD) MSE-1
Wangjie Wu Nanjing Engineering University
Chunlei Wan Tsinghua University
Research Group
(OLD) MSE-1
Mechanical properties Thermal conductivity Thermal barrier coating SmFeTaO
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Published Date

2018

Language

English

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Research Group

(OLD) MSE-1

Abstract

Pyrochlore-related compound Sm2FeTaO7 was synthesized and investigated. It is shown that the thermal conductivity values are approximately half of the Yttria-Stabilized Zirconia (YSZ) over the temperature range of 25–1000 °C. Especially, thermal conductivity at high temperature is close to that of minimum thermal conductivity, as predicted by theoretical investigation, signifying better heat insulation capabilities. Considering lower Young modulus, improved fracture toughness, and better high-temperature phase stability, Sm2FeTaO7 compound can be a promising material for thermal insulating applications, such as thermal barrier coatings.