Factors affecting the determination of electrochemical noise resistance

Tan, Y. J., Bailey, S. and Kinsella, B. 1999, Factors affecting the determination of electrochemical noise resistance, Corrosion, vol. 55, no. 5, pp. 469-475, doi: 10.5006/1.3284009.

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Title Factors affecting the determination of electrochemical noise resistance
Author(s) Tan, Y. J.ORCID iD for Tan, Y. J. orcid.org/0000-0002-0765-108X
Bailey, S.
Kinsella, B.
Journal name Corrosion
Volume number 55
Issue number 5
Start page 469
End page 475
Total pages 7
Publisher NACE International
Place of publication Houston, Tex.
Publication date 1999
ISSN 0010-9312
Keyword(s) Brine
Corrosion rate
Electrochemical measurement
Electrochemical noise
Polarization resistance
Sodium chloride
UNS G10350
Summary The similarity between electrochemical noise resistance (Rn) and polarization resistance (Rp) has been confirmed in many laboratories, and a new method for corrosion rate determination has been developed based upon this similarity. However, this method remains controversial. Some researchers have reported experimental results that did not support a similarity between Rp and Rn. Other researchers have found that this similarity does not hold true for every system. To address this controversy, factors affecting the measurement and calculation of Rn were investigated. Several factors - including instrument noise, direct current (DC) trend, noise sampling rates, and noise sampling duration - can affect the accuracy of Rn determination signiftcantly and, in some cases, can cause disagreement between Rn and Rp. It was recommended that a system check be carried out to avoid the influence of these factors.
Notes This paper was presented at CORROSION 1998 : The Annual NACE Corrosion Conference
Language eng
DOI 10.5006/1.3284009
Field of Research 091207 Metals and Alloy Materials
030604 Electrochemistry
030301 Chemical Characterisation of Materials
Socio Economic Objective 870302 Metals (e.g. Composites, Coatings, Bonding)
HERDC Research category C1.1 Refereed article in a scholarly journal
Persistent URL http://hdl.handle.net/10536/DRO/DU:30047794

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