FIELD: metal powders and electrolytic condenser using the same.
SUBSTANCE: claimed method includes grinding of niobium or tantalum boring at elevated temperature in presence of at least one liquid solvent to produce niobium or tantalum powder followed by reducing treatment of powder; further grinding under the same conditions followed by forming of condenser anode from said powders. Claimed niobium powder contains 40-200 ppm of carbon and 5-200 ppm in total of iron, nickel and chromium.
EFFECT: reduced direct current leakage in niobium and tantalum; accelerated production of powder with high surface area and reduced impurities; and production of flaky niobium and tantalum.
29 cl, 4 dwg, 2 tbl, 16 ex
