Process for producing valve-metal anodes for electrolytic capacitors
AssigneeHermann C. Starck Berlin
InventorsWolf-Wigand Albrecht, Axel Hoppe, Uwe Papp, Rudiger Wolf
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Abstract
To produce valve-metal anodes for electrolytic capacitors, reducing agents are added to the already sintered and/or unsintered anode bodies to improve the electrical properties, whereupon heating is carried out at temperatures above the melting point of the reducing agents and below the temperatures conventionally used for sintering the valve-metal anodes.
Claims10
A process for producing a valve-metal anode for electrolytic capacitors which comprises heating under a high vacuum or under an inert gas atmosphere a previously heat-treated, shaped and pressed mass of valve-metal powder in the presence of a reducing metal at a temperature above the melting point of the reducing metal and below a temperature conventionally used for sintering a valve-metal anode.
Dependencies are inferred from the claim text.