Multi-layer ring element with hydrogen absorption and desorption function and foreign gas adsorption function and preparation method thereof

Abstract

The invention relates to a multi-layer ring element with a hydrogen absorption and desorption function and a foreign gas adsorption function and a preparation method thereof. In the element, a titanium-molybdenum alloy is used as a hydrogen absorption and desorption alloy, a titanium-zirconium-manganese-iron alloy is used as a foreign gas adsorption alloy, copper powder is used as a spacer layer,layer-by-layer pressing is performed in a mold to form a blank, and then sintering is performed to obtain the element. The element is used for hydrogen absorption and desorption and foreign gas removal of a pseudo-spark switch. The preparation method includes the steps: (1) smelting titanium and molybdenum to obtain a hydrogen absorption and desorption alloy ingot; (2) smelting titanium, zirconium, manganese and iron to obtain a foreign gas adsorption alloy ingot; (3) crushing the two alloy ingots separately for powdering, and grinding the two kinds of alloy powder and copper powder into powder separately; (4) under the protective atmosphere of argon, putting the different kinds of powder into the mold layer by layer sequentially to press the powder into the multi-layer ring element blank;and (5) sintering the ring blank into the element.

Description

technical field [0001] The present invention relates to a multi-layer annular element with the functions of hydrogen absorption and desorption and adsorption of impurity gas and its preparation method, in particular to the design and preparation of a multi-layer annular element for hydrogen absorption and desorption and impurity gas removal that can be used for pseudo-spark switches method. Background technique [0002] The pseudo-spark switch is the most important development in the field of pulse power technology since the 1980s, and it can be used to generate a fast closing switch with a steep wave head and a large pulse current with a high repetition rate. The hydrogen storage is an important part of the pseudo-spark switch. It is composed of a number of ring-shaped hydrogen storage material elements and heating resistance wires. When the switch is working, the hydrogen storage material releases hydrogen rapidly under the heating of the resistance wires to ensure the nor...

AI Technical Summary

Problems solved by technology

After the actual test, it was found that after mixing and sintering, different metal components will diffuse, which will easily cause the slope change of the platform pressure of hydrogen absorption and desorption and adsorption of impurity gas, and will easily drop powder or produce fragmentation during the repeated hydrogen absorption and desorption process. Increase the failure factor; in addition, titanium-vanadium-iron alloy still has a large hydrogen absorption capacity at 600 °C, and it will absorb a large amount of hydrogen in the application range of the pseudo-spark switch, and the reversibility of hydrogen absorption and desorption is poor, resulting in low adsorption capacity and adsorption rate of impurity gases

Therefore, there is an urgent need for a new hydrogen absorption and desorption element capable of adsorbing impurity gases and its preparation method to solve the problem of interdiffusion of different functional metal components in the element preparation process.

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