Synthesis of the Mg2Ni Alloy Prepared by Mechanical Alloying Using a High Energy Ball Mill

被引:0
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作者
Luis Iturbe-Garcia, Jose [1 ]
Rodrigo Garcia-Nunez, Manolo [2 ]
Eugenia Lopez-Munoz, Beatriz [1 ]
机构
[1] Inst Nacl Invest Nucl, Dept Quim, Ocoyoacac 52740, Edo De Mex, Mexico
[2] Univ Nacl Autonoma Mexico, Fac Estudios Super Zaragoza, Mexico City 09230, DF, Mexico
关键词
Mechanical Alloying; Mg2Ni alloy; Hydrogen Storage; X Ray Diffraction; Scanning Electron Microscopy; HYDROGEN ABSORPTION; MG; COMPOSITES; HYDRIDES; STORAGE;
D O I
暂无
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Mg2Ni was synthesized by a solid state reaction from the constituent elemental powder mixtures via mechanical alloying. The mixture was ball milled for 10 h at room temperature in an argon atmosphere. The high energy ball mill used here was fabricated at ININ. A hardened steel vial and three steel balls of 12.7 mm in diameter were used for milling. The ball to powder weight ratio was 10:1. A small amount of powder was removed at regular intervals to monitor the structural changes. All the steps were performed in a little lucite glove box under argon gas, this glove box was also constructed in our Institute. The structural evolution during milling was characterized by X-ray diffraction and scanning electron microscopy techniques. The hydrogen reaction was carried out in a micro-reactor under controlled conditions of pressure and temperature. The hydrogen storage properties of mechanically milled powders were evaluated by using a TGA system. Although homogeneous refining and alloying take place efficiently by repeated forging, the process time can be reduced to one fiftieth of the time necessary for conventional mechanical milling and attrition.
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页码:46 / 50
页数:5
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