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Deuterium transport in ITER-grade tungsten
Journal of Nuclear Materials ( IF 2.8 ) Pub Date : 2020-11-14 , DOI: 10.1016/j.jnucmat.2020.152675
W.J. Byeon , S.J. Noh

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.



中文翻译:

ITER级钨的氘迁移

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。

更新日期:2020-11-15
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