Accession Number : ADA293256

Title :   Computational Modeling of Coating Integrity Effects on Impressed Current Cathodic Protection System.

Descriptive Note : Final rept. Aug 93-Dec 94,

Corporate Author : NAVAL RESEARCH LAB WASHINGTON DC

Personal Author(s) : DeGiorgi, Virginia G. ; Hamilton, C. P.

PDF Url : ADA293256

Report Date : 28 MAR 1995

Pagination or Media Count : 16

Abstract : Coatings are often used in conjunction with impressed current cathodic protection (ICCP) systems to minimize the effect of corrosion on marine structures. The presence of a coating reduces the current required by an ICCP system. The integrity and efficiency of the coating determines the level of current reduction achieved over the bare metal condition. One of the difficulties is designing a combined coating and ICCP system is that coatings deteriorate with time in service due to a variety of factors including mechanical wear and organic attack. In this study computational modeling is used to determine the variation in current demand required for corrosion protection for increased levels of damage to the protective coating applied to the propellers of a surface ship. jg

Descriptors :   *COMPUTATIONS, *PROTECTIVE COATINGS, *CATHODIC PROTECTION, MATHEMATICAL MODELS, METALS, MECHANICAL PROPERTIES, SHIPS, DAMAGE, OCEAN SURFACE, ATTACK, EFFICIENCY, CORROSION INHIBITION, REDUCTION, ORGANIC MATERIALS, WEAR, MARINE ENGINEERING, PROPELLERS.

Subject Categories : Coatings, Colorants and Finishes
      Organic Chemistry
      Physical Chemistry
      Numerical Mathematics
      Marine Engineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE