Collection of electrochemical impedance and noise data for polymer-coated steel from remote test sites

Journal Article · Thu May 01 04:00:00 EDT 1997 · Corrosion

DOI:https://doi.org/10.5006/1.3280484· OSTI ID:495440

Xiao, H; Han, L T; Lee, C C; Mansfeld, F ^[1]

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1. Univ. of Southern California, Los Angeles, CA (United States)

Degradation of 13 polymer coating systems on steel exposed to natural (NS) and artificial seawater (AS) was monitored using electrochemical impedance spectroscopy (EIS) and electrochemical noise analysis (ENA). Marine test sites were Port Hueneme, California, and Key West, Florida. An approach was developed to obtain electrochemical impedance and noise data from test sites via modem from the laboratory. A multiplexer was used to collect data at the test sites for the different systems. Impedance data were collected once a week, while noise data were measured twice a week. Potential and current noise data were determined simultaneously. Representative data from exposure to NS and AS for 7 months are presented for four coating systems. The long-term objective of this project is to determine the impact of microorganisms on degradation of protective properties of polymer coatings on steel during exposure to NS.

• Sponsoring Organization: Office of Naval Research, Washington, DC (United States)
• OSTI ID: 495440
• Journal Information: Corrosion, Journal Name: Corrosion Journal Issue: 5 Vol. 53; ISSN 0010-9312; ISSN CORRAK
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
42 ENGINEERING
BIOLOGICAL FOULING
CORROSION PROTECTION
CORROSION RESISTANCE
CORROSIVE EFFECTS
DATA ACQUISITION SYSTEMS
EXPERIMENTAL DATA
MICROORGANISMS
POLYMERS
PROTECTIVE COATINGS
SEAWATER
STEELS