Korean Journal of Materials Research (한국재료학회지)

Materials Research Society of Korea (한국재료학회)
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The Effects of Amorphization on Hydrogen Absorption Properties of Zr57V36Fe7 Getter alloy

게터용 Zr57V36Fe7 합금의 수소 흡수특성에 미치는 비정질화의 영향

  • Park Je-Shin (Minerals and materials processing Division, Materials Development Group, Korea Institute of Geoscience, Mining and Materials) ;
  • Suh Chang-Youl (Minerals and materials processing Division, Materials Development Group, Korea Institute of Geoscience, Mining and Materials) ;
  • Kim Won-Baek (Minerals and materials processing Division, Materials Development Group, Korea Institute of Geoscience, Mining and Materials)
  • 박제신 (한국지질자원연구원 자원활용소재연구부 소재개발연구실) ;
  • 서창열 (한국지질자원연구원 자원활용소재연구부 소재개발연구실) ;
  • 김원백 (한국지질자원연구원 자원활용소재연구부 소재개발연구실)
  • Published : 2005.12.01
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Abstract

The hydrogen sorption speeds of $Zr_{57}V_{36}Fe_7$ amorphous alloy and its crystallized alloys were evaluated at room temperature $Zr_{57}V_{36}Fe_7$ amorphous alloy was prepared by ball milling. The amorphous alloy was crystallized through two stages. Initially, $\alpha-Zr$ solid solution was appeared from the amorphous phase. Two cubic Laves compounds were precipitated afterwards from the remained amorphous and from excessively saturated solid solution at higher temperature. The hydrogen sorption speed of the partially crystallized alloy was higher than that of amorphous. The enhanced sorption speed of partially crystallized alloy was explained in terms of surface oxygen stability which has been known to retard the activation of amorphous alloys. The retardation could be reduce by crystallization process resulting in the observed increase in sorption property.

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