Influence of the substitution of La for Mg on the microstructure and hydrogen storage characteristics of Mg20-xLaxNi10 (x=0-6) alloys
Influence of the substitution of La for Mg on the microstructure and hydrogen storage characteristics of Mg20-xLaxNi10 (x=0-6) alloys
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DOI：
10.1016/j.ijhydene.2008.11.082
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发表时间：
2009-02-01
影响因子：
7.2
通讯作者：
Wang, Xin-lin
中科院分区：
文献类型：
--
作者：
Ren, Hui-ping;Zhang, Yang-huan;Wang, Xin-lin
为了增强Mg2Ni型储氢合金的玻璃形成能力，将合金中的Mg部分替换为La。通过铸造和快速淬火制备了Mg20-xLaxNi10(x=0、2、4、6)合金。通过 XRD、SEM 和 HRTEM 研究了铸态和淬火合金的组织和形貌。结果发现，淬火后的无La合金中没有形成非晶相。但含有 La 的淬火合金保留了主要的非晶相，证实以 La 替代 Mg 显着增强了合金的玻璃形成能力。当La含量x
In order to enhance the glass forming ability of the Mg2Ni-type hydrogen storage alloy, the Mg in the alloy was partially substituted by La. The alloys Mg20-xLaxNi10 (x = 0, 2, 4, 6) were prepared by casting and rapid quenching. The structures and morphologies of the as-cast and the quenched alloys were studied by XRD, SEM and HRTEM. It was found that no amorphous phase was formed in the as-quenched La-free alloy. But the as-quenched alloys containing La held a major amorphous phase, confirming that the substitution of La for Mg significantly enhances the glass forming ability of the alloys. When La content x