Porous alumina coatings on carbon-bonded foam filters by electrophoretic deposition

摘要

Carbon-bonded foam-filters, such as alumina-carbon foams, are widely used for the filtration of metal melts. The aim of the experimental investigations reported in this paper was to examine the possibility of producing alumina coatings with a porous structure on such alumina-carbon foams by an electrophoretic deposition method. This method utilizes the simultaneous gas evolution by electrolysis to generate channel-like pores during the formation of ceramic layers by the electrophoretic deposition from aqueous suspensions.