Hydrogen permeation in metals near room temperature by a tritium tracer technique
Hydrogen permeation in metals near room temperature by a tritium tracer technique
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DOI：
10.1016/j.jnucmat.2010.12.116
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发表时间：
2011-10
影响因子：
3.1
通讯作者：
T. Ikeda;T. Otsuka;T. Tanabe
中科院分区：
文献类型：
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作者：
T. Ikeda;T. Otsuka;T. Tanabe
在聚变堆中，氚在结构材料中的滞留和渗透是非常重要的安全问题。迄今为止，大多数氢在金属中扩散和渗透的数据都局限于相当高的温度，特别是在室温（RT）附近的高Z金属中没有数据。我们试图观察气态氢渗透通过金属近RT应用氚示踪剂技术，这是一个非常强大的工具来检测相当少量的氢（氚）的液体闪烁计数（LSC）方法。在证实了纯Ni中扩散系数和渗透系数测定方法的可靠性后，将其应用于RT附近的W中氢渗透，测定了氢在W中的扩散系数和渗透系数，
In a fusion reactor, tritium retention and permeation in structure materials are very important safety concerns. Most data for diffusion and permeation of hydrogen in metals so far available have been limited for rather higher temperatures and, in particular, no data are available for high-Z metals near room temperature (RT). We have tried to observe gaseous hydrogen permeation through metals near RT applying a tritium tracer technique, which is a very powerful tool to detect quite small amount of hydrogen (tritium) by a liquid scintillation counting (LSC) method. After confirming the reliability of the method for the determination of diffusion and permeation coefficients in pure Ni, it was applied to hydrogen permeation in W near RT, and diffusion and permeation coefficients of hydrogen in W were determined, and