Effect of Cr content on hydrogen storage properties for Ti-V-based BCC-phase alloys
Effect of Cr content on hydrogen storage properties for Ti-V-based BCC-phase alloys
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DOI：
10.1016/j.ijhydene.2004.01.015
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发表时间：
2004-10
影响因子：
7.2
通讯作者：
Xuebin Yu;Jinzhou Chen;Zhongdao Wu;B. Xia;Naixin Xu
中科院分区：
文献类型：
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作者：
Xuebin Yu;Jinzhou Chen;Zhongdao Wu;B. Xia;Naixin Xu
研究了Ti-25V−xCr -(35−x)Mn合金的相结构和吸氢解吸性能。结果表明，Cr含量的增加有利于合金形成单一的bcc相结构，使合金的吸氢能力增加，吸氢平台平坦。Ti-25V−xCr -(35−x)Mn体系中吸氢的平台斜率与间隙部位的应变能密切相关，在x=10处达到最小值，在此浓度处形成一个明显的平台。合金的最大储氢量为3.99 wt %，有效储氢量为2.44 wt %。
The phase structures and hydrogen absorption–desorption properties of Ti–25V−xCr–(35−x)Mn alloys were investigated. It was found that the increase of Cr content in the alloys is effective for obtaining a single BCC-phase structure, which results in an increasing hydrogen capacity and a flat hydrogen sorption plateau. The plateau slope of hydrogen sorption in the Ti–25V−xCr–(35−x)Mn system is closely correlated with the strain energy of interstitial site, exhibiting minima at x=10 at which concentration a well-defined plateau is formed. The maximum and effective hydrogen storage capacities among studied alloys are 3.99 and 2.44 wt % , respectively.