摘要
针对La-Mg-Ni系储氢合金制备过程中存在易氧化、挥发及成本高等问题,提出采用熔盐保护熔炼法制备的La-Mg中间合金为原料,利用磁场辅助烧结合成技术制备La2MgNi9合金。结果显示,该方法可获得单相PuNi3型结构的(La,Mg)Ni3合金;1T磁场下制备的合金最大吸氢容量为1.490%(质量分数),吸放氢动力学性能优异;磁场对合金的脱附热行为没有明显影响。
In order to solve the problems existing in the preparation process of La-Mg-Ni alloy,such as oxidation and volatilization,the La-Mg master alloy was prepared by a smelting method with protection by molten salt and used as raw material to sintering synthesis La2MgNi9 alloys.The sintering process was assisted by a strong magnetic field.The XRD results indicates that the single phase for all alloys was PuNi3type(La,Mg)Ni3.The pressure-composition isotherm(PCT)results show that the alloys prepared under 1T magnetic field has the maximal hydriding capacity(1.490wt%).The alloy shows excellent hydriding/dehydriding kinetics properies.The desorption heat behavior of all alloys have no significant change with the change of magnetic field intensity.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2015年第17期17111-17114,共4页
Journal of Functional Materials
基金
国家自然科学基金资助项目(51464008)
贵州省教育厅重点实验室建设任务资助项目(KY[2012]004)
关键词
储氢
中间合金
磁场
吸放氢性能
hydrogen storage
master alloy
magnetic field
hydriding/dehydriding characteristics
