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Investigation of erosion-corrosion processes using electrochemical noise measurements

Investigation of erosion-corrosion processes using electrochemical noise measurements
Investigation of erosion-corrosion processes using electrochemical noise measurements
This paper presents an example-based discussion of erosion–corrosion and flow corrosion processes that have been identified using electrochemical noise measurements. Various single and dual phase corrosion and erosion–corrosion experiments on austenitic stainless steels and various thermally sprayed coatings using jet impingement and pipe flow rigs are discussed. Localised corrosion events, metastable and propagating pitting, passive and general corrosion processes have been identified under various flow conditions of NaCl solutions. Oscillations in the electrochemical potential noise signals have been related to an erosion-enhanced corrosion synergistic effect. Electrochemical noise measurements show responses to electrolyte permeation of the coating, coating erosion penetration and substrate activity under erosion–corrosion conditions.
erosion–corrosion, electrochemical noise measurements, coatings, corrosion process discrimination
0301-679X
631-641
Wood, R.J.K.
d9523d31-41a8-459a-8831-70e29ffe8a73
Wharton, J.A.
965a38fd-d2bc-4a19-a08c-2d4e036aa96b
Speyer, A.J.
12c7b482-30e6-4689-aa13-16dc8d795b1e
Tan, K.S.
54c01254-5cd1-4ab5-9f43-8724c24c2242
Wood, R.J.K.
d9523d31-41a8-459a-8831-70e29ffe8a73
Wharton, J.A.
965a38fd-d2bc-4a19-a08c-2d4e036aa96b
Speyer, A.J.
12c7b482-30e6-4689-aa13-16dc8d795b1e
Tan, K.S.
54c01254-5cd1-4ab5-9f43-8724c24c2242

Wood, R.J.K., Wharton, J.A., Speyer, A.J. and Tan, K.S. (2002) Investigation of erosion-corrosion processes using electrochemical noise measurements. Tribology International, 35 (10), 631-641. (doi:10.1016/S0301-679X(02)00054-3).

Record type: Article

Abstract

This paper presents an example-based discussion of erosion–corrosion and flow corrosion processes that have been identified using electrochemical noise measurements. Various single and dual phase corrosion and erosion–corrosion experiments on austenitic stainless steels and various thermally sprayed coatings using jet impingement and pipe flow rigs are discussed. Localised corrosion events, metastable and propagating pitting, passive and general corrosion processes have been identified under various flow conditions of NaCl solutions. Oscillations in the electrochemical potential noise signals have been related to an erosion-enhanced corrosion synergistic effect. Electrochemical noise measurements show responses to electrolyte permeation of the coating, coating erosion penetration and substrate activity under erosion–corrosion conditions.

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More information

Published date: 2002
Additional Information: Received 31 July 2001; revised 15 December 2001; accepted 20 December 2001. Available online 6 September 2002.
Keywords: erosion–corrosion, electrochemical noise measurements, coatings, corrosion process discrimination

Identifiers

Local EPrints ID: 22075
URI: http://eprints.soton.ac.uk/id/eprint/22075
ISSN: 0301-679X
PURE UUID: 7e52c41e-003d-47fe-a14e-bf91d0a381ee
ORCID for R.J.K. Wood: ORCID iD orcid.org/0000-0003-0681-9239
ORCID for J.A. Wharton: ORCID iD orcid.org/0000-0002-3439-017X

Catalogue record

Date deposited: 21 Mar 2006
Last modified: 18 Feb 2021 16:50

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Contributors

Author: R.J.K. Wood ORCID iD
Author: J.A. Wharton ORCID iD
Author: A.J. Speyer
Author: K.S. Tan

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