Journal of Hydrogen and New Energy (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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Hydriding and Dehydriding Rates of Magnesium-Nickel Alloy Fabricated by Milling under Hydrogen

수소 분위기에서 밀링에 의해 제조한 마그네슘-니켈 합금의 수소화물 형성 및 분해 속도

  • Song, Myoung-Youp (Division of Advanced Materials Engineering, Department of Hydrogen and Fuel Cells, Research Center of Advanced Materials Development, Engineering Research Institute, Chonbuk National University) ;
  • Baek, Sung-Hwan (Division of Advanced Materials Engineering, Department of Hydrogen and Fuel Cells, Research Center of Advanced Materials Development, Engineering Research Institute, Chonbuk National University) ;
  • Park, Hye-Ryoung (School of Applied Chemical Engineering, Chonnam National University)
  • 송명엽 (전북대학교 신소재공학부) ;
  • 백성환 (전북대학교 신소재공학부) ;
  • 박혜령 (전남대학교 응용화학공학부)
  • Received : 2011.10.24
  • Accepted : 2011.12.27
  • Published : 2011.12.31
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Abstract

A 76.5wt%Mg - 23.5wt%Ni (Mg-23.5Ni) sample was prepared by reactive mechanical grinding (RMG) and its hydriding and dehydriding properties were then investigated. Activation of the Mg-23.5Ni sample was completed only after two hydriding (under 12 bar $H_2$) - dehydriding (under 1.0 bar $H_2$) cycles at 593K. The reactive mechanical grinding of Mg with Ni is considered to facilitate nucleation and shorten diffusion distances of hydrogen atoms. After hydriding - dehydriding cycling, the Mg-23.5Ni sample contained Mg2Ni phase.

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References

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