CORROSION CONTROL OF GALVANICALLY INCOMPATIBLE METALS IN SEA WATER

The increased complexity of the equipment being used in the ocean services often requires the galvanic combination of incompatible materials. These metal combinations are subject to a great deal of corrosion while in service. Therefore, it is essential that a reliable method of corrosion control be developed. The possible controls which were tested and evaluated in this report were the elimination of salt water from the service area, de-oxygenation of the sea water, chelation of copper ions, the use of corrosion inhibitors, and the use of protective coatings (hard anodizing). Tests of controls were performed on aluminum base alloys, monel 400, brass, stainless steel, and titanium in a closed salt water system. Of the tested controls only the de-oxygenation of the sea water and the use of corrosion inhibitors met with success. De-oxygenation was the most effective control. Corrosion inhibitors require further testing and evaluation.

• Supplemental Notes:
  • This paper was supported by the Naval Ordnance Systems Command, Dept of the Navy.
• Corporate Authors:

  National Association of Corrosion Engineers

  2400 West Loop South
  Houston, TX  United States  77027
• Authors:
  • Fink, F
  • DiBari, G
  • White, E
  • Boyd, W
  • Haynie, F
• Publication Date: 1971-7

Media Info

• Features: Figures; Tables;
• Pagination: p. 17-22
• Serial:
  • Materials Protection and Performance
  • Volume: 10
  • Issue Number: 7
  • Publisher: National Association of Corrosion Engineers

Subject/Index Terms

• TRT Terms: Corrosion; Corrosion protection; Galvanic corrosion; Protective coatings
• Subject Areas: Construction; Marine Transportation;

Filing Info

• Accession Number: 00019597
• Record Type: Publication
• Source Agency: United States Merchant Marine Academy
• Files: TRIS
• Created Date: Nov 25 1971 12:00AM