Production of e.g. tantalum metal powders, used to manufacture high capacity solid electrolytic condensers, includes oxidising and reducing precursor while maintaining morphology

摘要

A precursor of the desired morphology is made and converted to an oxide. The structure of the oxide is stabilized by temperature treatment. It is then reduced while maintaining the morphology. An Independent claim is included for the metal powder produced as described, a so-called valve metal powder.