Electrochemical noise measurement for determining corrosion rates
- DuPont Experimental Station, Wilmington, DE (United States)
Electrochemical noise measurements (ENM), linear polarization tests and mass loss measurements were performed in sulfuric acid, acetic acid and other solutions. The ENM data were converted to corrosion rates by calculating the noise resistance, R{sub n} = {sigma}V/{sigma}I where {sigma}V and {sigma}I are the standard deviations of the potential and current. Good correlation among the three methods was obtained for low to moderate corrosion rates, but poor correlation was observed for high rates. ENM has proven valuable for determining corrosion rates in low-conductivity solutions, which are not suitable for linear polarization resistance (LPR) testing, and for measuring very low corrosion rates in which mass loss tests would have required at least 30 days exposure to provide meaningful results.
- OSTI ID:
- 490795
- Report Number(s):
- CONF-9405117-; ISBN 0-8031-2032-X; TRN: IM9729%%46
- Resource Relation:
- Conference: 1. international symposium on electrochemical noise measurements for corrosion applications, Montreal (Canada), 15-16 May 1997; Other Information: PBD: 1996; Related Information: Is Part Of Electrochemical noise measurement for corrosion applications; Kearns, J.R. [ed.] [Alcoa Technical Center, Alcoa Center, PA (United States)]; Scully, J.R. [ed.] [Univ. of Virginia, Charlottesville, VA (United States)]; Roberge, P.R. [ed.] [Royal Military College of Canada, Kingston, Ontario (Canada)]; Reichert, D.L. [ed.] [DuPont Experimental Station, Wilmington, DE (United States)]; Dawson, J.L. [ed.] [CAPCIS Ltd., Manchester (United Kingdom)]; PB: 471 p.; ASTM special technical publication, 1277
- Country of Publication:
- United States
- Language:
- English
Similar Records
Characterization of prerusted steels in some Ibero-American atmospheres by electrochemical potential noise measurement
Electrochemical noise monitoring of corrosion in natural gas production plants