Damage process of high purity tungsten coatings by hydrogen beam heat loads
Damage process of high purity tungsten coatings by hydrogen beam heat loads
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氢束热载荷对高纯钨涂层的损伤过程
DOI：
10.1016/j.jnucmat.2004.10.103
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发表时间：
2005
影响因子：
3.1
通讯作者：
M. Okumiya
中科院分区：
文献类型：
--
作者：
S. Tamura;K. Tokunaga;N. Yoshida;M. Taniguchi;K. Ezato;K. Sato;S. Suzuki;M. Akiba;Y. Tsunekawa;M. Okumiya
为了研究热负荷和氢辐照的协同效应，对高纯CVD钨涂层进行了氢束和可比电子束的循环热负荷试验。通过改变热通量，研究了表面改性作为峰值温度的函数。扫描电子显微镜分析表明，氢束对表面的损伤比电子束严重。在氢束的情况下，在300 °C至1600 °C的所有峰值温度下，表面都发生了开裂。这些结果表明，注入的氢诱导CVD-钨涂层的脆化。
To investigate the synergistic effects of heat load and hydrogen irradiation, cyclic heat load tests with a hydrogen beam and a comparable electron beam were performed for high purity CVD-tungsten coatings. Surface modification was examined as a function of the peak temperature by changing the heat flux. Scanning Electron Microscopy analysis showed that the surface damage caused by the hydrogen beam was more severe than that by the electron beam. In the hydrogen beam case, cracking at the surface occurred at all peak temperatures examined from 300 °C to 1600 °C. These results indicate that the injected hydrogen induces embrittlement for the CVD-tungsten coating.