Diffusion of hydrogen and deuterium in Nb and Ta at high concentrations
Diffusion of hydrogen and deuterium in Nb and Ta at high concentrations
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高浓度 Nb 和 Ta 中氢和氘的扩散
DOI：
10.1007/bf01354833
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发表时间：
1978
期刊：
影响因子：
--
通讯作者：
G. Alefeld
中科院分区：
文献类型：
--
作者：
H. Bauer;J. Völkl;J. Tretkowski;G. Alefeld
用Gorsky效应测量了在0 ~ 40%H或D/Nb或Ta范围内，H和D在Nb和Ta中α相和α′相的扩散系数随浓度的变化关系。由于这种方法允许同时确定的热力学因素，示踪剂扩散系数可以从数据中提取。已发现所有四个系统的活化能作为浓度的函数的增加。而对于Ta的同位素依赖性的扩散系数继续存在于高浓度下，它令人惊讶地消失Nb。
The concentration dependence of the diffusion coefficient of H and D in Nb and Ta in theα andα′ phases has been measured between 0 and 40% H or D/Nb or Ta by the Gorsky effect. Since this method allows to determine simultaneously the thermodynamic factor, the tracer-diffusion coefficient can be extracted from the data. An increase of the activation energy as a function of concentration has been found for all four systems. Whereas for Ta the isotope dependence of the diffusion coefficients continues to exist at high concentrations it surprisingly disappears for Nb.