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A novel thermic process for producing V-based solid solution type hydrogen storage alloy
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DOI：10.2320/jinstmet1952.64.4_221.png)
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摘要
En 中文
A high performance hydrogen storage alloy V-16 mass%Ti-12 mass%Ni-1.4 mass%Nb-0.96 mass%Co-2.8 mass%Ta is sensitively influenced by dissolved aluminum and oxygen, both of which are reduced by unproductive refining process. Then, it was necessary to develop the process of simply removing these impurities at a reasonable cost. Then, we propose a new production technique. A V-15 mass%Ni-1.8 mass%Nb precursor with a low enough level of aluminum was produced by aluminothermic reduction of the mixture V2O5, Nb2O5 and nickel. When the V-16 mass%Ti-12 mass%Ni-1.4 mass%Nb-0.96 mass%Co-2.8 mass%Ta alloy was obtained by alloying the precursor and the other constituents of titanium, cobalt and tantalum, it was deoxidized to a low enough level by adding mischmetal as a reducing agent. By the method described here, the vanadium-based alloy can be produced at a reasonable cost.
Keyword:
vanadium
solid solution
hydrogen storage alloy
hydrogen absorption
pressure-composition-temperature curve
thermic reduction
deoxidization
concentration equilibrium constant
mischmetal
oxygen
aluminum
