First-principles calculations of transition metal solute interactions with hydrogen in tungsten
First-principles calculations of transition metal solute interactions with hydrogen in tungsten
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钨中过渡金属溶质与氢相互作用的第一性原理计算
DOI:
10.1088/0029-5515/56/2/026004
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发表时间:
2016-02
期刊:
影响因子:
3.3
通讯作者:
Luo G. -N.
中科院分区:
文献类型:
--
作者:
Kong Xiang-Shan;Wu Xuebang;Liu C. S.;Fang Q. F.;Hu Q. M.;Chen Jun-Ling;Luo G. -N.
We have performed systematic first-principles calculations to predict the interaction between transition metal (TM) solutes and hydrogen in the interstitial site as well as the vacancy in tungsten. We showed that the site preference of the hydrogen atom is significantly influenced by the solute atoms, which can be traced to the charge density perturbation in the vicinity of the solute atom. The solute-H interactions are mostly attractive except for Re, which can be well understood in terms of the competition between the chemical and elastic interactions. The chemical interaction dominates the solute-H interaction for the TM solutes with a large atomic volume and small electronegativity compared to tungsten, while the elastic interaction is primarily responsible for the solute-H interaction for the TM solutes with a small atomic volume and large electronegativity relative to tungsten. The presence of a hydrogen atom near the solute atom has a negative effect on the binding of other hydrogen atoms. The large positive binding energies among the solute, vacancy and hydrogen suggest that they would easily form a defect cluster in tungsten, where the solute-vacancy and vacancy-H interaction contribute greatly while the solute-H interaction contributes a little. Our result provides a sound theoretical explanation for recent experimental phenomena of hydrogen retention in the tungsten alloy and further recommends a suitable W–Re–Ta ternary alloy for possible plasma-facing materials (PFMs) including the consideration of the hydrogen retention.
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DOI:
10.15017/27087
发表时间:
2010-09
期刊:
Reports of Research Institute for Applied Mechanics,Kyushu University
影响因子:
--
作者:
K. Ohsawa;大澤 一人;Junya Goto;後藤 準也;Masahiro Yamakami;山上 真広;M. Yamaguchi;山口 正剛;M. Yagi
通讯作者:
K. Ohsawa;大澤 一人;Junya Goto;後藤 準也;Masahiro Yamakami;山上 真広;M. Yamaguchi;山口 正剛;M. Yagi
DOI:
10.1632/s0030812900174759
发表时间:
1995-05
期刊:
PMLA/Publications of the Modern Language Association of America
影响因子:
--
作者:
D. Batani;S. Baton;A. Casner;S. Depierreux;M. Hohenberger;O. Klimo;M. Koenig;C. Labaune;X. Ribeyre;C. Rousseaux;G. Schurtz;W. Theobald;V. Tikhonchuk
通讯作者:
D. Batani;S. Baton;A. Casner;S. Depierreux;M. Hohenberger;O. Klimo;M. Koenig;C. Labaune;X. Ribeyre;C. Rousseaux;G. Schurtz;W. Theobald;V. Tikhonchuk
影响因子:
9.4
作者:
Counts, W. A.;Wolverton, C.;Gibala, R.
通讯作者:
Gibala, R.
影响因子:
3.7
作者:
Peitao Liu;Weiwei Xing;Xiyue Cheng;Dianzhong Li;Yiyi Li;Xing-Qiu Chen
通讯作者:
Peitao Liu;Weiwei Xing;Xiyue Cheng;Dianzhong Li;Yiyi Li;Xing-Qiu Chen
影响因子:
1.2
作者:
David A. Miller;T. Langdon
通讯作者:
David A. Miller;T. Langdon