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The environment factors affecting the performance of nickel-aluminum bronze (NAB)

The environment factors affecting the performance of nickel-aluminum bronze (NAB)
The environment factors affecting the performance of nickel-aluminum bronze (NAB)
Corrosion and galvanic compatibility studies of a cast nickel-aluminum bronze, NAB (UNS C95800), coupled with an area ratio 1:1 to titanium and a cupronickel (Cu-15Ni) alloy, have been made in brackish seawater. The galvanic currents and mixed-potentials have been routinely monitored for a period of 6 months (from January ’03 to June ’03) as part of a 3 year program. Additionally, environmental factors including dissolved oxygen, seawater temperature and salinity, have been studied in order to assess their affects on the corrosion performance of NAB in natural seawater. Accelerated corrosion rates for the NAB coupled to titanium or Cu-Ni alloy have occurred compared with the uncoupled NAB. Subsequent testing has shown the accelerated corrosion rates are linked to the biofouling season and the local test environment. Corrosion rates decrease at the end of the foulingseason. Decoupled potentials indicate a significant polarization of the cathode component, which has been attributed to a surface modification of the titanium and Cu-Ni alloy by the formation of a biofilm. In the case of the Cu-Ni, an enrichment in iron and nickel within the oxide film may also be involved.
1-14
Barik, Rakesh
e7ec8fb7-cfc4-4476-b3fd-490cfab7fe23
Wharton, Julian A.
965a38fd-d2bc-4a19-a08c-2d4e036aa96b
Wood, Robert J.K.
d9523d31-41a8-459a-8831-70e29ffe8a73
Stokes, Keith R.
5fb4e7f7-2f7e-4e6e-a045-6d7690626695
Barik, Rakesh
e7ec8fb7-cfc4-4476-b3fd-490cfab7fe23
Wharton, Julian A.
965a38fd-d2bc-4a19-a08c-2d4e036aa96b
Wood, Robert J.K.
d9523d31-41a8-459a-8831-70e29ffe8a73
Stokes, Keith R.
5fb4e7f7-2f7e-4e6e-a045-6d7690626695

Barik, Rakesh, Wharton, Julian A., Wood, Robert J.K. and Stokes, Keith R. (2004) The environment factors affecting the performance of nickel-aluminum bronze (NAB). Corrosion 2004. pp. 1-14 .

Record type: Conference or Workshop Item (Paper)

Abstract

Corrosion and galvanic compatibility studies of a cast nickel-aluminum bronze, NAB (UNS C95800), coupled with an area ratio 1:1 to titanium and a cupronickel (Cu-15Ni) alloy, have been made in brackish seawater. The galvanic currents and mixed-potentials have been routinely monitored for a period of 6 months (from January ’03 to June ’03) as part of a 3 year program. Additionally, environmental factors including dissolved oxygen, seawater temperature and salinity, have been studied in order to assess their affects on the corrosion performance of NAB in natural seawater. Accelerated corrosion rates for the NAB coupled to titanium or Cu-Ni alloy have occurred compared with the uncoupled NAB. Subsequent testing has shown the accelerated corrosion rates are linked to the biofouling season and the local test environment. Corrosion rates decrease at the end of the foulingseason. Decoupled potentials indicate a significant polarization of the cathode component, which has been attributed to a surface modification of the titanium and Cu-Ni alloy by the formation of a biofilm. In the case of the Cu-Ni, an enrichment in iron and nickel within the oxide film may also be involved.

Full text not available from this repository.

More information

Published date: 2004
Venue - Dates: Corrosion 2004, 2004-01-01

Identifiers

Local EPrints ID: 22681
URI: https://eprints.soton.ac.uk/id/eprint/22681
PURE UUID: 55d4fd9b-1a3a-4e2a-b02b-b4dc528d3e7e
ORCID for Julian A. Wharton: ORCID iD orcid.org/0000-0002-3439-017X
ORCID for Robert J.K. Wood: ORCID iD orcid.org/0000-0003-0681-9239

Catalogue record

Date deposited: 30 Mar 2006
Last modified: 06 Jun 2018 13:06

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