Thermal conductivity of yttria-zirconia single crystals, determined with spatially resolved infrared thermography

被引：137

作者：

Bisson, JF ^{[1
]}

Fournier, D

Poulain, M

Lavigne, O

Mévrel, R

机构：

[1] Ecole Super Phys & Chim Ind Ville Paris, Lab Opt Phys, F-75005 Paris, France

[2] Off Natl Etud & Rech Aerosp, Metall Mat & Proc Dept, F-92322 Chatillon, France

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2000年 / 83卷 / 08期

关键词：

D O I：

10.1111/j.1151-2916.2000.tb01502.x

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The thermal diffusivity of yttria-zirconia (Y2O3-ZrO2) single crystals, with YO1.5 concentrations in the range of 0-60 mol%, has been determined using a new method that is based on spatially resolved (20 mu m) infrared mapping of a modulated thermal field. The decreasing trend of the thermal conductivity (K), as a function of the YO1.5 content (up to 20 mol%), can be described using a model based on a Debye approach that has been modified hg introducing a cut-off length for the phonon mean free path. At higher concentrations, K increases, as a result of a possible ordering of the point defects.

引用

页码：1993 / 1998

页数：6

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