The U.S. Navy is considering several stainless steel alloys and other non-ferrous alloys for use in specific marine structures. The objective of this study was to find an environmentally acceptable anti-corrosion coating system suitable for these marine structures and for
application to the alloys for which they were to be applied. In addition to the anti-corrosion coating system, these materials must be coated with a suitable anti-fouling topcoat. Historically, many corrosion resistant alloys have remained un-coated in-service, because they have inherent corrosion resistant properties that preclude the use of a protective coating. While these materials will be cathodically protected in-service, the necessity of incorporating an antifouling coating presents several significant requirements associated with proper anti-corrosion coating selection, application and performance on these alloys. Therefore, it is
important to determine how these alloys and coatings will perform in seawater, both uncoated and coated with candidate anti-corrosive coating systems.
Keywords: duplex stainless steel, crevice corrosion, galvanic corrosion, natural seawater, titanium, primers, zinc-rich epoxy, coatings, alternate immersion, accelerated exposure, adhesion strength, freely corroding, organic zinc, inorganic zinc.