Continuous corrosion rate measurement by noise resistance calculation

Author

Lowe, A. ; Eren, H. ; Tan, Y.J. ; Kinsella, B. ; Bailey, S.

Author_Institution

Sch. of Electr. & Comput. Eng., Curtin Univ. of Technol., Bentley, WA, Australia

Volume

50

Issue

5

fYear

2001

fDate

10/1/2001 12:00:00 AM

Firstpage

1059

Lastpage

1065

Abstract

A commonly employed method of corrosion rate measurement is to determine the electrochemical impedance of the corroding material. One technique for estimating the impedance is the noise impedance calculation. While it has been shown to yield useful results, there are a number of problems that require attention. This paper identifies some of those problems-specifically, those of detrending and resolution-and provides a solution that allows continuous, time-varying noise resistance and noise impedance calculations to be performed with known time, frequency, and magnitude resolutions. Applications to synthetic and experimental data are included as illustrations

Keywords

chemical variables measurement; condition monitoring; corrosion; corrosion testing; electric impedance measurement; electrochemistry; noise; surface chemistry; corrosion rate measurement; electrochemical impedance; electrochemical noise; noise impedance; time-varying noise resistance; Corrosion; Current measurement; Electrical resistance measurement; Electrodes; Frequency; Impedance measurement; Measurement standards; Noise measurement; Polarization; Voltage;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/19.963158

Filename

963158