TY - JOUR
T1 - Hydriding kinetics of nano-phase composite hydrogen storage alloys prepared by mechanical alloying of Mg and MmNi 5-x (CoAlMn) x
AU - Zhu, M
AU - Gao, Y
AU - Che, X. Z.
AU - Yang, Y. Q.
AU - Chung, C. Y.
PY - 2002/1/17
Y1 - 2002/1/17
N2 - 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.
AB - 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.
KW - Hydrogen absorption kinetics
KW - Hydrogen storage alloys
KW - Mechanical alloying
KW - Nanocrystalline alloys
UR - http://www.scopus.com/inward/record.url?scp=0037122516&partnerID=8YFLogxK
UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-0037122516&origin=recordpage
U2 - 10.1016/S0925-8388(01)01517-1
DO - 10.1016/S0925-8388(01)01517-1
M3 - RGC 21 - Publication in refereed journal
SN - 0925-8388
VL - 330-332
SP - 708
EP - 713
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
T2 - Proceedings of the International Symposium on Metal-Hydrogen (MH 2000)
Y2 - 1 October 2000 through 6 October 2000
ER -
