METHOD OF MANUFACTURING NIOBIUM POWDER, AND METHOD OF MANUFACTURING NIOBIUM MONOXIDE POWDER

摘要

PROBLEM TO BE SOLVED: To provide a method of manufacturing a niobium powder to obtain the niobium monoxide powder having a powder resistance (electric conductivity) suitable for a capacitor.;SOLUTION: The method of manufacturing the niobium powder by reducing a niobium oxide with a high oxidation number includes: a primary reduction process of mixing the niobium oxide with the high oxidation number and a grain growth inhibitor inhibiting a bonding between grains produced by a reduction reaction, performing a reduction using a base metal as a reducing agent, and removing the grain growth inhibitor to produce a primary reduced niobium powder; and a secondary reduction process of mixing the primary reduction niobium powder and the grain growth inhibitor, performing a reduction using a base metal as a reducing agent, and removing the grain growth inhibitor to produce a secondary reduction niobium powder.;COPYRIGHT: (C)2012,JPO&INPIT