Thermal diffusivity measurements of porous ceramics

被引：3

作者：

García, E ^{[1
]}

Barea, R ^{[1
]}

Osendi, MI ^{[1
]}

Miranzo, P ^{[1
]}

机构：

[1] CSIC, Inst Ceram & Vidrio, E-28049 Madrid, Spain

来源：

EURO CERAMICS VIII, PTS 1-3 | 2004年 / 264-268卷

关键词：

thermal diffusivity; laser-flash; porous materials; cordierite; mullite; alumina;

D O I：

10.4028/www.scientific.net/KEM.264-268.2179

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 applicability of the laser flash method for measuring the thermal diffusivity of highly porous materials is investigated in cordierite, alumina and mullite materials. The surface roughness associated to the porosity produces some indetermination in the measurement of the sample thickness which induces errors in the thermal diffusivity calculation. This problem can be partially overcome by attaching two thin Cu layers to both surfaces of the samples and/or correcting the thickness with the mean pore size. It is shown that these corrections are only necessary in the case of coarse porosity samples.

引用

页码：2179 / 2182

页数：4

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