Process for the preparation of metal powders or of metal hydride powders of the elements Ti, Zr, Hf, V, Nb, Ta and Cr

摘要

A process for the production of metal powders or the metal hydride powders of the elements Ti, Zr, Hf, V, Nb, Ta and Cr, in which an oxide of these elements mixed with a reducing agent and this mixture in a furnace optionally under a hydrogen atmosphere (then form Metal hydride) is heated until the reduction reaction starts, the reaction product is leached and then washed and dried, the oxide used having a mean grain size of 0.5 to 20 μm, a BET specific surface area of 0.5 to 20 m × 2 · / G and has a minimum content of 94 wt .-%.