Abstract Hydrogen isotope exchange behavior on carbon (C)- tungsten (W) mixed material layer on W was studied as a function of gas exposure time and temperature. It was found that hydrogen isotope exchange enhanced the reduction of residual hydrogen effectively compared by only heating. The temperature dependence showed that hydrogen isotope exchange was the most effective at 523 K and above 573 K, thermal annealing reduced the total hydrogen isotope retention. It can be said that hydrogen isotope replacement is efficient to remove retained tritium on the surface region of mixture layer.

中文翻译：

---

气体暴露在钨上的 CW 混合材料层表面的氢同位素交换

摘要 研究了 W 上碳 (C)-钨 (W) 混合材料层的氢同位素交换行为随气体暴露时间和温度的变化。发现与仅通过加热相比，氢同位素交换有效地增强了残留氢的减少。温度依赖性表明氢同位素交换在 523 K 和高于 573 K 时最有效，热退火降低了总氢同位素保留。可以说氢同位素置换可以有效去除混合层表面区域的残留氚。