CAPACITOR ANODE AND PRODUCTION METHOD FOR SAME

摘要

An anode body for a capacitor and method for producing the same, which method includes compressing a powder mixture containing a tungsten powder and a high-oxygen-affinity metal powder into a compact with a wire rod planted therein, and firing the compact into a sintered compact. The high-oxygen-affinity metal has an oxygen affinity higher than that of tungsten. The content of the high-oxygen-affinity metal powder in the powder mixture is regulated so that the content of the high-oxygen-affinity metal in the sintered compact is 0.1 to 3% by mass based on the mass of the tungsten in the sintered compact. The wire rod includes tantalum or niobium. Also disclosed is an electrolytic capacitor including the anode body.

主权项

1. An anode body for a capacitor, the anode body comprising:
a sintered compact comprising tungsten and a high-oxygen-affinity metal; and a wire rod partially embedded in the sintered compact, wherein the high-oxygen-affinity metal has an oxygen affinity higher than that of tungsten, the content of the high-oxygen-affinity metal in the sintered compact is 0.1 to 3% by mass based on the mass of the tungsten in the sintered compact; and the wire rod comprises tantalum or niobium.