Tubercles and Localized Corrosion on Carbon Steel
Abstract
The chemistry, mineralogy and microbiology of tubercles on cast iron and carbon steel were investigated. Tubercles, from diverse fresh water environments and of varying ages, consistently had an outer crust of goethite and lepidocrocite and an inner shell of magnetite. Core regions differed in structure, composition and chemistry. The presence of tubercles on carbon steel and cast iron cannot be used to conclude localized corrosion directly under the tubercles or a role for bacteria in their formation.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 2010
- Accession Number
- ADA537293
Entities
People
- Brenda J. Little
- Jason S. Lee
- Richard D Ray
Organizations
- United States Naval Research Laboratory