Accession Number : ADA329857

Title :   Evaluation of Coating Systems for Nonferrous Metal Surfaces.

Descriptive Note : Final rept.,

Corporate Author : CONSTRUCTION ENGINEERING RESEARCH LAB (ARMY) CHAMPAIGN IL

Personal Author(s) : Race, Timothy D.

PDF Url : ADA329857

Report Date : SEP 1997

Pagination or Media Count : 30

Abstract : Both aluminum and galvanized steel are used on many Corps of Engineers projects. Civil Works Guide Specification CWGS-09940 specifies coatings for the protection of these nonferrous metal surfaces in various applications, but some of these coatings are no longer in compliance with current or anticipated government restrictions on volatile organic compound (VOC) content. The U.S. Army Construction Engineering Research Laboratories (USACERL) was tasked to study select coating systems and identified alternative materials that can meet CWGS-09940 performance specifications while conforming to regulatory VOC content levels. Alternatives were to be sought from commercially available products or existing Federal Specification paints in order to conform with current Federal acquisition reform initiatives. The performance of selected test and control coatings was evaluated on aluminum and galvanized steel surfaces in laboratory tests including fresh water immersion and accelerated cyclic corrosion exposures. Exposed test panels were evaluated for adhesion, blistering, delamination, undercutting at the scribe, and corrosion. The research identified several suitable commercially available alternative coatings for nonferrous metal surfaces used in various environmental exposures. Based on the results of this study, revisions of CWGS-09940 are recommended.

Descriptors :   *CORROSION INHIBITION, *PROTECTIVE COATINGS, SPECIFICATIONS, SURFACE PROPERTIES, ALUMINUM, LIQUID IMMERSION TESTS, ORGANIC COMPOUNDS, ARMY CORPS OF ENGINEERS, VOLATILITY.

Subject Categories : Organic Chemistry
      Coatings, Colorants and Finishes
      Metallurgy and Metallography

Distribution Statement : APPROVED FOR PUBLIC RELEASE