Accession Number : ADA288896

Title :   The Impact of Microbiologically Influenced Corrosion on Protective Polymer Coatings.

Descriptive Note : Technical rept. 1 Oct 93-30 Sep 94,

Corporate Author : UNIVERSITY OF SOUTHERN CALIFORNIA LOS ANGELES DEPT OF MATERIALS SCIENCE AND E NGINEERING

Personal Author(s) : Mansfeid, F. ; Xiao, H. ; Han, L. T. ; Lee, C. C. ; Jones-Meehan, J.

PDF Url : ADA288896

Report Date : DEC 1994

Pagination or Media Count : 16

Abstract : 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 CEEL/USC. 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.

Descriptors :   *CORROSION, *POLYMERS, *PROTECTIVE COATINGS, *MICROBIOLOGY, EXPERIMENTAL DATA, MONITORING, SPECTROSCOPY, COMPUTERS, SITES, ELECTROCHEMISTRY, STEEL, COATINGS, RELIABILITY, ELECTRODES, DATA ACQUISITION, NOISE, PACIFIC OCEAN, MODEMS, IMPEDANCE, REMOTE AREAS, MULTIPLEXING, SEA WATER, TEST FACILITIES.

Subject Categories : Polymer Chemistry
      Microbiology
      Metallurgy and Metallography

Distribution Statement : APPROVED FOR PUBLIC RELEASE