Abstract
The passivity and protective nature of the passive films are essentially related to ionic and electronic transport processes, which are controlled by the optical and electronic properties of passive films. Corrosion properties of passive films anodically formed on 304L stainless steel in borate/boric acid solution have been examined using electrochemical impedance spectroscopy (EIS). An electrical equivalent circuit based on the impedance analysis, which describes the behavior of the passive film on stainless steel more satisfactorily than the proposed models, is presented. The semiconducting properties of the passive films were also investigated by photoelectrochemistry. Effects of film-formation potential, film-formation time, and applied potential on the electronic properties were studied. Depending on the operating conditions, the optical bandgap values were estimated to vary from 2.1 to . Both film resistance and bandgap were found to decrease with applied potential. Therefore, correlation between the two significant parameters was determined.
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.
