Microstructure and novel hydrogen storage properties of melt-spun Mg–Ni–Mm alloys
Microstructure and novel hydrogen storage properties of melt-spun Mg–Ni–Mm alloys
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DOI：
10.1016/j.jallcom.2008.10.122
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发表时间：
2009-05
影响因子：
6.2
通讯作者：
Y. Wu;M. Lototsky;J. K. Solberg;V. Yartys;W. Han;S. Zhou
中科院分区：
文献类型：
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作者：
Y. Wu;M. Lototsky;J. K. Solberg;V. Yartys;W. Han;S. Zhou
快淬Mg-10 Ni-2 Mm（at.%）合金的非氢化和氢化组织及储氢性能合金进行了研究。通过提高凝固速率，熔纺薄带的H-吸收/脱附反应的动力学大大改善，可能是由于在相当数量的纳米尺寸的晶粒中的快速氢扩散。RS处理导致Mg 2NiH 4的高温立方相和Mg 2Ni的不完全氢化导致的固溶体氢化物相Mg 2NiH 0. 3的形成。最大储氢量为5.1wt.%得到了H。以最高固化速率固化的样品由于纳米尺寸颗粒分布的高度均匀性而显示出最窄的解吸温度范围（在真空TDS期间）。
The non-hydrogenated and hydrogenated microstructure and hydrogen storage properties of a melt-spun Mg–10Ni–2Mm (at.%) alloy have been studied. By increasing the solidification rate, the kinetics of the H-absorption/desorption reactions of the melt-spun ribbons was greatly improved, probably due to fast hydrogen diffusion in considerably amounts of nano-sized grains. RS processing resulted in the formation of the high-temperature cubic modification of Mg2NiH4and the solid solution hydride phase Mg2NiH0.3due to incomplete hydrogenation of Mg2Ni. A maximum hydrogen storage capacity of 5.1wt.% H was obtained. The samples that were solidified at the highest solidification rate, displayed the narrowest desorption temperature range (during vacuum TDS) due to a high uniformity of the nano-sized particle distribution.