Preparation and Thermal Conductivity of Y2Ce2O7 Ceramic Material

被引：15
|
作者：
Zhang, Hongsong [1 ]
Liao, Suran [3 ]
Yuan, Wei [3 ]
Guan, Shaokang [2 ]
机构：
[1] Zhengzhou Univ, Sch Mat Sci & Engn, Zhengzhou 450007, Peoples R China
[2] Henan Inst Engn, Dept Mech Engn, Zhengzhou 451191, Peoples R China
[3] Henan Inst Engn, Dept Mat & Chem, Zhengzhou 451191, Peoples R China
来源：
CHINA POSTDOCTORAL FORUM ON MATERIALS SCIENCE AND ENGINEERING | 2011年 / 266卷
关键词：
Ceramic materials; Thermal barrier coatings; Thermal conductivity; Phonon scattering;
D O I：
10.4028/www.scientific.net/AMR.266.59
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Y2Ce3O7 ceramic material was prepared by solid reaction at 1600 degrees C for 10h. The phase composition, microstructure and thermal conductivity of this material were investigated. XRD results reveals that single phase Y2Ce3O7 with fluorite structure was synthesized. Microstructure of Y2Ce3O7 was dense and no other unreacted oxides or interphase existed in the interfaces between grains. Because of phonon scattering by oxygen vacancies and difference in atomic mass between substitutional atoms and host atoms, thermal conductivty of Y2Ce3O7 is lower than that of 8YSZ, which implies that this ceramic can be used as novel candidate materials for thermal barrier coatings in the future.
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收藏
页码：59 / +
页数：2
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