Transactions of the Korean hydrogen and new energy society (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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Change of Hydriding Properties of Gravity Cast Mg-Ni Alloys with Ni Content

Ni 첨가량에 따른 중력 주조 Mg-Ni 합금의 수소화 반응 특성의 변화

  • Yim, C.D. (Materials Technology Department, Korea Institute of Machinery & Materials) ;
  • Moon, Y.M. (Materials Technology Department, Korea Institute of Machinery & Materials) ;
  • You, B.S. (Materials Technology Department, Korea Institute of Machinery & Materials) ;
  • Na, Yeong-Sang (Surface Engineering Department, Korea Institute of Machinery & Materials) ;
  • Bae, Jong-Su (Materials Technology Department, Korea Institute of Machinery & Materials)
  • 임창동 (한국기계연구원 재료연구부) ;
  • 문용민 (한국기계연구원 재료연구부) ;
  • 유봉선 (한국기계연구원 재료연구부) ;
  • 나영상 (한국기계연구원 표면연구부) ;
  • 배종수 (한국기계연구원 재료연구부)
  • Published : 2004.09.30
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Abstract

Magnesium and its alloys have the high potential as hydrogen storage materials because of their highest hydrogen storage capacity, low density and abundant resources. But poor kinetic properties of hydriding and dehydriding and high working temperature have limited their practical applications. In this study, the Mg-Ni binary alloys with different amount of Ni were produced by gravity casting and characterized in order to investigate the relationship between the microstructures and hydriding properties. The maximum hydrogen absorption capacity decreased, but the absorption kinetics increased with Ni content. The difference in the absorption kinetics was resulted from the differences in the sort and shape of primary solid phases and eutectic microstructure.

Keywords

Acknowledgement

Supported by : 수소에너지사업단

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