Near-infrared radiative properties of porous zirconia ceramics

被引：86
作者：
Dombrovsky, Leonid A.
Tagne, Herve Karadern
Baillis, Dominique
Gremillard, Laurent
机构：
[1] Russian Acad Sci, Inst High Temp, Moscow 111116, Russia
[2] Inst Natl Sci Appl, Ctr Therm Lyon, F-69621 Villeurbanne, France
[3] GEMPPM, CNRS, F-69621 Villeurbanne, France
来源：
INFRARED PHYSICS & TECHNOLOGY | 2007年 / 51卷 / 01期
基金：
俄罗斯基础研究基金会;
关键词：
radiation; infrared; absorption; scattering; ceramics; zirconia;
D O I：
10.1016/j.infrared.2006.11.003
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
Infrared radiative properties of zirconia ceramics of porosity about 16% are studied by means of the measurements of directional-hemispherical reflectance and transmittance in the wavelength range from 15 to 9 mu m. The recently suggested modified two-flux approximation is examined as a simplified basis of the identification procedure. A comparison with the exact numerical solution confirms a good accuracy of this approach for identification of the absorption coefficient of ceramics. An analysis of the results for transport scattering coefficient showed that scattering is determined by isotropic pores with characteristic average radius about 1 mu m. The corresponding approximate theoretical model of radiative properties of ceramics is suggested. The absorption coefficient of bulk zirconia in the semi-transparency range is obtained from the data for porous zirconia ceramics. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码：44 / 53
页数：10
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