Abstract
The purpose of this study is to investigate the effect of SO42- ions on the pitting potential (E pit ) and critical pitting temperature (CPT) of high-entropy alloy Co 1.5 CrFeNi 1.5 Ti 0.5 Mo 0.1 in chloride solutions. The results indicate that the values of CPT for the alloy in 0.1, 0.5, and 1mol/L NaCl are 70, 60 and 60°C, respectively; the values of E pit are linear with the logarithm of chloride concentrations at 70 and 80°C; and the addition of SO42- ions to chloride solutions has a positive effect on both E pit and CPT as the ratio of SO42-/Cl - is higher than 0.5. © 2010 Elsevier Ltd.