STP1300

    Modeling of Marine Corrosion of Steel Specimens

    Published: Jan 1997


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    Abstract

    Phenomenological modeling of the long term general corrosion of mild and low alloy steel specimens under marine conditions is considered, using weight loss as a function of time. A conceptual model for immersion corrosion, tidal corrosion and atmospheric corrosion under marine conditions is proposed. The model uses accepted theories for short term surface corrosion and employs modern understanding of the action of bacterial colonisation of the surfaces of specimens, including the development of anaerobic conditions. Kinetic, diffusion, nutrient and anaerobic components of the model are identified and mathematical descriptions given. The model is compared to some data available in the literature. Some observations are made about data requirements for further development of models of the type proposed.

    Keywords:

    corrosion, modeling, marine, immersed, half-tide, atmospheric, diffusion, kinetic, nutrients, anaerobic


    Author Information:

    Melchers, RE
    Professor of Civil Engineering, The University of Newcastle, NSW


    Paper ID: STP11356S

    Committee/Subcommittee: G01.09

    DOI: 10.1520/STP11356S


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