Progress in corrosion science at atomic and nanometric scales

Abstract : Contemporary aspects of corrosion science are reviewed to show how insightful a surface science approach is to understand the mechanisms of corrosion initiation at the atomic and nanometric scales. The review covers experimental approaches using advanced surface analytical techniques applied to single-crystal surfaces of metal and alloys exposed to corrosive aqueous environments in well-controlled conditions and analysed in situ under electrochemical control and/or ex situ by scanning tunnelling microscopy/spectroscopy, atomic force microscopy and x-ray diffraction. Complementary theoretical approaches based on atomistic modeling are also covered. The discussed aspects include the metal-water interfacial structure and the surface reconstruction induced by hydroxide adsorption and formation of 2D (hyd)oxide precursors, the structure alterations accompanying anodic dissolution processes of metals without or with 2D protective layers and selective dissolution (i.e. dealloying) of alloys, the atomic structure, orientation and surface hydroxylation of ultrathin passive films, the role of step edges at the exposed surface of oxide grains on the dissolution of passive films and the effect of grain boundaries in polycrystalline passive films acting as preferential sites of passivity breakdown, the differences in local electronic properties measured at passive films grain boundaries, and the structure of adlayers of organic inhibitor molecules.
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Submitted on : Thursday, November 7, 2019 - 3:50:20 PM
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Progress in Corrosion Science ...
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Vincent Maurice, Philippe Marcus. Progress in corrosion science at atomic and nanometric scales. Progress in Materials Science, Elsevier, 2018, 95, pp.132-171. ⟨10.1016/j.pmatsci.2018.03.001⟩. ⟨hal-02354119⟩



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