Investigation of the effects of the magnetic field on the anodic dissolution of alloy 690 in SO42− + SCN− solution using digital holography

ABSTRACT: Digital holography has been employed for in situ observation of dynamic processes occurring at the electrode|electrolyte interface during the anodic dissolution of Alloy 690 in solutions containing SO42− + SCN− with or without magnetic field (MF). It was found that MF increased the anodic current of Alloy 690 in 0.5 M Na2SO4 + 5 mM KSCN solution but showed a decreased value when evaluated in 0.5 M H2SO4 + 5 mM KSCN solution. For each solution, as a result of the stirring effect due to Lorentz force, MF showed a decreased localized damage further preventing pitting corrosion. The content of nickel and iron at grain boundaries is higher than that on the grain body, in accordance with the Cr-depletion theory. MF increased the anodic dissolution of nickel and iron, which in turn increased the

SUBMITTER: Xu D 

PROVIDER: S-EPMC9984449 | biostudies-literature | 2023 Feb

REPOSITORIES: biostudies-literature