The chemical composition of DERUI aluminum anodes is based on the well established Al-Zn-In alloy and it is suitable for most sea water applications. The quality of the anode and especially the alloying procedure is of outmost importance for the performance of aluminum anodes which are generally more susceptible to passivation than zinc. However aluminum alloys have an electrochemical capacity which is more than 3 times greater than the capacity of zinc and it is nowadays the most widely used alloy for the Cathodic protection of ships and other marine metallic structures.
