METHOD FOR PRODUCING LOW-OXYGEN VALVE-METAL SINTERED BODIES HAVING A LARGE SURFACE AREA
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Apr 10, 2014
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Apr 12, 2013
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A process for producing a sintered body includes pressing a powder comprising or consisting of at least one valve metal so as to provide a pellet, providing the pellet together with a reducing agent so that the pellet is not in a direct contact with and does not come into a direct contact with the reducing agent, heating so that the powder in the pellet is sintered to form a sintered body, an oxygen content of the at least one valve metal within the sintered body is simultaneously reduced, and the reducing agent is oxidized to an oxidized reducing agent, and removing the oxidized reducing agent with at least one mineral acid.
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