Accession Number:

ADA453181

Title:

Evaluation of Coatings Applied on Less Than Ideal Surfaces

Descriptive Note:

Research rept.

Corporate Author:

ASSOCIATED COATINGS CONSULTANTS INC GULFPORT MS

Personal Author(s):

Report Date:

1995-08-01

Pagination or Media Count:

49.0

Abstract:

The research objective of this project was to identify coating systems that can be applied over less than Near White Blast Cleaned SSPC-SP 10 steel surfaces that will perform well in a marine environment thus enabling ship forces to touch-up and maintain the corrosion control coating systems between overhauls. The research compared the performance of twenty-one coatings in various coating system combinations. Surface preparation techniques used were Hand Tool Cleaning SSPC-SP 2 , Power Tool Cleaning to Bare Metal SSPC-SP 11, and phosphoric acid conversion coatings. White Metal Blast Cleaning SSPC-SP 5 and Near White Metal Blast Cleaning SSPC-SP 10 were used as the control surface preparation. Navy Formula 150 was used as the control coating. Test environments included both simulated ballast tank immersion and marine atmospheric exposures at the NSRPs Jacksonville, Florida test site. Fifteen systems were tested in the simulated ballast tank, and seventeen systems were tested on a marine test rack at 450 South exposure. Coating systems were evaluated at one year intervals for three years. This report provides both the background technical information used to select candidate test materials and the results of three years of testing.

Subject Categories:

  • Coatings, Colorants and Finishes
  • Marine Engineering
  • Plastics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE