Thermal conductivity of ytterbia-stabilized zirconia

被引：99

作者：

Feng, Jing ^{[1
,2
]}

Ren, Xiaorui ^{[1
]}

Wang, Xiaoyan ^{[1
]}

Zhou, Rong ^{[2
]}

Pan, Wei ^{[1
]}

机构：

[1] Tsinghua Univ, Dept Mat Sci & Engn, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China

[2] Kunming Univ Sci & Technol, Key Lab Adv Mat Precious Nonferrous Met, Educ Minist China, Kunming 650093, Peoples R China

来源：

SCRIPTA MATERIALIA | 2012年 / 66卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Thermal barrier coating; Oxides; Phase transformations; Thermal conductivity; X-RAY-DIFFRACTION; BARRIER COATINGS; MECHANICAL-PROPERTIES; LOW-TEMPERATURE; TRANSFORMATION; YSZ; BEHAVIOR;

D O I：

10.1016/j.scriptamat.2011.09.038

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The 3-10 mol.% Yb(2)O(3)-ZrO(2) (YbSZ) ceramics were synthesized by solid reaction methods and sintered at 1600 degrees C. The phases were identified by high-resolution X-ray diffraction with a K(alpha 1) monochromator, and it was found that the tetragonal-prime phases exist in 3-6 mol.% YbSZ. The thermal conductivity of the sintered YbSZ ceramics were measured using a laser Rash method and it was demonstrated that the values of the thermal conductivities of the 5 and 10 mol.% YbSZ ceramics are the lowest at high and room temperature, respectively, and much lower than that of 7YSZ. The lower thermal conductivity of YbSZ ceramics may be due to the heavier dopant of ytterbium and the tetragonal-prime ZrO(2) phase. (C) 2011 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：41 / 44

页数：4

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