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Galvanic corrosion performance of high strength copper-nickel alloys in seawater

Galvanic corrosion performance of high strength copper-nickel alloys in seawater
Galvanic corrosion performance of high strength copper-nickel alloys in seawater
High strength copper-nickel (Cu-Ni-Mn-Al-Nb) alloys are widely used for marine applications due to their excellent resistance to seawater corrosion, high inherent resistance to biofouling and ease of fabrication. However, in-service experience has shown that these alloys may encounter variable performance worldwide due to local environmental conditions. In particular, the corrosion performance of high strength Cu-Ni alloys may be affected by the seawater environmental factors, which may include: biofouling, temperature, salinity, pH and dissolved oxygen content. This study reports an investigation into the galvanic corrosion performance between two wrought high strength copper-nickel alloys, with nickel contents of 15 and 19 %, regarding the influence of surface oxide films / deposits and biofouling. X-ray photoelectron spectroscopy was used to study the composition of the corrosion product films. Analyses of galvanic currents, coupled and decoupled potentials routinely monitored for seawater immersion over a period of 2 years are presented.
galvanic, corrosion, seawater, high strength copper-nickel alloy, xps
1466-8858
Barik, R.C.
56ec9884-0c15-4c28-9752-cb9966432ac1
Wharton, J.A.
965a38fd-d2bc-4a19-a08c-2d4e036aa96b
Wood, R.J.K.
d9523d31-41a8-459a-8831-70e29ffe8a73
Stokes, K.R.
5fb4e7f7-2f7e-4e6e-a045-6d7690626695
Barik, R.C.
56ec9884-0c15-4c28-9752-cb9966432ac1
Wharton, J.A.
965a38fd-d2bc-4a19-a08c-2d4e036aa96b
Wood, R.J.K.
d9523d31-41a8-459a-8831-70e29ffe8a73
Stokes, K.R.
5fb4e7f7-2f7e-4e6e-a045-6d7690626695

Barik, R.C., Wharton, J.A., Wood, R.J.K. and Stokes, K.R. (2009) Galvanic corrosion performance of high strength copper-nickel alloys in seawater. Journal of Corrosion Science and Engineering. (In Press)

Record type: Article

Abstract

High strength copper-nickel (Cu-Ni-Mn-Al-Nb) alloys are widely used for marine applications due to their excellent resistance to seawater corrosion, high inherent resistance to biofouling and ease of fabrication. However, in-service experience has shown that these alloys may encounter variable performance worldwide due to local environmental conditions. In particular, the corrosion performance of high strength Cu-Ni alloys may be affected by the seawater environmental factors, which may include: biofouling, temperature, salinity, pH and dissolved oxygen content. This study reports an investigation into the galvanic corrosion performance between two wrought high strength copper-nickel alloys, with nickel contents of 15 and 19 %, regarding the influence of surface oxide films / deposits and biofouling. X-ray photoelectron spectroscopy was used to study the composition of the corrosion product films. Analyses of galvanic currents, coupled and decoupled potentials routinely monitored for seawater immersion over a period of 2 years are presented.

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More information

Submitted date: 2009
Accepted/In Press date: 2009
Related URLs:
Keywords: galvanic, corrosion, seawater, high strength copper-nickel alloy, xps

Identifiers

Local EPrints ID: 65552
URI: http://eprints.soton.ac.uk/id/eprint/65552
ISSN: 1466-8858
PURE UUID: 76e1101d-5b2d-4a4b-b27c-565cfbd40ab0
ORCID for J.A. Wharton: ORCID iD orcid.org/0000-0002-3439-017X
ORCID for R.J.K. Wood: ORCID iD orcid.org/0000-0003-0681-9239

Catalogue record

Date deposited: 20 Feb 2009
Last modified: 23 Jul 2022 01:43

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Contributors

Author: R.C. Barik
Author: J.A. Wharton ORCID iD
Author: R.J.K. Wood ORCID iD
Author: K.R. Stokes

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