Abstract
Although much is known about the structure, composition, and growth dynamics of rust phases formed on constructional low alloy and weathering steels, several aspects remain controversial, particularly in coastal areas where water retention and chloride contents are high. The present study presents and discusses results from infrared adsorption spectroscopy, a differentiating technique for iron corrosion layers. Spectra were obtained from powdered inner and outer rust samples grown in simulated high chloride conditions under various relative humidify levels. These show potential for the characterisation of iron oxides and oxyhydroxides formed in the early stages of the rusting process, an essential step in the establishment of a general model of attack in chloride containing environments.
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