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本文报导了在混合稀土金属(Mm)及富镧稀土金属(Ml)为吸氢元素的AB_6型贮氢金属中加入Mn、Al元素部分置Ni,组成MmNi_(5-X)M_X(M:Mn、Al;X:0.25、0.5、0.75、1.0)和MlNi_(3-X)M_X(M:Mn、Al;X:0.25、0.5、0.75、1.0)二类伪二元金属化合物的贮氢特性。绘出了二类合金的一系列等温线和动力学曲线。在所试验的范围内(X≤1),合金仍保持六方晶体结构的单相组织。以Mn或Al部分取代Ni极大地改善了MmNi_5的活化特性,并使平台压丸大幅度降低。又以Mn部分置换Ni时吸氢能力降低很小,是个良好的取代元素。作者认为MmNi_(4.5)Mn_(0.5)和MlNi_(4.75)Al_(0.25)MlNi_(4.5)Mn_(0.5)合金的贮氢性能近于LaNi_5而成本低廉,是种很有实用价值的贮氢材料。
In this paper, Mn is added to AB_6 type hydrogen storage metal mixed with rare earth metal (Mm) and lanthanum-rich rare earth metal (Ml) as hydrogen absorbing element, Ni is partially deposited in the element Al, and MmNi_ (5-X) M_X , Al; X: 0.25,0.5,0.75,1.0) and MlNi_ (3-X) M_X (M: Mn, Al; X: 0.25,0.5,0.75,1.0) pseudo-binary metal compounds. Draw a series of isotherms and kinetic curves of the second type of alloy. Within the range tested (X ≤ 1), the alloy retains the single-phase structure of the hexagonal crystal structure. Partial replacement of Ni with Mn or Al greatly improves the activation characteristics of MmNi_5 and greatly reduces the pellet of the platform. Mn partial replacement of Ni when hydrogen absorption capacity decreased very little, is a good substitute for the element. The authors believe that the hydrogen storage properties of MmNi_ (4.5) Mn_ (0.5) and MlNi_ (4.75) Al_ (0.25) MlNi_ (4.5) Mn_ (0.5) alloys are much lower than that of LaNi_5, which is a very valuable hydrogen storage material.