Microstructure and hydrogen absorption properties of nano-phase composite prepared by mechanical alloying of MmNi5-x(CoAlMn)x and Mg
Research output: Journal Publications and Reviews (RGC: 21, 22, 62) › 21_Publication in refereed journal › peer-review
Author(s)
Detail(s)
Original language | English |
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Pages (from-to) | 531-535 |
Journal / Publication | Journal of Alloys and Compounds |
Volume | 293 |
Publication status | Published - 20 Dec 1999 |
Conference
Title | Proceedings of the 1998 International Symposium on Metal-Hydrogen Systems - Fundamentals and Applications (MH98) |
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City | Hangzhou, China |
Period | 4 - 9 October 1998 |
Link(s)
Abstract
In this work high energy ball milling was used to prepare composite hydrogen storage alloy in the MmNi5-xMx-Mg system. X-ray diffraction and TEM analysis were used to characterize the microstructure of the composite alloy obtained by ball milling. It has been shown that the grain size of MmNi5-xMx and Mg components were reduced to nanometre range after about 20 h of milling. Besides, a Mm2Mg17 phase of nanometre size was also formed in the milling process. Thus, a composite alloy, referred to as nano-phase composite here, composed of MmNi5-xMx, Mg and Mm2Mg17 phase of nanometre size was obtained. Hydrogen storage behaviour of the nano-phase composite was compared with that of conventional MmNi5-xMx alloy by measuring PCT and kinetics. It showed that the hydrogen absorption properties were improved.
Citation Format(s)
Microstructure and hydrogen absorption properties of nano-phase composite prepared by mechanical alloying of MmNi5-x(CoAlMn)x and Mg. / Zhu, M.; Zhu, W. H.; Chung, C. Y.; Che, Z. X.; Li, Z. X.
In: Journal of Alloys and Compounds, Vol. 293, 20.12.1999, p. 531-535.Research output: Journal Publications and Reviews (RGC: 21, 22, 62) › 21_Publication in refereed journal › peer-review