[1]ZHANG Hongsong,WEN Qian,ZHANG Bing.Preparation and Thermophysical Properties of( Sm0.5La0.5)2Ce2O7[J].Journal of Zhengzhou University (Engineering Science),2014,35(06):19-22.[doi:10.3969/i.issn.1671-6833.2014.06.005]
Copy
Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
35卷
Number of periods:
2014 06
Page number:
19-22
Column:
Public date:
2014-11-25
- Title:
-
Preparation and Thermophysical Properties of( Sm0.5La0.5)2Ce2O7
- Author(s):
-
ZHANG Hongsong; WEN Qian; ZHANG Bing
-
1. Department of Mechanical Engineering, Henan institute of Engineering, 2hengzhou 451191, China; 2.Sehool of Chemistry and Energy,Zhengzhou Unversity,Zhengzhou 450001.China
-
- Keywords:
-
thermal barrier coaling; rare earh cerium oxide; thermal conductivity; thermal expansion coellicient
- CLC:
-
TG174.75
- DOI:
-
10.3969/i.issn.1671-6833.2014.06.005
- Abstract:
-
In this paper, the ( Sm0.5La0.2)2Ce2O2 ceramie was synthesized by solid reacion using La2O3, Sm2O3 and CeO2 as raw materials. lts phase composition mierostruclure and composiion was analyzed by X-raydillraetion, seanning eleetrieal mieroseope ( SEM) and eleetronie difraction spectrum ( EDs), respeetively.Its thermal diffusivity and thermal expansion eoellicient are measured by laser flash method and pushing rodtechnique. Research results show that synthesized ( Sm0.5La0.2)2Ce2O2 ceramie has single fluorite structureand dense mieroslruclure. No other phase or un-reacted oxides exist in the interlaees between grains. lts loweithermal conduelivity and higher thermal expansion coelfcient can be attributed to the La-doping.