This work analyses the corrosion mechanisms of carbon steel when exposed to marine atmospheres with very different chloride ion deposition rates. Two extreme situations are described, characterized by a "consolidated rust layer" (at relatively low atmospheric salinities), formed by a diffusion-controlled corrosion mechanism in which the reduction of dissolved oxygen in the aqueous film deposited on the metal is the predominant cathodic reaction, and an "exfoliated rust layer" (at high atmospheric salinities), where the cathodic reaction of hydrogen evolution becomes important, notably accelerating the corrosion process. The research has employed a range of near-surface and bulk sensitive analytical techniques (SEM/EDS, mu XRD, and SEM/mu Raman) to characterize the corrosion products and rust layers formed.
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机译：这项工作分析了碳钢在暴露于氯离子沉积速率差异很大的海洋大气中时的腐蚀机理。描述了两种极端情况，其特征是“固结锈层”（在较低的大气盐度下），这是由扩散控制的腐蚀机制形成的，其中沉积在金属上的水膜中溶解氧的减少是主要的阴极反应，以及“剥离的锈层”（在高大气盐度下），其中放出氢的阴极反应变得很重要，特别是加速了腐蚀过程。该研究采用了一系列的近表面和体积敏感分析技术（SEM / EDS，mu XRD和SEM / mu Raman）来表征腐蚀产物和形成的锈层。
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