ELECTROCHEMICAL AND CONDUCTIMETRIC TECHNIQUES FOR PREDICTING PAINT PERFORMANCE

The presence of invisible contaminants on apparently clean surfaces has been shown to be detrimental to subsequent paint performance and is responsible for increases in hull roughness and fuel consumption of tankers. The authors describe colorimetric, potentiometric and conductimetric techniques that make it possible to identify contaminants and measure their concentration on blast-cleaned steels. A new development in the evaluation of inorganic zinc silicate paints in cargo/ballast tanks is also discussed. This is a potentiometric test that is capable of assessing in situ the amount of active free zinc remaining in a coating, and hence, enables the estimation of the useful life of the coating.

Media Info

  • Features: References;
  • Pagination: 10p.

Subject/Index Terms

Filing Info

  • Accession Number: 00657501
  • Record Type: Publication
  • Source Agency: Maritime Technical Information Facility
  • Files: TRIS
  • Created Date: Jul 21 1994 12:00AM