Abstract
Abstract Using potentiostatic anodic polarization techniques, the influence of chloride ions on the anodic dissolution kinetics of a series of nickel-chromium binary alloys has been studied. Based on polarization data, evidence is presented to show that over the range 20–100 w/o Cr, chloride affects the cathodic partial process. Chloride ion does not appear to affect the anodic Tafel constants for high nickel alloys, but is shown to inhibit passivity in alloys of 90 w/o and 100 w/o Ni. Data are presented to show that increased chromium content increases the stability of the passive state, both in terms of passive dissolution rate and the critical breakdown potential. Samples of pure nickel and 90 w/o Ni-10 w/o Cr alloy appeared to pit during anodic polarization, in the absence of an active-passive transition. These data would indicate a tendency for nickel to pit in the absence of a “passive film.”
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: 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.