Magnesium-based hydrogen storage alloy material and preparation method thereof
A magnesium-based hydrogen storage alloy and alloy technology, applied in electrical components, circuits, battery electrodes, etc., can solve the problems of unsatisfactory hydrogen desorption temperature and cycle life of the alloy, and limit the pace of application of magnesium-based hydrogen storage alloys
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Embodiment 1
[0033] Example 1 Mg 1.7 Zr 0.3 Ni-(1.1Ni+0.4Ti+5%Mg)
[0034] Mg (200 mesh), Ni (200 mesh), Zr (200 mesh) metal powder by Mg 1.7 Zr 0.3 The stoichiometric ratio of Ni was uniformly mixed, the total mass was 8g, and it was loaded into a stainless steel vacuum spherical tank with a volume of 300mL, and the weight ratio of the ball to material was 1:20, and stainless steel balls were placed. 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 120 hours. The working system adopts intermittent rotation to prevent the recrystallization of the amorphous alloy due to excessive temperature rise.
[0035] Ni (200 mesh), Ti (200 mesh) metal powder and Mg powder (200 mesh) with a purity of 99.9% were uniformly mixed according to the stoichiometric ratio of 1.1Ni+0.4Ti+5%Mg, and the total mass was 2g. Mg 1.7 Z...
Embodiment 2
[0036] Example 2 Mg 1.6 Zr 0.4 Ni-(1.5Ni+0.5Ti+30%Mg)
[0037] Mg (200 mesh), Ni (200 mesh), Zr (300 mesh) metal powder by Mg 1.6 Zr 0.4 The stoichiometric ratio of Ni was uniformly mixed, the total mass was 8g, and it was put into a stainless steel vacuum spherical tank with a volume of 300mL, and the weight ratio of the ball to material was 1:40, and stainless steel balls were put into it. 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 60 hours. The working system adopts intermittent rotation to prevent the recrystallization of the amorphous alloy due to excessive temperature rise.
[0038] Mix Ni (200 mesh), Ti (300 mesh) metal powder and Mg powder (200 mesh) with a purity of 99.9% according to the stoichiometric ratio of 1.5Ni+0.5Ti+30%Mg, the total mass is 2g. Mg 1.6 Zr 0.4 Ni and (1.5N...
Embodiment 3
[0039] Example 3 Mg 2 Zr 0.4 Ni-(1.2Ni+0.1Ti+5%Mg)
[0040] Mg (100 mesh), Ni (200 mesh), Zr (200 mesh) metal powder by Mg 2 Zr 0.4 The stoichiometric ratio of Ni was uniformly mixed, the total mass was 8g, and it was put into a stainless steel vacuum spherical tank with a volume of 300mL, and the weight ratio of the ball to material was 1:20, and stainless steel balls were put into it. 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 rotating speed of the ball mill was 350 rpm. The ball milling time was 150 hours. The working system adopts intermittent rotation to prevent the recrystallization of the amorphous alloy due to excessive temperature rise.
[0041] Ni (300 mesh), Ti (200 mesh) metal powder and Mg powder (200 mesh) with a purity of 99.5% were uniformly mixed according to the stoichiometric ratio of 1.2Ni+0.1Ti+5%Mg, and the total mass was 2g. Mg 2 Zr 0.4...
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