Preparation of Ductile Vanadium by Calcium Reduction

Abstract
A method is described for preparing ductile vanadium of about 99.5 per cent purity by calcium reduction of vanadium pentoxide. On the scale investigated, metal so reduced collects in a solid regulus weighing about 100 grams and can be cold worked directly from the button to thin foils without annealing. Oxygen is the principal cause of embrittlement in vadium produced by this technique.