A. Proust, G. Girardin
The most common case of crevice corrosion occurs on passive materials, particularly on stainless steels, in oxidizing chloride environment. In order to guarantee the arrest of the propagation of crevice corrosion, the potential has to be lower than a critical value: “the repassivation potential”. A simple and flexible crevice propagation model has been developed to allow parametric studies of the local solution in an attempt to identify repassivation conditions. The main results obtained allow to establish diagrams of stability of solid and gas phases within the crevice and to evaluate the influence of the external potential, the external chloride concentration and the geometry on the local chemistry. It appears that the deepest crevices are not necessary the worst. The introduction, at the crevice tip, of a simple criterion of repassivation reveals the existence of a repassivation potential which depends on the crevice geometry.
@article{58a491dd-6db0-461e-af0c-e33c83827955,
title={Characterization of the influence of the},
author={A. Proust and G. Girardin},
year={2026},
language={en}
}TY - JOUR TI - Characterization of the influence of the AU - A. Proust AU - G. Girardin PY - 2026 LA - en ER -
Unknown, Unknown
This chapter discusses metal casting processes, highlighting the diversity and common characteristics among them. The objective is to elucidate the fu
Unknown, Unknown
This study focuses on the fundamental characteristics of solid iron, which is predominantly composed of iron atoms and provides a basis for understand
Ir. Méshac KIME ILUNGA
Ce document traite des procédés métallurgiques spéciaux, en mettant particulièrement l'accent sur l'extraction liquide-liquide, un processus mis au po
Copper solvent extraction units at large hydrometallurgical plants face constraints in metal recovery, phase disengagement, and reagent consumption, d
Non spécifié
L'hydrométallurgie du cuivre, principalement axée sur les minerais oxydés facilement solubles, s'applique également aux minerais sulfurés ou mixtes ap