Spatial Relationships between Marine Bacteria and Localized Corrosion on Steels.
Abstract
The role that bacteria play in producing/influencing anodic and cathodic corrosion reactions has been documented in the literature on microbiologically influenced corrosion (MIC). However, the impact of established anodic and cathodic polarizations on deposition or settlement of bacteria has not been adequately addressed. One of the most serious challenges in diagnosis of MIC is differentiation between biological and abiological processes. Most MIC investigations determine spatial relationships between bacteria and corrosion products using microscopy or microbiological diagnostic kits. Spatial relationships are then interpreted as casual. Results from laboratory and field experiments demonstrate that spatial relationships cannot be interpreted as causal. Anodic reactions/products influence the distribution of marine bacteria on both carbon and stainless steel. The attraction of bacteria to anodic sites does not depend on viability of the organisms or concentration of the electrolyte.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1999
- Accession Number
- ADA369382
Entities
People
- B. J. Littie
- C. C. Lee
- J. Jones-meehan
- R. I. Ray
- R. K. Pope
Organizations
- United States Naval Research Laboratory