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The synthesis and hydrogen storage properties of Mg2Ni substituted with Cu, Co

Published online by Cambridge University Press:  31 January 2011

Yu’an Chen*
Affiliation:
College of Materials Science and Engineering, Chongqing University, Chongqing, 400044, People’s Republic of China; and National Engineering Research Center for Magnesium Alloys, Chongqing University, Chongqing, 400044, People’s Republic of China
Hua Huang*
Affiliation:
College of Materials Science and Engineering, Chongqing University, Chongqing, 400044, People’s Republic of China; and National Engineering Research Center for Magnesium Alloys, Chongqing University, Chongqing, 400044, People’s Republic of China
Jie Fu
Affiliation:
College of Materials Science and Engineering, Chongqing University, Chongqing, 400044, People’s Republic of China; and National Engineering Research Center for Magnesium Alloys, Chongqing University, Chongqing, 400044, People’s Republic of China
Qing Guo
Affiliation:
College of Materials Science and Engineering, Chongqing University, Chongqing, 400044, People’s Republic of China
Fusheng Pan
Affiliation:
College of Materials Science and Engineering, Chongqing University, Chongqing, 400044, People’s Republic of China; and National Engineering Research Center for Magnesium Alloys, Chongqing University, Chongqing, 400044, People’s Republic of China
Shiping Deng
Affiliation:
College of Materials Science and Engineering, Chongqing University, Chongqing, 400044, People’s Republic of China; and National Engineering Research Center for Magnesium Alloys, Chongqing University, Chongqing, 400044, People’s Republic of China
Jiaming Li
Affiliation:
College of Materials Science and Engineering, Chongqing University, Chongqing, 400044, People’s Republic of China; and National Engineering Research Center for Magnesium Alloys, Chongqing University, Chongqing, 400044, People’s Republic of China
Guangming Zhao
Affiliation:
Chongqing Instrument Materials Research Institute, Chongqing, 400700, People’s Republic of China
*
b) e-mail: [email protected]This paper was selected as an Outstanding Symposium Paper for the 2008 International Materials Research Conference, Symposium H.
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Abstract

Mg2Ni1-xCux (x = 0, 0.2, 0.4) and Mg2Ni1-yCoy (y = 0, 0.2, 0.4) were successfully synthesized via two steps: induction melting and then ball milling. The component and microstructure of the alloys were determined with x-ray diffraction (XRD) and scanning electron microscopy/x-ray energy-dispersive spectrometry (SEM/XEDS). Mg2Ni phase was observed in all 5 alloys. When the amount of Cu was increased, it led to the formation of phase from Mg2Cu to Cu11Mg10Ni9. Co2Mg was detected in the Co-containing alloys. The hydrogen absorption/desorption properties were tested with p-C-T measurement apparatus, and the results showed that the gaseous storage properties of the alloys were improved by the addition of Cu or Co.

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Copyright
Copyright © Materials Research Society 2009

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