Corrosion Chemistry: Faraday Discussion

Themes Solid/Fluid Interface In this session, studies concerned with nanoscale elucidation of the structure and fundamental chemical processes (e.g. ion adsorption) at solid/fluid interfaces will be discussed. Particular attention will focus on the solid/aqueous solution interface, as it is of central importance to corrosion. Contributions will cover experimental work, with particular emphasis on in situ studies using state-of-the-art probes, and theoretical modeling. Corrosion Scales and Passive Films Substrate adhered corrosion scales and passive films, which can both significantly affect corrosion (e.g. a passive film can reduce corrosion to a negligible rate), will be the topics of discussion here. Experimental/theoretical studies of both engineering and model (e.g. single crystal) substrates will be presented. Relationships between the composition-structure-chemistry-corrosion resistance of the scales/films will be addressed, together with insight into processes governing their initiation and growth, including the impact of environmental conditions Localised Corrosion Spatially confined corrosion phenomena (e.g. pitting), which can lead to rapid failure of otherwise corrosion resistant substrates, will be of concern in this session. Studies aiming to understand at the nanoscale the combined influences of substrate microstructure/geometry, mechanical distortion, and fluid chemistry on local corrosion initiation/progression will be presented. Modeling of these processes will also feature, as prediction of their occurrence is of huge technological concern Corrosion Control To complement the above sessions, this final session will address nanoscale understanding of corrosion control methods. In particular, it will be concerned with approaches where chemistry plays a key role, namely coatings, paints, and corrosion inhibitors. Topics of discussion will centre on those critical to gain mechanistic insight into corrosion resistance performance, including substrate bonding, structure/morphology, interfacial transport, and degradation mechanisms.