Hydrogen Isotope Effects in Ti鈥揤鈥揅r Alloy Hydrides

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• 作者：Yongbin Yang ; Deli Luo ; Wensheng Guo ; Xiaoqiu Ye
• 刊名：Journal of Physical Chemistry C
• 出版年：2015
• 出版时间：February 19, 2015
• 年：2015
• 卷：119
• 期：7
• 页码：3481-3487
• 全文大小：343K
• ISSN：1932-7455

文摘

The hydrogen isotope effects are systematically investigated by measuring the equilibrium separation factor (伪) in Ti鈥揤鈥揅r alloys with mixed H鈥揇 systems at 30 掳C. We find that all of the alloys are BCC structures except for TiCr. Interestingly, 伪 displays a parabolic relation with respect to the number of valence electrons per metal atom (e/a) for V 40 at %. Moreover, significant inverse isotope effects appear at e/a = 4.6鈥?.2 (伪 > 1.3), and 伪 reaches its maximum value at e/a = 5.0 (伪 = 1.47). The lattice constants dependent on 伪 are studied by adjusting the vanadium content at e/a = 5.0, revealing a linear decrease of 伪 as a function of the lattice constants. All the results indicate that the hydrogen isotope effects can be detected in Ti鈥揤鈥揅r alloys with e/a and lattice constants.