The transport behavior of hydrogen isotopes in ITER grade tungsten (IG-W) and commercial rolled polycrystalline tungsten (CR-W) was investigated using deuterium gas. Analyses using field-emission scanning electron microscopy revealed that both IG-W and CR-W had a polycrystalline structure, but their surface grain structures were apparently different. The permeability and diffusivity of deuterium in IG-W and CR-W were obtained using a time-dependent gas-phase technique in the temperature range of 650–850°C, being observed to be affected by surface morphology and grain boundaries. Our results in this study were also compared with previous results for polycrystalline W reported by other authors.

使用氘气研究了氢同位素在ITER级钨（IG-W）和商用轧制多晶钨（CR-W）中的传输行为。使用场发射扫描电子显微镜的分析表明，IG-W和CR-W均具有多晶结构，但它们的表面晶粒结构明显不同。使用时变气相技术，在650-850°C的温度范围内，氘在IG-W和CR-W中的渗透性和扩散率得到了观察，受表面形貌和晶界的影响。我们在这项研究中的结果也与其他作者先前报道的多晶W的结果进行了比较。