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The Impact of Microbiologically Influenced Corrosion on Protective Polymer Coatings.
Technical rept. 1 Oct 93-30 Sep 94,
UNIVERSITY OF SOUTHERN CALIFORNIA LOS ANGELES DEPT OF MATERIALS SCIENCE AND E NGINEERING
Pagination or Media Count:
Thirteen polymer coating systems on steel have been exposed to Pacific ocean water NS and artificial seawater AS. Impedance data and electrochemical noise data have been obtained for two-electrode systems on a weekly basis. For comparison, three-electrode impedance measurements have been performed on a monthly basis. Noise data were obtained several times each week. The impedance and noise data at the Port Hueneme, CA test site NS were collected by an on-site computer system with a multiplexer which is controlled via modem by a computer system at CEELUSC. In the laboratory a more traditional approach was used. Experimental data for two coating systems exposed to NS and AS for three months show that the experimental approach developed for data collection at a remote test site produced reliable results which were in general agreement with results obtained in the laboratory.
APPROVED FOR PUBLIC RELEASE