Improvements in porous bodies for solid electrolytic capacitors and processes for producing the same.

摘要

A process for producing a porous body for use as an electrode for a solid electrolytic capacitor. In the process, titanium powder having an average particle size from 10 to 30 mu m is mixed with aluminium powder having an average particle size from 1/6 to 1/2 of that of the titanium. The mixture is then compression molded and heat treated in a vacuum or inert gas to diffuse the aluminium into the titanium. In the product the surface of the titanium-aluminium particles has a fine ruggedness of size from 0.5 to 5 mu m. The aluminium content of the titanium-aluminium alloy is from 50 to 70 atomic %.