Hydriding kinetics of nano-phase composite hydrogen storage alloys prepared by mechanical alloying of Mg and MmNi 5-x (CoAlMn) x

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review

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Author(s)

Detail(s)

Original languageEnglish
Pages (from-to)708-713
Journal / PublicationJournal of Alloys and Compounds
Volume330-332
Publication statusPublished - 17 Jan 2002

Conference

TitleProceedings of the International Symposium on Metal-Hydrogen (MH 2000)
PlaceAustralia
CityNoosa Heads, QLD
Period1 - 6 October 2000

Abstract

Nano-phase composite hydrogen storage alloys were prepared by mechanical alloying of Mg and MmNi 5-x(CoAlMn) x. The hydrogen absorption kinetics of the nano-phase composite and melted MmNi 5-x(CoAlMn) x alloys were measured under isobaric conditions at different temperatures. The obtained hydrogen absorption kinetic curves were fitted using various rate equations to reveal the mechanism of the hydriding reaction process. The results showed that the hydriding reaction kinetics of the nano-phase composite and melted MmNi 5-x(CoAlMn) x were different. For the nano-phase composite, the hydriding reaction was in agreement with an auto-catalysis process. For the melted MmNi 5-x(CoAlMn) x, the hydride reaction was in agreement with a nucleation and growth process. The difference in hydriding kinetics of the two alloys is discussed based on the fitting results and the microstructural characteristics of the alloys. © 2002 Published by Elsevier Science B.V.

Research Area(s)

  • Hydrogen absorption kinetics, Hydrogen storage alloys, Mechanical alloying, Nanocrystalline alloys

Citation Format(s)

Hydriding kinetics of nano-phase composite hydrogen storage alloys prepared by mechanical alloying of Mg and MmNi 5-x (CoAlMn) x. / Zhu, M; Gao, Y; Che, X. Z.; Yang, Y. Q.; Chung, C. Y.

In: Journal of Alloys and Compounds, Vol. 330-332, 17.01.2002, p. 708-713.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review