Liu, X., Tao, X., Liu, C. et al. (2 more authors) (2020) Investigation on the nanostructure of as-deposited and post-coat annealed CrCuAgN PVD nanocomposite coatings. Materials Chemistry and Physics, 255. 123499. ISSN 0254-0584
Abstract
CrCuAgN coatings with a wide range of Cu and Ag contents (combined values in the range of <10 at% to >50 at%) were prepared on AISI316L stainless steel coupons by closed-field unbalanced magnetron sputtering(CFUBMS). After the deposition process, the coated coupons were annealed at 300 °C and 500 °C, respectively. The transport behaviour of Cu and Ag in selected CrCuAgN coatings was then investigated by conventional and high-resolution transmission electron microscopy (HR/TEM), energy-filtered (EF)TEM elemental mapping, and scanning (S)TEM with EDX elemental mapping. Results showed that the aggregation of both Cu and Ag are detachment-limited, rather than diffusion-limited. The co-existence of Cu with Ag in a PVD metallic coating was found to be beneficial in promoting Ag transport to the coating surface, resulting not from the anticipated “intergranular network channels” of Cu, but from a much higher detachment rate of Cu than Ag. This study verified that CrCuAgN coatings with desired composition and nanostructure can be obtained via coating/process design, providing controllable precipitation rate of Ag (via adjusting Cu content) for practical applications.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2020 Elsevier. This is an author produced version of a paper subsequently published in Materials Chemistry and Physics. Uploaded in accordance with the publisher's self-archiving policy. Article available under the terms of the CC-BY-NC-ND licence (https://creativecommons.org/licenses/by-nc-nd/4.0/). |
Keywords: | PVD; Nanostructure; Cr-Cu-Ag-N quaternary System; Post-coat annealing; Transport |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Materials Science and Engineering (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 03 Aug 2020 07:49 |
Last Modified: | 21 Jan 2022 10:55 |
Status: | Published |
Publisher: | Elsevier |
Refereed: | Yes |
Identification Number: | 10.1016/j.matchemphys.2020.123499 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:163962 |
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