Effect of tin on the corrosion behavior of low-alloy steel in an acid chloride solution

This study examined the effect of Sri addition ranging from 0 to 0.1 wt.% on the electrochemical properties of low-alloy steel using electrochemical techniques in an acid chloride solution and surface analysis techniques. The potentiodynamic test showed the active corrosion behavior of all specimens and the corrosion rate decreased with increasing Sri addition. EIS showed that the Sn-containing steels had higher rust layer resistance. These results confirmed that the interaction of Sri with Cu and Sb improves the corrosion resistance of low-alloy steel due to the formation of the continuous tin oxide, copper oxide and antimony oxide layer. (C) 2009 Elsevier Ltd. All rights reserved.