Thermal conductivity and phase stability of plasma sprayed ZrO2-Y2O3-La2O3 coatings

被引：80

作者：

Matsumoto, M

Aoyama, K

Matsubara, H

Takayama, K

Banno, T

Kagiya, Y

Sugita, Y

机构：

[1] Japan Fine Ceram Ctr, Mat Res & Dev Lab, Nagoya, Aichi 4568587, Japan

[2] Chuba Elect Power, Elect Power R&D Ctr, Nagoya, Aichi 4598522, Japan

来源：

SURFACE & COATINGS TECHNOLOGY | 2005年 / 194卷 / 01期

关键词：

thermal barrier coating (TBC); yttria stabilized zirconia (YSZ); sintering; lanthania; thermal conductivity; phase stability;

D O I：

10.1016/j.surfcoat.2004.04.078

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Thermal conductivity and phase stability of La2O3,Y2O3 stabilized ZrO2 plasma sprayed coatings were investigated. La2O3 was selected as a stabilizer because it had a significant effect on reducing densification Of Y2O3 stabilized ZrO2 (YSZ). The developed coating showed low thermal conductivity even after high temperature exposure due to its high resistance to sintering. However, phase stability and thermal cycle life of the coating decreased as the amount of La2O3 was increased. It was concluded that optimum amount of La2O3 addition was about 1 mol% to suppress sintering with little degradation of other properties. (c) 2004 Elsevier B.V. All rights reserved.

引用

页码：31 / 35

页数：5

共 19 条

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