The Impact of Sulfate-Reducing Bacteria on Welded Copper-Nickel Seawater Piping Systems
Abstract
Field and laboratory experiments were designed to evaluate corrosion in welds and heat-affected zones in copper/nickel seawater piping systems exposed to estuarine water and seawater. The localized corrosion was shown to be due to the following sequence of events: 1) metal segregation during heating processes; 2) settlement of sulfide-producing bacteria in welds; 3) sulfide derivatization; 4) disruption of the surface films by turbulence and 5) formation of adjacent cathodic and anodic areas. Metallic segregation in welded areas was detected by an X-ray spectrometer before the welds were exposed to estuarine water. Within the crevices, occlusions, and surface irregularities of butt and socket welds unique environments of microbial colonization existed. Reprints.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1988
- Accession Number
- ADA204956
Entities
People
- Brenda J. Little
- John Jacobus
- Pat Wagner
Organizations
- United States Naval Research Laboratory