Method of producing sintered porous anode body for solid electro

Details Method of producing sintered porous anode body for solid electro Method of producing sintered porous anode body for solid electro

1991-12-02

1995-10-10

Walsh, Donald P.

Powder metallurgy processes

Powder metallurgy processes with heating or sintering

Consolidation of powder prior to sintering

419 57, 419 60, B22F 312

Patent

active

054568781

ABSTRACT:
In a producing process of a sintered porous anode body of valve-metal for a solid-state electrolytic capacitor, molded pieces of the powder of valve-metal is sintered at a high temperature and at a lowered pressure in an atmosphere of an inert gas supplied at a fixed flow rate. Thanks to the usage of the inert gas, partial pressures of impurity elements can be suppressed and a gas emitted from the molded pieces in the sintering process can be washed out. Consequently, there is obtained a solid-state electrolytic capacitor in which the lead wire of the anode body is not easily bent down and which has a reduced leakage current and an increased withstand voltage.

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