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Using ultrasound to increase copper and nickel dissolution and prevent passivation using concentrated ionic fluid.

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posted on 2024-02-08, 14:23 authored by CE Elgar, S Ravenhill, P Hunt, B Jacobson, A Feeney, P Prentice, KS Ryder, Andrew Abbott
This paper uses targeted ultrasound on a surface undergoing anodic dissolution. The aim of these experiments was to etch metals that would normally passivate. The study was carried out in deep eutectic solvents (DESs) as these are technologically useful for metal processing but suffer the disadvantages of being viscous and hence have slow mass transport which results in metal passivation. Linear sweep voltammetry showed a linear current-voltage response at potentials anodic (more positive) of the oxidation potential under sonication. Passivation was observed in silent conditions. It was also shown that the dissolution current was roughly 14 times larger under sonication. High speed imaging showed asymmetric bubble collapse leading to enhanced removal of material from the surface with etch rates as high as 3.8 μm.min–1 under ultrasonic conditions.

History

Author affiliation

College of Science & Engineering/Chemistry

Version

  • VoR (Version of Record)

Published in

Electrochimica Acta

Volume

476

Pagination

143707

Publisher

Elsevier BV

issn

0013-4686

Copyright date

2023

Available date

2024-02-08

Language

en

Deposited by

Professor Andy Abbott

Deposit date

2024-02-08

Data Access Statement

Data will be made available on request.

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