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.

Report Date:

1994-12-01

Pagination or Media Count:

16.0

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 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.

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