Friction-induced chemical and structural modifications of molybdenum disulphide thin films
Friction-induced chemical and structural modifications of molybdenum disulphide thin films
The present work investigates chemical and structural modifications of molybdenum disulphide thin coatings induced by macroscale friction in both reactive (air) and inert conditions. Chemical and micro-structural modifications were analyzed in detail by Raman spectroscopy. We found no traces of oxide formation even when sliding was performed in the air. However, the formation of a well-adhered tribofilm, related to superior lubricating properties, was detected only in inert conditions. We can conclude that, in ambient condition, it is water physisorption and not oxidation, which impairs good lubrication. At the same time, Raman spectra indicated a re-crystallization effect induced by sliding.
molybdenum disulfide, Raman spectroscopy, sputtering, tribofilm
4117-4125
Serpini, E.
42656309-da09-496d-92fe-d354de90697d
Vitu, T.
49ae56d2-cce3-44eb-95e6-728a76c423d1
Rota, A.
c39dbbf3-bbc0-4d6e-974b-5c74b33aa6ac
Polcar, T.
c669b663-3ba9-4e7b-9f97-8ef5655ac6d2
Valeri, S.
9bd7a5dd-f732-4c18-b4a0-8c81ff04848a
Serpini, E.
42656309-da09-496d-92fe-d354de90697d
Vitu, T.
49ae56d2-cce3-44eb-95e6-728a76c423d1
Rota, A.
c39dbbf3-bbc0-4d6e-974b-5c74b33aa6ac
Polcar, T.
c669b663-3ba9-4e7b-9f97-8ef5655ac6d2
Valeri, S.
9bd7a5dd-f732-4c18-b4a0-8c81ff04848a
Serpini, E., Vitu, T., Rota, A., Polcar, T. and Valeri, S.
(2021)
Friction-induced chemical and structural modifications of molybdenum disulphide thin films.
Journal of Materials Engineering and Performance, 30 (6), .
(doi:10.1007/s11665-021-05928-5).
Abstract
The present work investigates chemical and structural modifications of molybdenum disulphide thin coatings induced by macroscale friction in both reactive (air) and inert conditions. Chemical and micro-structural modifications were analyzed in detail by Raman spectroscopy. We found no traces of oxide formation even when sliding was performed in the air. However, the formation of a well-adhered tribofilm, related to superior lubricating properties, was detected only in inert conditions. We can conclude that, in ambient condition, it is water physisorption and not oxidation, which impairs good lubrication. At the same time, Raman spectra indicated a re-crystallization effect induced by sliding.
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Accepted/In Press date: 18 May 2021
e-pub ahead of print date: 2 June 2021
Additional Information:
Funding Information:
This work was funded by OPVVV grant Novel nanostructures for engineering applications No. CZ.02.1.01/0.0/0.0/16_026/0008396.
Keywords:
molybdenum disulfide, Raman spectroscopy, sputtering, tribofilm
Identifiers
Local EPrints ID: 485396
URI: http://eprints.soton.ac.uk/id/eprint/485396
ISSN: 1059-9495
PURE UUID: ae995510-6f23-4058-89c1-0e046f902c5e
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Date deposited: 05 Dec 2023 17:57
Last modified: 06 Jun 2024 01:49
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Contributors
Author:
E. Serpini
Author:
T. Vitu
Author:
A. Rota
Author:
S. Valeri
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