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Different methods of measuring synergy between cavitation erosion and corrosion for nickel aluminium bronze in 3.5% NaCl solution

Different methods of measuring synergy between cavitation erosion and corrosion for nickel aluminium bronze in 3.5% NaCl solution
Different methods of measuring synergy between cavitation erosion and corrosion for nickel aluminium bronze in 3.5% NaCl solution
In order to understand the combined detrimental effects of cavitation erosion and corrosion in seawater on a conventional marine alloy, nickel aluminium bronze, five different methods were employed to obtain synergism. The experiments were conducted using an ultrasonic vibratory horn functioning at 19.5 kHz frequency and 80 μm ± 0.2 μm peak-to-peak amplitude. The test methods used to obtain the synergy included gravimetric mass loss, volumetric, mean depth of penetration rate, and potentiodynamic polarization techniques. The cavitated surfaces were microstructurally characterized via scanning electron microscopy. NAB was seen to suffer from selective phase attack, resulting in increased material removal especially in the presence of corrosive environment. Synergism was found to range between 6 and 74% under different test methods.
cavitation, erosion, erosion-corrosion, synergism
0301-679X
Basumatary, Jahnabi
f68916bd-e5d9-432d-92dd-e33c30330fa3
Wood, Robert
d9523d31-41a8-459a-8831-70e29ffe8a73
Basumatary, Jahnabi
f68916bd-e5d9-432d-92dd-e33c30330fa3
Wood, Robert
d9523d31-41a8-459a-8831-70e29ffe8a73

Basumatary, Jahnabi and Wood, Robert (2020) Different methods of measuring synergy between cavitation erosion and corrosion for nickel aluminium bronze in 3.5% NaCl solution. Tribology International, 147, [104843]. (doi:10.1016/j.triboint.2017.08.006).

Record type: Article

Abstract

In order to understand the combined detrimental effects of cavitation erosion and corrosion in seawater on a conventional marine alloy, nickel aluminium bronze, five different methods were employed to obtain synergism. The experiments were conducted using an ultrasonic vibratory horn functioning at 19.5 kHz frequency and 80 μm ± 0.2 μm peak-to-peak amplitude. The test methods used to obtain the synergy included gravimetric mass loss, volumetric, mean depth of penetration rate, and potentiodynamic polarization techniques. The cavitated surfaces were microstructurally characterized via scanning electron microscopy. NAB was seen to suffer from selective phase attack, resulting in increased material removal especially in the presence of corrosive environment. Synergism was found to range between 6 and 74% under different test methods.

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Leeds_Lyon-Tribology_International_2017 - Accepted Manuscript
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Accepted/In Press date: 4 August 2017
e-pub ahead of print date: 9 August 2017
Published date: July 2020
Keywords: cavitation, erosion, erosion-corrosion, synergism

Identifiers

Local EPrints ID: 413391
URI: http://eprints.soton.ac.uk/id/eprint/413391
ISSN: 0301-679X
PURE UUID: 49ecfbfe-7b5d-44d3-8c45-0c37f4e81452
ORCID for Robert Wood: ORCID iD orcid.org/0000-0003-0681-9239

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Date deposited: 23 Aug 2017 16:31
Last modified: 28 Apr 2022 06:02

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Contributors

Author: Jahnabi Basumatary
Author: Robert Wood ORCID iD

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