The main objective with this paper is to present information about the effect of different surface finishes on the corrosion and aesthetic appearance of the duplex grade S32205 exposed at a marine test site in Dubai, UAE. The results obtained include the effect of characteristics such as surface roughness, surface treatment and surface orientation after several years of exposure.
Critical factors affecting intergranular corrosion in AA5XXX under atmospheric exposures. Cathodic kinetics play an important role in atmospheric or open circuit localized corrosion. Electrochemical experiments in thin film electrolytes were conducted to explain the corrosion morphology observed in lab exposures.
Pipeline Enhanced Corrosion Management Analysis (ECMA) was conducted over transmission pipelines that experienced considerable external metal loss after a short time in operation. Pipeline historical and current data, pipe design, construction, soil, corrosion control, monitoring, inspection and operational were reviewed.
A quantitative technique was developed to assess the extent of corrosion damage in two sets of coated lap coupons: one exposed at several outdoor test sites and one that underwent both neutral and acidified salt fog testing. Techniques includeded imaging and analyzing the corroded surfaces with 3D optical profilometry.