On the Viscosity of Liquid Selenium
On the Viscosity of Liquid Selenium
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关于液态硒的粘度
DOI：
10.1246/bcsj.42.1025
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发表时间：
1969
影响因子：
4
通讯作者：
T. Shirai
中科院分区：
文献类型：
--
作者：
S. Hamada;Naosato Yoshida;T. Shirai
使用乌氏倾斜式粘度计在235℃至305℃的温度范围内测量液体硒和部分氯化液体硒的粘度。 “特性”粘度 η0 是通过将不同剪切速率的粘度 ηθ 值外推至零剪切速率来估计的。液体硒在 235、245、255、265、285 和 305°C 时的“特性”粘度估计分别为 20.18、13.46、9.11、6.32、3.67 和 2.30 泊。氯化液硒的粘度随着氯含量的增加而降低，但在氯含量为0.0125%时，粘度变化不连续，然后线性下降。液态硒粘性流的表观活化能估计为 17.9 kcal/mol。与粘度的情况一样，氯化硒粘性流的表观活化能在氯含量约为0.0125%时不连续变化。该系列的平均链长...
The viscosities of liquid selenium and partially-chlorinated liquid selenium were measured in the temperature range from 235°C to 305°C using an Ubbelohde-type tilting viscometer. The “intrinsic” viscosities, η0, were estimated by extrapolating the values of the viscosities, ηθ, of various rates of shear to a zero rate of shear. The “intrinsic” viscosities of the liquid selenium were estimated to be 20.18, 13.46, 9.11, 6.32, 3.67 and 2.30 poise at 235, 245, 255, 265, 285, and 305°C respectively. The viscosities of the chlorinated liquid selenium decreased with an increase in the chlorine content, but they varied discontinuously at a chlorine content of 0.0125% and then decreased linearly. The apparent activation energy for the viscous flow of the liquid selenium was estimated to be 17.9 kcal/mol. The apparent activation energies for the viscous flow of the chlorinated selenium varied discontinuously at a chlorine content of about 0.0125%, as in the case of the viscosity. The average-chain length of the se...