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Coatings 2018, 8(8), 267; https://doi.org/10.3390/coatings8080267

The Potential of Tribological Application of DLC/MoS2 Coated Sealing Materials

1
Polymer Competence Center Leoben GmbH, Roseggerstraße 12, 8700 Leoben, Austria
2
Chair of Chemistry of Polymeric Materials, Montanuniversität Leoben, 8700 Leoben, Austria
3
Institute of Surface Technologies and Photonics, Joanneum Research Forschungsgesellschaft mbH, 8712 Niklasdorf, Austria
4
SKF Sealing Solutions Austria GmbH, 8750 Judenburg, Austria
*
Author to whom correspondence should be addressed.
Received: 13 June 2018 / Revised: 19 July 2018 / Accepted: 29 July 2018 / Published: 31 July 2018
(This article belongs to the Special Issue Coatings Tribology)
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Abstract

The potential of the combination of hard and soft coating on elastomers was investigated. Diamond-like carbon (DLC), molybdenum disulfide (MoS2) and composite coatings of these two materials with various DLC/MoS2 ratios were deposited on four elastomeric substrates by means of the magnetron sputtering method. The microstructures, surface energy of the coatings, and substrates were characterized by scanning electron microscopy (SEM) and contact angle, respectively. The chemical composition was identified by X-ray Photoelectron Spectroscopy (XPS). A ball on disc configuration was used as the model test, which was performed under dry and lubricated conditions. Based on the results from the model tests, the best coating was selected for each substrate and subsequently verified in component-like test. There is not one coating that is optimal for all substrates. Many factors can affect the coatings performance. The topography and the rigidity of the substrates are the key factors. However, the adhesion between coatings and substrates, and also the coating processes, can impact significantly on the coatings performance. View Full-Text
Keywords: DLC; MoS2; coating; elastomer; seals DLC; MoS2; coating; elastomer; seals
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Wang, C.; Hausberger, A.; Nothdurft, P.; Lackner, J.M.; Schwarz, T. The Potential of Tribological Application of DLC/MoS2 Coated Sealing Materials. Coatings 2018, 8, 267.

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