DSA type electrodes (IrOx/Ti) were prepd. by induction heating technique which allows a rapid decompn. of the precursor under anaerobic conditions. With this type of electrode, an activation process is obsd. in cyclic voltammetry which can be related to the presence of metallic Ir within the coatings. The electrooxidn. of alcs. in acid medium was studied by cyclic voltammetry. In the presence of alcs., a large current enhancement was obsd. at E >= 1.3 V/normal H electrode. This great reactivity can be due to high iridium oxidn. states, Ir(V) and Ir(VI), present in the oxide layer in this potential range. [on SciFinder (R)]