SIMPLE AND INEXPENSIVE FLASH TECHNIQUE FOR DETERMINING THERMAL-DIFFUSIVITY OF CERAMICS

被引:19
作者
LOG, T [1 ]
JACKSON, TB [1 ]
机构
[1] CERAMATEC INC,SALT LAKE CITY,UT 84119
关键词
THERMAL DIFFUSIVITY; THERMAL CONDUCTIVITY; LASERS; FLASH TECHNIQUE; SOLIDS;
D O I
10.1111/j.1151-2916.1991.tb04325.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
A simple technique for determining the thermal diffusivity of ceramics at room temperature is presented. The technique is a variant of the well-known flash technique, but uses an inexpensive photo flash as the energy source, a fast-response paste-on thermocouple, and a precision digital voltmeter to measure the temperature rise. A data analysis technique, which does not need any knowledge of either the initial or the maximum sample temperature, is presented. Good agreement with the laser-flash technique for ceramics with thermal diffusivities in the range 0.5 x 10(-6) to 75 x 10(-6) m2.s-1 is obtained. Measurements of thermal diffusivity of stainless steel and graphite (standard reference materials) indicate that the method is accurate to within 3%.
引用
收藏
页码:941 / 944
页数:4
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