Effects of Bi and Ti on electrochemical property of Al-Zn-In sacrificial anode

The effect of trace elements Bi and Ti on the electrochemical property of aluminium sacrificial anode in seawater was studied. Different amounts of Bi and Ti were alloyed with Al-Zn-In to make 9 types of aluminium sacrificial anodes. Anode closed circuit potential, discharge capacities and current efficiencies were measured in the laboratory. The results show that the effect of Bi is greater than that of Ti. Contribution No. 1869 from the Institute of Oceanology, Academia Sinica.