| 由FeV80合金制备的V28Ti32Cr28Mn6Fe6合金的组织结构及吸放氢特性 |
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| 引用本文： | 王林元,段蜀波. 由FeV80合金制备的V28Ti32Cr28Mn6Fe6合金的组织结构及吸放氢特性[J]. 稀有金属材料与工程, 2011, 40(3): 462-465 |
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| 作者姓名： | 王林元 段蜀波 |
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| 作者单位： | 西南石油大学,四川,成都,610500 |
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| 摘 要： | 通过XRD、SEM/EDS及PCT测试研究了由FeV80合金制备的V28Ti32Cr28Mn6Fe6合金的组织结构及吸放氢特性。该合金由bcc相和C14Laves第二相构成。由于合金中氧含量(0.83%,质量分数)较高,因而吸放氢容量较低,动力学性能较差。通过添加一定量的稀土元素La(1%～10%,质量分数),可显著降低合金中的氧含量,从而提高其动力学性能和吸放氢容量。当La的添加量达到4.0%时,合金具有最佳的吸放氢性能,吸氢量达到3.62%,放氢量达到2.13%;合金氢化物的生成焓为(-40.0±1)kJ/mol·H2。
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| 关 键 词： | 贮氢材料 钒基贮氢合金 FeV80合金 吸放氢特性 |
| 收稿时间： | 2010-10-28 |
Microstructure and Absorption/Desorption Properties of V28Ti32Cr28Mn6Fe6 Alloy Prepared from FeV80 Alloy |
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| Wang Linyuan and Duan Shubo. Microstructure and Absorption/Desorption Properties of V28Ti32Cr28Mn6Fe6 Alloy Prepared from FeV80 Alloy[J]. Rare Metal Materials and Engineering, 2011, 40(3): 462-465 |
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| Authors: | Wang Linyuan and Duan Shubo |
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| Affiliation: | Southwest Petroleum University, Chengdu 610500, China |
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| Abstract: | The phase,microstructure and absorption/desorption properties of V28Ti32Cr28Mn6Fe6 alloy prepared from FeV80 alloy were researched by XRD,SEM/EDS and PCT measurement.The prepared alloy consists of two phases,bcc main phase and C14 Laves minor phase.This alloy shows low absorption/desorption capacities and poor absorption kinetics due to the high oxygen content of 0.83wt% originated from the FeV80 source.After addition of rare-earth metal of La,the oxygen content is obviously decreased,and the mechanical pro... |
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| Keywords: | hydrogen storage materials V-based hydrogen storage alloy FeV80 alloy absorption/desorption properties |
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