The Anatomy of Tubercles on 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
- Jan 01, 2011
- Accession Number
- ADA547604
Entities
People
- Brenda J. Little
- J. Lee
- R. I. Ray
- T. L. Gerke
Organizations
- United States Naval Research Laboratory