There has been little theoretical and experimental data on the behavior of Al-Zn-In anodes in elevated
temperature seawater. The majority of the work was aimed at giving the cathodic protection engineer some
direction on the performance of anodes in harsh environments without discussion of the theoretical aspects of
aluminum activation and failure at elevated temperatures. A discussion of previous research is reviewed with
respect to aluminum anode performance in seawater at elevated temperatures. Experiments were conducted on
a commercially available aluminum anode at 20, 40, 60, and 80 C in 3.5% NaCl. Current capacity, corrosion
morphology, and hydrogen evolution results are presented and a discussion on anode activation mechanisms is
reviewed in relation to the results. This paper focuses on aluminum zinc indium activated anodes.