NIOBIUM OR TANTALUM BASED POWDER PRODUCED BY THE REDUCTION OF THE OXIDES WITH A GASEOUS METAL

摘要

Metal powder from the group Ta, Nb, Ti, Mo, W, V, Zr, Hf, preferably Ta or Nb, is made in a fine powder form by reduction of metal oxide by contact with a gaseous reducing agent, preferably an alkaline earth metal, to near complete reduction, leaching, further deoxidation and agglomeration, the powder so produced being sinterable to capacitor anode form and processable to other usages.