Electrochemical Behaviors of Alloy 690 in Caustic Solutions Containing Pb at 300°C

Lead-induced stress corrosion cracking behavior of mechanically surface-treated alloy 690

“…Kim et al [16] provided the evidence to establish the relation between PbSCC and an anodic dissolution mechanism, [11] which is the potential range of the maximum PbSCC susceptibility corresponding to the position of an anodic current peak. PbSCC behavior highly depends on the solution pH value, and recent investigation indicated that the effect of Pb contamination on the passivity degradation of alloy 690 in an alkaline solution was more significant than that observed in the acidic one.…”