Fabrication of Mg<SUB>2</SUB>NiH<I><SUB>x</SUB></I> from Mg and Ni Chips by Hydrogen Induced Planetary Ball Milling

DOI Web Site Web Site 1 Citations 30 References
  • Hong T. W.
    School of Mater. Sci. and Eng., SungKyunKwan University
  • Kim S. K.
    School of Mater. Sci. and Eng., SungKyunKwan University
  • Park G. S.
    Samsung Advanced Institute of Technology, AE Lab
  • Kim Y. J.
    School of Mater. Sci. and Eng., SungKyunKwan University

Bibliographic Information

Other Title
  • Fabrication of Mg2NiHx from Mg and Ni Chips by Hydrogen Induced Planetary Ball Milling

Search this article

Abstract

For manufacturing Mg2NiHx hydrogen absorbing materials economically, Mg and Ni chips were mechanically alloyed under 2 MPa hydrogen atmosphere by planetary ball milling. The homogeneous Mg2NiHx was formed after 72 h mechanical alloying (MA) in both 30:1 and 66:1 BCR (ball to chips mass ratio). The maximum absorbed hydrogen content of the Mg2NiHx reached 3.9 mass% after 48 h MA in 30:1 BCR and the dehydriding reaction of them started around 473∼503 K from the result of TG analysis. On the other hand, in 66:1 BCR, the fully hydrogenated alloys were obtained after 96 h MA, the total hydrogen content was 2.25 mass% and the dehydriding temperature was around 453∼493 K. The composite phase obtained after 96 h MA in 66:1 BCR is composed of the nanocrystalline and amorphous phases, the structure of which seems to be the reason of the improved hydriding and dehydriding kinetics. It was deduced that the conditions of BCR affected strongly the synthesis of the Mg2NiHx.

Journal

Citations (1)*help

See more

References(30)*help

See more

Keywords

Details 詳細情報について

Report a problem

Back to top