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  4. From pulsed-DCMS and HiPIMS to microwave plasma-assisted sputtering: Their influence on the properties of diamond-like carbon films
 
research article

From pulsed-DCMS and HiPIMS to microwave plasma-assisted sputtering: Their influence on the properties of diamond-like carbon films

Hain, Caroline
•
Brown, David
•
Welsh, Alexander
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February 25, 2022
Surface & Coatings Technology

The fabrication of high-hardness non-hydrogenated diamond-like carbon (DLC) via standard magnetron sputtering (MS) is often hindered by the low sputtering yields and ionisation rates of carbon, therefore investigations into pulsed alternatives of MS, else sputtered species post-ionisation methods, are of particular interest. This work focuses on investigating the influence of pulsed-direct current MS (pDCMS), high power impulse magnetron sputtering (HiPIMS) and their microwave plasma-assisted (MA-pDCMS, MA-HiPIMS) variants on the properties of the fabricated DLC films. Two setups were used for the pDCMS-and HiPIMS-based methods, respectively. The films were characterised using Raman spectroscopy, nanoindentation, X-ray reflectometry and scanning electron microscopy, where the pDCMS-produced films were additionally characterised by film-stress measurements. Moreover, in situ time-resolved Langmuir probe plasma analysis was performed under HiPIMS and MA-HiPIMS conditions to analyse the influence of the magnetron and microwave plasmas on one another. For both DCMSand HiPIMS-based procedures, it was found that the addition of microwave plasma did not facilitate attaining hardnesses beyond 30 GPa, however, it did enable modifying the morphology of the films. Furthermore, this study shows the potential of synchronised sputtering with substrate biasing, as well as the importance of microwave plasma source positioning in relation to the substrate.

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Type
research article
DOI
10.1016/j.surfcoat.2021.127928
Web of Science ID

WOS:000779414900002

Author(s)
Hain, Caroline
Brown, David
Welsh, Alexander
Wieczerzak, Krzysztof
Weiss, Robert
Michler, Johann
Hessler-Wyser, Aicha  
Nelis, Thomas
Date Issued

2022-02-25

Publisher

ELSEVIER SCIENCE SA

Published in
Surface & Coatings Technology
Volume

432

Article Number

127928

Subjects

Materials Science, Coatings & Films

•

Physics, Applied

•

Materials Science

•

Physics

•

diamond-like carbon

•

magnetron sputtering

•

microwave plasma

•

raman spectroscopy

•

nanoindentation

•

langmuir probe

•

langmuir probe measurements

•

thermal-stability

•

elastic-modulus

•

poissons ratio

•

deposition

•

growth

•

wear

Editorial or Peer reviewed

REVIEWED

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April 25, 2022
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/187321
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