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http://dx.doi.org/10.3740/MRSK.2006.16.2.116

Effects of Ball Milling on the Hydrogen Sorption Properties of Zr57V36Fe7 Getter Alloy  

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)
Shim, Gun-Choo (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)
Publication Information
Korean Journal of Materials Research / v.16, no.2, 2006 , pp. 116-122 More about this Journal
Abstract
The effects of milling time in argon and hydrogen atmospheres on the hydrogen sorption speed of a getter alloy, $Zr_{57}V_{36}Fe_{7}$, was studied. The hydrogen sorption speed of milled alloys was evaluated at room temperature. In argon, as the oxygen content increased with milling time, the hydrogen sorption speed decreased accordingly. In hydrogen, on the other hand, the oxygen content decreased at first with milling time but started increasing after 5 hrs of milling time. Similar to the case of argon, however, the hydrogen sorption speed changed exactly in the opposite direction with the oxygen content, exhibiting the maximum rate at 5 hrs. These results suggest that in both atmospheres the hydrogen sorption speeds are inversely related with the oxygen contents.
Keywords
Non-Evaporation Getter(NEG); Hydrogen sorption speed; Surface area; Oxygen content;
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