Evaluation of the Heat Leakage in the Thermal Diffusivity Measurement of Molten Metals by a Laser Flash Method

被引：0
|
作者：
T. Nishi
H. Ohta
H. Shibata
Y. Waseda
机构：
[1] Tohoku University,Graduate School, Department of Materials Processing
[2] Ibaraki University,Department of Materials Science
[3] Tohoku University,Institute of Multidisciplinary Research for Advanced Materials
来源：
International Journal of Thermophysics | 2003年 / 24卷
关键词：
heat loss; laser flash method; molten nickel; numerical analysis; thermal diffusivity;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Evaluation of the radiative and conductive heat loss from a molten metal sample to the cell has been made in order to obtain accurate thermal diffusivities of molten metals at high temperature with a laser flash method. The results suggest that thermal diffusivity values of molten nickel can be determined in the temperature range from 1728 to 1928 K with an uncertainty of ±3% in comparison with case considering only the effect of radiative heat loss. The usefulness of a cell for a laser flash method has been confirmed by applying simulated results to evaluate the heat leakage in the thermal diffusivity measurement of molten metals.
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页码：1735 / 1751
页数：16
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