TY - JOUR
T1 - Structure and hydrogen absorption property of Mg2Ni-Ti alloy powders prepared by mechanical alloying
AU - Lin, C. K.
AU - Wang, C. K.
AU - Lin, H. C.
AU - Lee, P. Y.
PY - 2005
Y1 - 2005
N2 - In the present study, pure Mg, Ni, and Ti powder mixtures were mechanically alloyed as compositions of (Mg2Ni)100-xTix (x=0, 2.5, 5, 7.5 or 10 respectively). The structure evolution of as-milled powders were examined by X-ray diffraction and synchrotron X-ray absorption spectroscopy. For all compositions investigated, nanocrystalline (Mg 2Ni)100-xTix alloy powders were synthesized at the end of milling. The hydrogen absorption properties of the 15h as-milled powders were evaluated by a Sieverts type apparatus at a temperature of 300, 325 and 350°C respectively. Improvement of the hydrogen absorption properties was observed with the titanium additions. At a temperature of 350°C and a H2 pressure of 50 atm, the (Mg2Ni)95Tis as-milled powders exhibited a maximum hydrogen absorption value and reversible content of 3.88 and 3.01 wt.% respectively.
AB - In the present study, pure Mg, Ni, and Ti powder mixtures were mechanically alloyed as compositions of (Mg2Ni)100-xTix (x=0, 2.5, 5, 7.5 or 10 respectively). The structure evolution of as-milled powders were examined by X-ray diffraction and synchrotron X-ray absorption spectroscopy. For all compositions investigated, nanocrystalline (Mg 2Ni)100-xTix alloy powders were synthesized at the end of milling. The hydrogen absorption properties of the 15h as-milled powders were evaluated by a Sieverts type apparatus at a temperature of 300, 325 and 350°C respectively. Improvement of the hydrogen absorption properties was observed with the titanium additions. At a temperature of 350°C and a H2 pressure of 50 atm, the (Mg2Ni)95Tis as-milled powders exhibited a maximum hydrogen absorption value and reversible content of 3.88 and 3.01 wt.% respectively.
KW - EXAFS
KW - Hydrogen absorption
KW - Mechanical alloying
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U2 - 10.4028/www.scientific.net/JMNM.24-25.419
DO - 10.4028/www.scientific.net/JMNM.24-25.419
M3 - Article
AN - SCOPUS:63849338805
VL - 24-25
SP - 419
EP - 422
JO - Journal of Metastable and Nanocrystalline Materials
JF - Journal of Metastable and Nanocrystalline Materials
SN - 1422-6375
ER -