Interaction of H with stacking fault in W(111) film: A possible formation mechanism of H bubbles
Interaction of H with stacking fault in W(111) film: A possible formation mechanism of H bubbles
复制标题
H 与 W(111) 薄膜中堆垛层错的相互作用:H 气泡的可能形成机制
DOI:
10.1039/c3ra45099f
复制
发表时间:
2014-01
期刊:
影响因子:
3.9
通讯作者:
Pan, B. C.
中科院分区:
文献类型:
--
作者:
Ding, W. Y.;He, H. Y.;Pan, B. C.
The behavior of H atoms near a stacking fault in W(111) surface is extensively studied based on first-principles density functional theory calculations. We find that H near the stacking fault can be captured and trapped in this defect. These trapped H atoms significantly weaken and even break the W–W bonds in the stacking fault, inducing accumulation of more hydrogen atoms in the stacking fault. Our calculations predict the accommodating capacity of the stacking fault for H to be larger than 3.4 × 1015 cm−2, consistent with the experimentally observed H blistering in W-based fusion reactor materials.
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