JOINT PREVENTION OF CORROSION BY PAINT COATINGS AND CATHODIC PROTECTION

The introduction gives a brief survey of the changing attitudes of the classification societies towards the use of ship paints and cathodic protection. The main part of the article covers the mechanism behind the corrosion preventive capability of paint coatings. It is related to the "inner" material structure of the paint coating, identifying the ohmic resistance as the most important factor. An explanation of the negative influence of the cathodic protection on the mechanism of paint protection is added and a certain reservation concerning the value of some published testing of cathodic protection and paint is recommended. The much overlooked aggravated degradation of the coating occurring when millscale, rust and iron oxide created by welding and other heat-treatment are present is emphasized. That Lloyd's from January 1978 has dispensed with cathodic protection on ship bottoms is registered as a recognition of the progress in the marine paint industry. Order from BSRA as No. 49,077.

  • Authors:
    • Eikers, E
  • Publication Date: 1978-4

Language

  • Danish

Media Info

  • Features: References;
  • Pagination: p. 97
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00182495
  • Record Type: Publication
  • Source Agency: British Ship Research Association
  • Files: TRIS
  • Created Date: Feb 3 1979 12:00AM