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| 快凝合金La(NiMn)5.6的贮氢性能 | |
| 引用本文： | 吴静然,陈文娟,杜金星,罗永春.快凝合金La(NiMn)5.6的贮氢性能[J].承德石油高等专科学校学报,2005,7(1):1-4. |
| 作者姓名： | 吴静然 陈文娟 杜金星 罗永春 |
| 作者单位： | 1. 承德石油高等专科学校,机械工程系,河北,承德,067000 2. 承德石油高等专科学校,组织人事部,河北,承德,067000 3. 兰州理工大学有色金属新材料国家重点实验室,甘肃,兰州,730050 |
| 摘 要： | 借助X-ray及吸放氢性能测试装置研究了非化学计量比快凝合金La(NiMn)5.6的结构和贮氢性能以及A端、B端元素替代对合金的影响,测试了不同温度下合金的PCT曲线.结果表明,快速凝固(35 m/s)条件下合金La(NiMn)5.6均可获得过饱和CaCu5型单相组织.A端以Ce取代La,使平台压力增大,最大吸氢量减小,但滞后降低;B端以Sn取代Ni,改善了合金的活化特性,并使平台降低,吸放氢滞后减小. |
| 关 键 词： | 无钴快凝合金La(NiMn)5.6 贮氢性能 PCT曲线 |
| 文章编号： | 1008-9446(2005)01-0001-04 |
| 修稿时间： | 2004年10月25日 |
Hydrogen Storage Properties of Melt-spinning La(NiMn)5.6 Alloys |
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| WU Jing-ran,CHEN Wen-juan,DU Jin-xing,LUO Yong-chun.Hydrogen Storage Properties of Melt-spinning La(NiMn)5.6 Alloys[J].Journal of Chengde Petroleum College,2005,7(1):1-4. | |
| Authors: | WU Jing-ran CHEN Wen-juan DU Jin-xing LUO Yong-chun |
| Abstract: | Co free over-stoichiometric La(NiMn)_(5.6) alloys were prepared and obtained by non-equilibrium processing of melt spinning(35m/s),and partially replaced by Ce and Sn.The hydriding performance and structure of La(NiMn)_(5.6) hydrogen storage alloys were investigated by pressure-composition isotherms,XRD and atomic parameters.The results of XRD analysis,the alloys La(NiMn)_(5.6) prepared by melt spinning(35m/s) present a single phase with CaCu_5 type,the crystal lattice constants a and c exhibit an anisotropic change.The activation performance partially replaced by Ce,Sn can be improved.The plateau pressure could be controlled by the elements of A site and B site.The substitution of La by Ce leads to an increase of the plateau pressure and a decrease of hydrogen storage capacity.The substitution of Ni by Sn could lower the plateau pressure.In the meantime,the hysteresis decrease. |
| Keywords: | Hydrogen storage alloys Hydrogen Storage Properties PCT curves |
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