Abstract
The present study explored the electrochemical behavior of UNS S32750, a super duplex stainless steel which was not commonly researched in previous studies. The effect of bicarbonate () and sulfate () on the electrochemical behavior of UNS S32750 duplex stainless steel in the chloride (Cl−) solution was investigated using potentiodynamic polarization, scanning electron microscope (SEM), electrochemical impedance spectroscopy (EIS), and Mott‐Schottky analysis. The electrochemistry behavior shows that with the addition of and , pitting potential increased and passive current density decreased, indicating that bicarbonate or sulfate can reduce sensitivity to pitting corrosion of UNS S32750 duplex stainless steel in Cl− solution, and film resistance (R1) and lower charge transfer resistances (R2) increased, and the carriers density (NA and ND) values are about 1020 cm3, and the carriers density decreases. The results may provide theoretical guidance for material‐choosing in the wastewater treatment industries containing high chloride concentration such as non‐ferrous metallurgical wastewater.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
