Chemical and electrochemical interactions on corroding metal surfaces [electronic resource].
- Washington, D.C. : United States. Dept. of Energy, 1994.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy
- Physical Description:
- 12 pages : digital, PDF file
- Additional Creators:
- Brookhaven National Laboratory
United States. Department of Energy
United States. Department of Energy. Office of Scientific and Technical Information
- The corrosion resistance of many metals and alloys depend on their ability to repassivate after breakdown of the passive film. Following breakdown localized corrosion takes place. The consequences of initiation events depends on many factors leading to a dissolution rate of the metal which may be continuous, intermittent or transitory. Major changes in the solution chemistry at the breakdown site must take place to enable active dissolution to take place and prevent repassivation. However, mass transfer of the dissolution products to the bulk environment often plays a decisive role. The composition of the environment is important. Some species inhibit while others stimulate the anodic dissolution. In the presence of particular cations, deposition slowly takes place on cathodic sites. Current density mapping measurements have been used to study pitting processes on iron and aluminum alloys. The effects of phosphate as an anodic inhibitor for steel and cerium as a cathodic inhibitor for aluminum are discussed in conjunction with related chemical processes.
- Published through SciTech Connect.
Meeting on electrochemical methods in corrosion research,Lisbon (Portugal),5-8 Sep 1994.
Isaacs, H.S.; Aldykiewicz, A.J. Jr.
- Funding Information:
View MARC record | catkey: 24047981