The spectral emissivity of color metals in pure and oxidized states

被引:7
|
作者
Yamaguchi, T [1 ]
Yamamura, M
Nagasaka, I
Ohnishi, N
Nakai, D
Mizui, H
机构
[1] Chubu Univ, Fac Engn, Dept Mech Engn, Kasugai, Aichi 4878501, Japan
[2] Chubu Univ, Fac Engn, Dept Informat Proc Educ, Kasugai, Aichi 4878501, Japan
[3] Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan
关键词
spectral emissivity; color temperature; radiation pyrometry; temperature measurement; physical property; oxidation;
D O I
10.2320/jinstmet1952.62.12_1197
中图分类号
TF [冶金工业];
学科分类号
0806 ;
摘要
In the present paper, the values of the spectral emissivity of color metals i.e. gold and copper, and copper heated in oxidizing atmospheres are measured at the temperature of 1000 degrees C, just below their melting points, and within the wavelength region from 0.38 to 0.94 mu m. Also the values of the spectral reflectance of gold and copper are measured at room temperature. And the spectral emissivity calculated from this spectral reflectance. Then, experimental results are analyzed by the dispersion formula concerning the free electrons and bound electrons. Thus, the formula can be applied whether wavelength dependency of the spectral emissivity is negative and variable (gold and copper), or positive and nearly constant in the case of copper heated in oxidizing atmosphere.
引用
收藏
页码:1197 / 1203
页数:7
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