이상점성 처리된 Mg-3, 6wt%Ni합긍의 수소화 특성평가

이성곤; 하원; 홍태환; 김영직; Sung-Gon Lee; Won Ha; Tae-Whan Hong; Young-Jig Kim

Korean Journal of Materials Research, Vol.12, No.12, 935-940, December, 2002

DOI10.3740/MRSK.2002.12.12.935 Export Citation

이상점성 처리된 Mg-3, 6wt%Ni합긍의 수소화 특성평가

Evaluation of Hydrogenation Properties of Thixotropic Mg-3, 6wt%Ni Hydrogen Absorbing Alloys

이성곤^†, 하원, 홍태환¹, 김영직

성균관대학교 대학원 신소재공학과
¹국립충주대학교

Sung-Gon Lee^†, Won Ha, Tae-Whan Hong¹, and Young-Jig Kim

Dept. of Advanced Materials Engineering, Sungkyunkwan University, Gyeonggi-do, 440-746, Korea
¹Dept. of Mat. Sci & Eng/Nano Technology Lab., Chungju Nat'l Univ., Chungju, Chungbuk 380-702, Korea

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Magnesium-3, 6wt% Nickel alloys were fabricated by Rotation-Cylinder Method(RCM) in ambient atmosphere. The alloys were divided into two different heat-treating conditions, as-cast and thixotropic treated. Thixotropic heat treatment enhances the separation of primary hydride former of Mg and the catalytic phase of Mg 2 Ni. Hydrogenation properties of the each alloy were evaluated and compared by PCI(Pressure-Composition Isotherm) measurement. The maximum hydrogen capacity and the reversible capacity of as -cast Mg-6wt% Ni alloy were 5.2wt% and 3.8wt% at 623k, respectively.

Keywords:Thixotropic;PCI;hydrogen capacity;Rotation-Cylinder Method

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