Detection of electrode asymmetry in electrochemical noise analysis

Author

Lowe, A. ; Eren, H. ; Fung, Chun Che

Author_Institution

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

Volume

1

fYear

2001

fDate

2001

Firstpage

309

Abstract

The electrochemical noise resistance is a calculation that can be used for estimating the rate of corrosion of a pair of metal samples purely from the electrochemical noise that they generate. Ideally these metal samples (electrodes) would be identical, but it is not uncommon, for various reasons, for the electrodes to be significantly different. In that case, the theory linking the noise resistance to the more conventional electrochemical parameter, the polarisation resistance, breaks down. This link is important because it is only via the polarisation resistance that noise resistance can be used for corrosion rate estimation. It is therefore important to be able to detect an asymmetric electrode pair. This paper describes how the cross correlation between voltage and current noise can be used to detect an asymmetry

Keywords

correlation methods; corrosion; electric resistance; electrochemical analysis; electrochemical electrodes; electrochemistry; random noise; asymmetric electrode pair; correlation coefficient; corrosion rate estimation; current noise; electrochemical noise analysis; electrochemical noise resistance; electrode asymmetry detection; polarisation resistance; voltage noise; Australia; Circuit noise; Corrosion; Current measurement; Electrical resistance measurement; Electrodes; Equations; Joining processes; Noise generators; Polarization;

fLanguage

English

Publisher

ieee

Conference_Titel

TENCON 2001. Proceedings of IEEE Region 10 International Conference on Electrical and Electronic Technology

Print_ISBN

0-7803-7101-1

Type

conf

DOI

10.1109/TENCON.2001.949603

Filename

949603