Zirconium and titanium-doped A2B7 type rare earth-yttrium-nickel family hydrogen storage alloy
A technology of hydrogen storage alloys and rare earths, which is applied to electrical components, battery electrodes, circuits, etc., can solve the problems of increased manufacturing difficulty, difficult control of alloy components, and potential safety hazards, and achieves simple, safe, and The effect of good activation properties
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Embodiment 14
[0022] The alloys described in Example 14 and Example 15 were prepared using the same ratio of raw materials. The alloy described in Example 14 is prepared by the aforementioned high-temperature smelting-quick quenching method. The process is as follows: the purity of each elemental metal or intermediate alloy raw material in the composition is >99.0%, and the ratio of each raw material is calculated according to the chemical molecular formula and accurately weighed ( Raw materials that are easy to burn need to increase the ratio in an appropriate amount), put the raw materials into Al 2 o 3 The crucible is evacuated to 3.0Pa and filled with inert gas Ar to 0.055MPa. Heat up and smelt, keep warm for about 6 minutes and then quickly solidify. The speed of the quick-setting copper roller is 3.4m / s. The copper roller is usually fed with cooling water, and the temperature of the cooling water is 25°C.
Embodiment 15
[0023] The alloy described in Example 15 can also be prepared by high-temperature smelting-quick quenching method, and an annealing heat treatment step is added in the process, specifically: the purity of each elemental metal or intermediate alloy raw material in the composition is >99.0%, and the ratio is according to the chemical molecular formula Calculate and accurately weigh each raw material (the proportion of easy-to-burn raw materials needs to be increased in an appropriate amount), and put the raw materials into Al 2 o 3 The crucible is evacuated to 3.0Pa and filled with inert gas Ar to 0.055MPa. Heat up and smelt, keep warm for about 6 minutes and then quickly solidify. The speed of the quick-setting copper roller is 3.4m / s. The copper roller is usually fed with cooling water, and the temperature of the cooling water is 25°C. The quick-setting alloy is annealed at 750°C for 8 hours under the protection of vacuum or inert gas.
Embodiment 28
[0024] M1 in Example 28 is a lanthanum-rich mixed rare earth metal, which contains about 64% of La, about 25% of Ce, about 3% of Pr, and about 8% of Nd.
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