Thermal conductivity of alumina measured with three techniques

被引：0
|
作者：
Hemrick, JG
Kistler, CW
Wereszczak, AA
Ferber, MK
机构：
[1] Oak Ridge Natl Lab, Div Met & Ceram, Oak Ridge, TN 37831 USA
[2] Orton Ceram Fdn, Westerville, OH 43086 USA
来源：
JOURNAL OF TESTING AND EVALUATION | 2003年 / 31卷 / 05期
关键词：
thermal conductivity; refractories; calorimetry; hot-wire; laser-flash; alumina;
D O I：
暂无
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Three common ASTM methods (calorimetry, hot-wire, and laser-flash) for determining the thermal conductivity of refractory ceramics were compared using a commonly available bulk material having a microstructure sufficient for all three methods of analysis. Experimental measurements were made between 20-1200degreesC on a fine-grained, 94% pure aluminum oxide using each technique. Results from the hot-wire and laser-flash methods were found to be similar and in line with theoretical and literature values. Values obtained by the calorimetry method were found to be lower than those of the other two methods, with a greater deviation at lower temperatures than at higher temperatures.
引用
收藏
页码：438 / 442
页数：5
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