Synthesis, characterisation and thermophysical properties of LaGdCe2O7 ceramic for thermal barrier coatings

被引：2

作者：

Zhang, Hongsong ^{[1
]}

Yan, Shuqing ^{[2
]}

Chen, Xiaoge ^{[3
]}

Li, Gang ^{[1
]}

Wang, Xinli ^{[1
]}

机构：

[1] Henan Inst Engn, Dept Mech Engn, Zhengzhou 450007, Peoples R China

[2] North China Inst Water Conservancy Hydroelect, Sch Math & Informat Sci, Zhengzhou 450002, Peoples R China

[3] Henan Inst Engn, Dept Construct Engn, Zhengzhou 450007, Peoples R China

来源：

MATERIALS RESEARCH INNOVATIONS | 2014年 / 18卷 / 05期

关键词：

Thermal barrier coatings; Rare earth ceria oxides; Thermophysical properties; Phonon scattering; CERIUM OXIDE; CONDUCTIVITY; EXPANSION; SYSTEM;

D O I：

10.1179/1433075X13Y.0000000167

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this paper, LaGdCe2O7 ceramic was synthesised by solution reaction method. Its phase composition, microstructure and thermophysical properties were investigated respectively. X-ray diffraction result showed that single phase LaGdCe2O7 with fluorite structure was successfully synthesised. Scanning electron microscopy result revealed that the microstructure of the product was dense and no other unreacted oxides or interphases exist in the interfaces between grains. Its thermal expansion coefficient was higher than that of conventional 8YSZ, while its thermal conductivity was much lower than that of 8YSZ. The lower thermal conductivity of this product was mainly attributed to the differences in atomic weight and ionic radius between solute and host atoms. The results imply that LaGdCe2O7 ceramic can be used as candidate material for the ceramic layer in thermal barrier coatings.

引用

页码：392 / 396

页数：5

共 50 条

[21] Preparation, Microstructure, and Thermophysical Properties of a Novel (La, Nd, Tm, Yb, Lu)2Zr2O7 High-Entropy Ceramic for Thermal Barrier Coatings
Wang, Yanli
Geng, Haojun
Yang, Lingxu
Wu, Liankui
Wang, Xu
Zeng, Chaoliu
Liu, Huijun
ADVANCED ENGINEERING MATERIALS, 2025,
[22] Thermophysical properties of BaY2O4:: A new candidate material for thermal barrier coatings
Maekawa, Takuji
Kurosaki, Ken
Yamanaka, Shinsuke
MATERIALS LETTERS, 2007, 61 (11-12) : 2303 - 2306
[23] Phase structure and thermophysical properties of co-doped La2Zr2O7 ceramics for thermal barrier coatings
Xiang, Jianying
Chen, Shuhai
Huang, Jihua
Zhang, Hua
Zhao, Xingke
CERAMICS INTERNATIONAL, 2012, 38 (05) : 3607 - 3612
[24] Preparation and thermophysical properties of (Sm1-xEr x)2Ce2O7 oxides for thermal barrier coatings
Zhang, H. (zhs761128@163.com), 1600, Elsevier Ltd (51):
[25] Preparation and thermophysical properties of (La0.4Sm0.5Yb0.1)2(Zr0.7Ce0.3)2O7 ceramic for thermal barrier coatings
Liu Ling
Xu Qiang
Wang Fuchi
Zhang Hongsong
HIGH-PERFORMANCE CERAMICS V, PTS 1 AND 2, 2008, 368-372 : 1334 - 1336
[26] Investigation about thermophysical properties of Ln2Ce2O7 (Ln = Sm, Er and Yb) oxides for thermal barrier coatings
Zhang Hongsong
Lv Jianguo
Li Gang
Zhang Zheng
Wang Xinli
MATERIALS RESEARCH BULLETIN, 2012, 47 (12) : 4181 - 4186
[27] Thermophysical and mechanical properties of PYZ thick thermal barrier coatings
Schwingel, D
Taylor, R
Haubold, T
Wigren, J
Gualco, C
Ladru, F
Lugscheider, E
Gourlaouen, V
THERMAL SPRAY, VOLS 1 AND 2: MEETING THE CHALLENGES OF THE 21ST CENTURY, 1998, : 623 - 628
[28] Microstructure analyses and thermophysical properties of nanostructured thermal barrier coatings
Hong Zhou
Fei Li
Jun Wang
Bao-de Sun
Journal of Coatings Technology and Research, 2009, 6 : 383 - 390
[29] In situ laser remelted thermal barrier coatings: Thermophysical properties
Antou, G
Hlawka, F
Cornet, A
Becker, C
Ruch, D
Riche, A
SURFACE & COATINGS TECHNOLOGY, 2006, 200 (20-21): : 6062 - 6072
[30] Microstructure analyses and thermophysical properties of nanostructured thermal barrier coatings
Zhou, Hong
Li, Fei
Wang, Jun
Sun, Bao-de
JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, 2009, 6 (03) : 383 - 390

← 1 2 3 4 5 →