Process for reducing the porosity of a coating made of ceramic material, such as an alumina coating

摘要

According to this process the coating of oxide-based ceramic material, for example Al2O3-TiO2, is impregnated with orthophosphoric acid and the coating is then subjected to a heat treatment to form an amorphous phosphate of an element of the ceramic material, for example AlPO4, in situ in the pores. The support may be an aluminium sheet.