Process for preparing a vanadium-nickel-chromium master alloy

Details Process for preparing a vanadium-nickel-chromium master alloy Process for preparing a vanadium-nickel-chromium master alloy

1992-01-30

1993-03-23

Yee, Deborah

Specialized metallurgical processes, compositions for use therei

Compositions

Solid treating composition for liquid metal or charge

75352, 75359, 75622, 75628, 164 61, 164 681, C22C 105, C22C 104

Patent

active

051960486

ABSTRACT:
A hydrogen battery alloy is prepared which is substantially free of inclusions of chromium by preparing a first precursor alloy or master alloy containing vanadium, nickel, and chromium using relatively equal amounts of vanadium and nickel and then adding from 5% to 12% by weight of chromium. The alloy materials are introduced into an aluminothermic reaction as vanadium pentoxide, nickel powder and chromium powder with the aluminum metal being in slight excess of its stoichiometric amount. The first precursor alloy described further alloyed with preselected amounts of nickel, zirconium, titanium, cobalt, manganese, aluminum, and chromium to form an alloy suitable for use as an electrode material in rechargeable electrochemical hydrogen storage cells.

REFERENCES:
patent: 4948423 (1990-08-01), Fetcenko et al.
patent: 5002730 (1991-03-01), Fetcenko et al.
O. N. Carlson et al, "A Process for Preparing High-Purity Vanadium", Journal of Metals, Mar. 1966, pp. 302-323.

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