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dc.contributor.author
Fantauzzi, Marzia
dc.contributor.author
Elsener, Bernhard
dc.contributor.author
Cocco, Federica
dc.contributor.author
Passiu, Cristiana
dc.contributor.author
Rossi, Antonella
dc.date.accessioned
2020-05-07T08:32:27Z
dc.date.available
2020-05-07T02:48:53Z
dc.date.available
2020-05-07T08:32:27Z
dc.date.issued
2020-04
dc.identifier.issn
2296-2646
dc.identifier.other
10.3389/fchem.2020.00272
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/413430
dc.identifier.doi
10.3929/ethz-b-000413430
dc.description.abstract
The present work focuses on the characterization of brass surfaces after contact with artificial saliva solution at pH 7.4 and phosphate buffer solution at pH 7 simulating two extreme conditions that might occur when playing ancient brass wind instruments in the context of historically informed performance practice. The composition and the morphology of the film formed following the contact with the solutions for 1, 3, and 16 h were investigated by ex situ X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM) to shed a light on the surface changes upon time. In situ electrochemical impedance spectroscopy (EIS) was used to study the mechanism of corrosion and protection of the alloys. The results could be interpreted using a reliable equivalent electrical circuit; they provided evidence that the alloys behave differently when in contact to the various solutions. In saliva solution the formation on the brass surface of a thick surface film was observed, composed of crystallites of about 200 nm size mainly composed of CuSCN and Zn3(PO4)2. This layer hinders the alloy dissolution. The contact of the alloys with the buffer solution originated a much thinner layer composed of Cu2O, ZnO, and a small amount of Zn3(PO4)2. This film is rapidly formed and does not evolve upon time in a protective film.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
Frontiers Research Foundation
en_US
dc.rights.uri
http://creativecommons.org/licenses/by/4.0/
dc.subject
brass alloys
en_US
dc.subject
nanostructured surface film
en_US
dc.subject
neutral solutions
en_US
dc.subject
electrochemical impedance spectroscopy (EIS)
en_US
dc.subject
X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM)
en_US
dc.title
Model Protective Films on Cu-Zn Alloys Simulating the Inner Surfaces of Historical Brass Wind Instruments by EIS and XPS
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution 4.0 International
dc.date.published
2020-04-15
ethz.journal.title
Frontiers in Chemistry
ethz.journal.volume
8
en_US
ethz.pages.start
272
en_US
ethz.size
14 p.
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.identifier.wos
ethz.identifier.scopus
ethz.publication.place
Lausanne
en_US
ethz.publication.status
published
en_US
ethz.date.deposited
2020-05-07T02:48:58Z
ethz.source
SCOPUS
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2020-05-07T08:32:41Z
ethz.rosetta.lastUpdated
2021-02-15T10:53:27Z
ethz.rosetta.versionExported
true
ethz.COinS
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