FASTENERS IN MARINE SERVICE

In this study, the galvanic effect of non-ferrous fasteners materials with similar base plate were investigated. Five candidate nickel based fastener materials were immersed in natural flowing seawater at ambient temperature and pressure. These materials were electrically attached to Alloy 625 (NO6625) with greater than ten times the surface area. Corrosion currents and open circuit potential were measured for twenty-eight to one hundred and five days. Corrosion rates were calculated from nominal current densities and are presented. Results indicated that nickel base fasteners alloys may suffer from galvanic corrosion even in cases where open circuit potentials were similar to the structural material.

• Supplemental Notes:
  • OTC 91, 23rd Annual Offshore Technology Conf; 6-9 May 1991; Houston, Tx, USA. Procs. Vol 2, Ppr OTC 6585, p 215 [6 p, 3 ref, 2 tab, 4 fig]
• Authors:
  • Thomas, E D
  • Hogan, E A
  • Lucas, K E
• Publication Date: 1991

Language

• English

Subject/Index Terms

• TRT Terms: Corrosion tests; Fasteners; Galvanic corrosion
• Subject Areas: Marine Transportation; Materials;

Filing Info

• Accession Number: 00701341
• Record Type: Publication
• Source Agency: British Maritime Technology
• Files: TRIS
• Created Date: Aug 14 1995 12:00AM