M.A. Rodríguez, R.M. Carranza
Alloy 22 (UNS N06022) is a Ni-Cr-Mo alloy, highly resistant to localized corrosion, with applications in high-level nuclear waste containers. This study aims to investigate the effect of potential on the kinetics of chloride-induced crevice corrosion of Alloy 22 at 90°C. Electrochemical tests, including cyclic potentiodynamic polarization (CPP) curves and electrochemical impedance spectroscopy (EIS), were conducted to establish the corrosion behavior. Results show that crevice corrosion susceptibility is independent of bulk solution pH but is significantly influenced by potential. Two distinct regions were identified in polarization tests: an incubation phase followed by initiation and propagation of crevice corrosion. The crevice corrosion current density increased with potential, reaching a maximum of approximately 20 mA/cm², while the absence of pitting corrosion was attributed to the small current density observed. This research provides critical insights into the corrosion mechanisms affecting Alloy 22 in chloride environments, contributing to its application in corrosion-resistant barriers.
@article{0c622a9d-ab76-4ff9-91d9-9fb8f2611b87,
title={Effect of Potential on Crevice Corrosion Kinetics of Alloy 22},
author={M.A. Rodríguez and R.M. Carranza},
year={2010},
language={es}
}TY - JOUR TI - Effect of Potential on Crevice Corrosion Kinetics of Alloy 22 AU - M.A. Rodríguez AU - R.M. Carranza PY - 2010 LA - es ER -
Important advances in electrochemical engineering technology over the last three decades have fostered the development of a lternative methods to alle
T. MADHAVI LATHA, S. VENKATACHALAM
Tungsten and cobalt are recovered by an electrochemical method using nitric acid as the electrolyte. The method involves the oxidation of carbide mate