Magnesium-based hydrogen storage alloy material and preparation method thereof
A magnesium-based hydrogen storage alloy and amorphous alloy technology, applied in the field of hydrogen storage, can solve the problems of exhaustion of improvement effect, neglect of mutual coordination, and neglect of the interaction between the active layer and magnesium-based hydrogen storage alloy.
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Embodiment 1
[0034] Press Mg, Si, Ni powder into Mg 2.0 Si 0.2 The stoichiometric ratio of Ni was uniformly mixed, and loaded into a stainless steel vacuum spherical tank with a volume of 100ml, and stainless steel balls were put in according to the weight ratio of material: steel balls of 1:20. Before ball milling, the ball mill tank should be evacuated and filled with 1.0×10 5 Pa argon to prevent the alloy metal powder from being oxidized. The rotational speed of the ball mill was 500 rpm. The ball milling time was 80 hours. The working system adopts intermittent rotation to prevent the recrystallization of the amorphous alloy due to excessive temperature rise. Take out Mg 2.0 Si 0.2 Ni alloy powder, by (Mg 2.0 Si 0.2 Ni) 40wt%, (Ni 0.7 Ti 0.3 ) 60wt% by adding Ni and Ti powders, mixing evenly, adding to the stainless steel grinding jar, first vacuuming the ball mill jar, and filling it with 1.0×10 5 Pa of argon to prevent the alloy powder from being oxidized. The rotating sp...
Embodiment 2
[0037] Mg, Si, Ni metal powder by Mg 1.8 Si 0.2 The stoichiometric ratio of Ni was uniformly mixed, and loaded into a stainless steel vacuum spherical tank with a volume of 100ml, and stainless steel balls were put in according to the weight ratio of material: steel balls of 1:20. Before ball milling, the ball mill tank should be evacuated and filled with 1.0×10 5 Pa argon to prevent the alloy metal powder from being oxidized. The rotational speed of the ball mill was 450 rpm. The ball milling time was 80 hours. The working system adopts intermittent rotation to prevent the recrystallization of the amorphous alloy due to excessive temperature rise. Take out Mg 1.8 Si 0.2 Ni alloy powder, by (Mg 1.8 Si 0.2 Ni) 40wt%, (Ni 0.7 Ti 0.15 B 0.15 ) at a ratio of 60wt% to add powder, mix evenly, add to the stainless steel grinding jar, first vacuumize the ball mill jar, and fill it with 1.0×10 5 Pa of argon to prevent the alloy powder from being oxidized. The rotating spee...
Embodiment 3
[0040] Mg, Zr, Ni metal powder by Mg 1.8 Zr 0.2 The stoichiometric ratio of Ni was uniformly mixed, and loaded into a stainless steel vacuum spherical tank with a volume of 100ml, and stainless steel balls were put in according to the weight ratio of material: steel balls of 1:20. Before ball milling, the ball mill tank should be evacuated and filled with 1.0×10 5 Pa argon to prevent the alloy metal powder from being oxidized. The rotational speed of the ball mill was 450 rpm. The ball milling time was 80 hours. The working system adopts intermittent rotation to prevent the recrystallization of the amorphous alloy due to excessive temperature rise. Take out Mg 1.8 Zr 0.2 Ni alloy powder, by (Mg 1.8 Zr 0.2 Ni) 40wt%, (Ni 1.1 Ti 0.4 ) Add Ni and Ti powders at a ratio of 60wt%, mix evenly, and add them to a stainless steel grinding tank. Vacuum the ball mill tank first, and fill it with 1.0×10 5 Pa argon to prevent the alloy metal powder from being oxidized. The rota...
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