PERFORMANCE OF VARIOUS COATING SYSTEMS IN A MARINE ENVIRONMENT

Report on various coatings and their performance in test made over a 7 year period from 3/62 to 8/69, with an evaluation of the last two year period from 7/67 to 8/69. The test was conducted in salt water south of Long Island, New York, using mild steel under various degrees of exposure. The test examined varying types and degrees of surface preparation, priming, and top coating. Primers ranged from organic and inorganic zinc, through epoxy polyamide and amine, to vinyl and acrylics. Top coats included epoxy compounds and vinyls. Results are in table form with the conclusion that 1/2 to 1-1/2 mils of zinc primer is sufficient, with organic zinc being better, and that zinc does not blister as the epoxy does. A near white metal blasted surface is sufficient for most severe exposures when preparing the surface. Comparative cost analysis given, with inorganic zinc without top coat being the least expensive.

• Supplemental Notes:
  • 4 Tables of Results Data
• Corporate Authors:

  National Association of Corrosion Engineers

  2400 West Loop South
  Houston, TX  United States  77027
• Authors:
  • Singleton Jr, Walter T
• Publication Date: 1970-11

Media Info

• Features: Photos;
• Pagination: p. 37-43
• Serial:
  • Materials Protection and Performance
  • Volume: 9
  • Issue Number: 11
  • Publisher: National Association of Corrosion Engineers

Subject/Index Terms

• TRT Terms: Anticorrosion coatings; Coatings; Corrosion; Corrosion tests; Engineering economy; Zinc coatings
• Old TRIS Terms: Corrosion economics
• Subject Areas: Marine Transportation; Materials;

Filing Info

• Accession Number: 00015535
• Record Type: Publication
• Source Agency: United States Merchant Marine Academy
• Files: TRIS
• Created Date: May 19 1972 12:00AM