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Comparative study of copper oxidation protection with graphene and hexagonal boron nitride

Scardamaglia, Mattia LU ; Boix, Virginia LU ; D'Acunto, Giulio LU ; Struzzi, Claudia LU ; Reckinger, Nicolas ; Chen, Xin ; Shivayogimath, Abhay ; Booth, Tim and Knudsen, Jan LU (2021) In Carbon 171. p.610-617
Abstract

The use of protective barriers to isolate a metal surface from an aggressive environment is a common way to inhibit its degradation. We used ambient pressure x-ray photoelectron spectroscopy to assess in real time the evolution of the copper surface and the contextual protective action of 2D material coatings (graphene and hexagonal boron nitride) towards copper oxidation. In an isobaric experiment with 2 mbar of oxygen, the bare copper oxidizes near room temperature, while both 2D materials can retard the onset temperature for the first oxidation of copper by more than 120 °C. However, their protection mechanism is different: boron nitride behaves more straightforwardly, forming an effective barrier to copper oxidation until it is... (More)

The use of protective barriers to isolate a metal surface from an aggressive environment is a common way to inhibit its degradation. We used ambient pressure x-ray photoelectron spectroscopy to assess in real time the evolution of the copper surface and the contextual protective action of 2D material coatings (graphene and hexagonal boron nitride) towards copper oxidation. In an isobaric experiment with 2 mbar of oxygen, the bare copper oxidizes near room temperature, while both 2D materials can retard the onset temperature for the first oxidation of copper by more than 120 °C. However, their protection mechanism is different: boron nitride behaves more straightforwardly, forming an effective barrier to copper oxidation until it is etched away at high temperatures, leading to a rapid oxidation to cuprous and then cupric oxide. On the other hand, graphene reveals to be a more interesting playground underneath oxygen intercalates and begins a slower undercover oxidation of copper. The coexistence between graphene and cuprous oxide, not observed in boron nitride, protects the copper from further oxidation to cupric oxide.

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author
; ; ; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Ambient pressure XPS, Corrosion, Protective coatings
in
Carbon
volume
171
pages
8 pages
publisher
Elsevier
external identifiers
  • scopus:85091599946
ISSN
0008-6223
DOI
10.1016/j.carbon.2020.09.021
language
English
LU publication?
yes
id
b87d68bc-9794-4fe8-b5c4-3289434d4fe7
date added to LUP
2020-10-21 15:51:27
date last changed
2020-10-22 09:16:25
@article{b87d68bc-9794-4fe8-b5c4-3289434d4fe7,
  abstract     = {<p>The use of protective barriers to isolate a metal surface from an aggressive environment is a common way to inhibit its degradation. We used ambient pressure x-ray photoelectron spectroscopy to assess in real time the evolution of the copper surface and the contextual protective action of 2D material coatings (graphene and hexagonal boron nitride) towards copper oxidation. In an isobaric experiment with 2 mbar of oxygen, the bare copper oxidizes near room temperature, while both 2D materials can retard the onset temperature for the first oxidation of copper by more than 120 °C. However, their protection mechanism is different: boron nitride behaves more straightforwardly, forming an effective barrier to copper oxidation until it is etched away at high temperatures, leading to a rapid oxidation to cuprous and then cupric oxide. On the other hand, graphene reveals to be a more interesting playground underneath oxygen intercalates and begins a slower undercover oxidation of copper. The coexistence between graphene and cuprous oxide, not observed in boron nitride, protects the copper from further oxidation to cupric oxide.</p>},
  author       = {Scardamaglia, Mattia and Boix, Virginia and D'Acunto, Giulio and Struzzi, Claudia and Reckinger, Nicolas and Chen, Xin and Shivayogimath, Abhay and Booth, Tim and Knudsen, Jan},
  issn         = {0008-6223},
  language     = {eng},
  pages        = {610--617},
  publisher    = {Elsevier},
  series       = {Carbon},
  title        = {Comparative study of copper oxidation protection with graphene and hexagonal boron nitride},
  url          = {http://dx.doi.org/10.1016/j.carbon.2020.09.021},
  doi          = {10.1016/j.carbon.2020.09.021},
  volume       = {171},
  year         = {2021},
}