Localized Corrosion of Aluminum Alloys—A Review
Author:
- 1 May 1986
- journal article
- review article
- Published by Association for Materials Protection and Performance (AMPP) in Corrosion
- Vol. 42 (5) , 277-288
Abstract
Localized corrosion, which usually appears as pitting, crevice corrosion (CC), or certain aspects of stress corrosion cracking (SCC), is a multi-step process. This review is organized by a consideration of the four steps involved in localized corrosion: (1) adsorption of the reactive anion on the oxide covered aluminum; (2) chemical reaction of the adsorbed anion with the aluminum ion in the aluminum oxide lattice or the precipitated aluminum hydroxide; (3) thinning of the oxide by dissolution; and (4) direct attack of the exposed metal by the anion, perhaps assisted by an anodic potential. The experimental work reported in the literature is evaluated within this framework.Keywords
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