De Feo, M, De Barros Bouchet, MI, Minfray, C et al. (7 more authors) (2017) Formation of interfacial molybdenum carbide for DLC lubricated by MoDTC: Origin of wear mechanism. Wear, 370-371. pp. 17-28. ISSN 0043-1648
Abstract
A large amount of research has been devoted to the effect of molybdenum dithiocarbamate (MoDTC) additives on the lubricating performances of carbon-based coatings, showing that a high wear rate is produced when the MoDTC is blended with the base oil. However, the mechanisms leading to the coating removal are not fully understood yet.
In this work, the friction and wear performances of an amorphous hydrogenated DLC coating doped with silicon and oxygen have been analysed when lubricated by MoDTC-containing oils. Tribological experiments have been conducted with DLC/steel and DLC/DLC contacts under boundary lubrication conditions using a ball-on-flat tribometer. To understand the wear mechanism, the chemical composition of the tribofilm formed on the steel ball counterpart was investigated by X-ray Photoelectron Spectroscopy (XPS). Transmission Electron Microscopy (TEM) coupled with Energy Dispersive X-Ray Spectroscopy (EDX). A new DLC wear model has been proposed and validated.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | (c) 2016, Elsevier Ltd. All rights reserved. This is an author produced version of a paper published in Wear. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | MoDTC friction modifier additive; DLC coatings; Wear mechanism |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Mechanical Engineering (Leeds) > Institute of Functional Surfaces (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 02 Mar 2020 12:27 |
Last Modified: | 04 Mar 2020 00:46 |
Status: | Published |
Publisher: | Elsevier BV |
Identification Number: | 10.1016/j.wear.2016.10.002 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:157843 |