CAJ | 학술논문

针对La‐M g‐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‐M g中间合金为原料，利用磁场辅助烧结合成技术制备 La2 MgNi9合金。结果显示，该方法可获得单相 PuNi3型结构的（La ，Mg）Ni3合金；1 T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。
침대La‐M g‐Ni계저경합금제비과정중존재역양화、휘발급성본고등문제，제출채용용염보호용련법제비적La‐M g중간합금위원료，이용자장보조소결합성기술제비 La2 MgNi9합금。결과현시，해방법가획득단상 PuNi3형결구적（La ，Mg）Ni3합금；1 T자장하제비적합금최대흡경용량위1．490％（질량분수），흡방경동역학성능우이；자장대합금적탈부열행위몰유명현영향。
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 La2 MgNi9 alloys .The sintering process was assisted by a strong magnetic field .The XRD results indicates that the single phase for all alloys was PuNi3 type (La ,Mg)Ni3 .The pressure‐composition isotherm (PCT ) results show that the alloys prepared under 1 T magnetic field has the maximal hydriding capacity (1 .490w t% ) .T he alloy show s excellent hydriding/dehydriding kinetics properies . The desorption heat behavior of all alloys have no significant change with the change of magnetic field intensity .