R. M. Carranza, M. A. Rodríguez
Alloy 22 (N06022) is highly resistant to localized corrosion. Under aggressive environmental conditions, Alloy 22 may be susceptible to crevice corrosion in hot chloride (Cl-) solutions. The objective of the present work was to explore the environmental and geometrical conditions for crevice corrosion to occur. Electrochemical tests were performed using PCA and prismatic mill annealed Alloy 22 specimens in chloride solutions. Crevice corrosion current density was found to be a function of applied potential. i CREV values ranged from 40 µA/cm2 to 20 mA/cm2. Such low values of current density explained the absence of pitting corrosion in Alloy 22 at any potential. Results indicated that decreasing pH in hydrochloric acid solutions affected the corrosion behavior of Alloy 22, with different corrosion current densities measured at 90ºC under various chloride concentrations. The findings highlighted the complexities of localized corrosion mechanisms in Alloy 22, illustrating how both environmental factors and specimen geometry influence susceptibility to crevice corrosion. This research enhances the understanding necessary for evaluating the durability of Alloy 22 in corrosive environments.
@article{38a654b1-c29c-499b-9ddf-f2c99c54b42f,
title={Environmental and Geometrical Conditions to Sustain Crevice Corrosion in Alloy 22},
author={R. M. Carranza and M. A. Rodríguez},
year={2007},
language={es}
}TY - JOUR TI - Environmental and Geometrical Conditions to Sustain Crevice Corrosion in Alloy 22 AU - R. M. Carranza AU - M. A. Rodríguez PY - 2007 LA - es ER -
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