Corrosion Characterization and Response to Cathodic Protection of Eight Wire-Rope Materials in Sea Water.
NAVAL RESEARCH LAB WASHINGTON D C
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The corrosion behavior and response to cathodic protection from zinc anodes have been studied on eight wire-rope materials during 790 days exposure in sea water at the NRL Marine Corrosion Research Laboratory, Key West, Florida. The titanium alloy 13V-11Cr-3Al, the nickel-base alloy, and the aluminized steel were inherently corrosion resistant. Based solely on corrosion resistance, their use would be suitable for two years total immersion in sea water even without cathodic protection. Unprotected phosphor bronze, galvanized steel, and copper-nickel clad stainless steels are not suitable for extended use in sea water. Phosphor bronze and galvanized steel would be satisfactory for long-term service if cathodically protected. The 9010 copper-nickel clad Type 304L stainless steel was essentially corrosion free when cathodically protected. Pitting was not eliminated on unclad Type 304L stainless steel even when cathodically protected. The 9010 copper-nickel clad Tyep 205 stainless steel showed localized corrosion on some of the wires when cathodically protected with a zinc anode. Modified author abstract
- Properties of Metals and Alloys
- Marine Engineering