STP576

    Current Density Distribution on Composite Structures Under Cathodic Protection in Seawater

    Published: Jan 1976


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    Abstract

    The distribution of cathodic protection current between members of copper-steel and stainless steel-aluminum galvanic couples was found to vary by ratio of 940 to 0.05 as the relative areas were varied from 100:1 to 1:100. Polarization curves and the distribution of current are given. Above a 1:1 ratio of cathode to anode, cathodic protection does not appear to be practical.

    Keywords:

    corrosion, bimetallic couples, cathodic protection, polarization, dissimilar metal corrosion, composite structures, current density


    Author Information:

    Compton, K. G.
    Professor of Ocean Engineering, University of Miami, Miami, Fla.


    Paper ID: STP41396S

    Committee/Subcommittee: G01.09

    DOI: 10.1520/STP41396S


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