Corrosion performance of high damping alloys in 3.5% sodium chloride solution
Perkins, Jeffery Arthur
MetadataShow full item record
The electrochemical nature of corrosion provides a means of determining an almost instantaneous corrosion rate. Corrosion rate and the nature of corrosion attack were investigated for several high damping alloys based on the Cu-Mn, Fe-Cr-Al, Fe-Cr- Mo, and Cu-Zn systems in 3.5% NaCl solution. The results of Potentiodynamic polarization and polarization resistance measurements were compared with the results of actual sea exposures. A zero resistance ammeter technique was used to measure the galvanic currents between galvanically coupled metals. The magnitude of the galvanic current provide an indication of the severity of galvanic corrosion which occurs in a 3.5% NaCl environment. Scanning electron microscopy (SEM) was used to determine the nature of corrosive attack and the extent of film formation on the surface of each corroding alloy. Results from Laboratory and actual sea exposures showed that the Fe-Cr-Al and Fr-Cr- Mo high damping alloys experienced severe localized corrosion and pitting. 630 Bronze and Cu-Mn-Al based alloys indicate low to moderate corrosion rates.
Showing items related by title, author, creator and subject.
Escue, William David. (1987-06);Corrosion rates and the nature of corrosive attack were investigated for several high damping alloys, including alloys based on the Cu-Mn, Fe-Cr-Al, Fe-Cr-Mo, Ti-Ni, and Cu-Zn-Al systems. Rates and modes of attack were ...
Treeman, Nicole M. (Monterey California. Naval Postgraduate School, 2005-06);Shadow corrosion of zirconium alloy fuel cladding in BWR environments, the phenomenon in which accelerated corrosion is experienced when the cladding surface is in close proximity to other metals, has become a potential ...
Elkin, Leslie R. (Monterey, California: Naval Postgraduate School, 1990);The corrosion mechanisms and behavior of a P-130x graphite fiber reinforced 6063 aluminum composite laminate were studied. Electrochemical and total immersion tests were performed on the composite in 3.5% sodium chloride ...