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專利名稱 Method and apparatus for manufacturing high-purity hydrogen storage alloy Mg2Ni
專利證號 US7651546B2
國別 美國
獲證日期 2010-01-26
專利摘要 The present invention provides a method for manufacturing high-purity hydrogen storage alloy Mg 2Ni applicable to industry and capable of manufacturing continuously. First, raw materials of magnesium-nickel with weight percentage of nickel between 23.5 and 50.2 are heated, melt, and mixed uniformly. Cool the magnesium-nickel liquid and control the temperature to be above the solidification temperature and below the liquification temperature in the phase diagram of magnesium-nickel. By making advantage of segregation principle in phase diagrams, solid-state high-purity γ-phase Mg2Ni hydrogen storage alloy is given. Then high-purity γ-phase Mg2Ni hydrogen storage alloy with atomic ratio of 2:1, no other phases, and with excellent hydrogen absorption-desorption dynamics is given. The present invention provides a method for manufacturing high-purity hydrogen storage alloy Mg2Ni applicable to industry and capable of manufacturing continuously. First, raw materials of magnesium-nickel with weight percentage of nickel between 23.5 and 50.2 are heated, melt, and mixed uniformly. Cool the magnesium-nickel liquid and control the temperature to be above the solidification temperature and below the liquification temperature in the phase diagram of magnesium-nickel. By making advantage of segregation principle in phase diagrams, solid-state high-purity gamma-phase Mg2Ni hydrogen storage alloy is given. Then high-purity gamma-phase Mg2Ni hydrogen storage alloy with atomic ratio of 2:1, no other phases, and with excellent hydrogen absorption-desorption dynamics is given.

IPC國際分類號

C22B002622