Brittain, K, Morina, A, Yang, L et al. (1 more author) (2022) Impact of thermal cycles on tribological properties and oxidation of MoS2 coatings. Tribologie und Schmierungstechnik, 69 (1). pp. 50-59. ISSN 0724-3472
Abstract
MoS2 based solid lubricants are extensively used in space applications, where the materials are exposed to large fluctuations of temperatures. Storage takes place in ambient conditions and so does testing, to test the mechanical systems in the harshest environments. In this work, the coatings were exposed to 40 °C, 75 °C and 250 °C for 1 hour and cooled in air to determine the effect of exposure to increased temperature. It was confirmed that MoS2/Ti is thermally stable and not significantly affected by heat treatments. Pure MoS2 observes increased strain in the structure after exposure to 250 °C, which is due to oxygen substitution that takes place in S vacancies, followed by oxide formation. Although coefficient of friction is not affected by heat treatments, wear is reduced due to increase in hardness.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Keywords: | Molybdenum disulfide; solid lubricantion; surface analysis; wear mechanisms; oxidation friction |
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) |
Depositing User: | Symplectic Publications |
Date Deposited: | 17 Mar 2022 16:28 |
Last Modified: | 14 Dec 2022 10:20 |
Status: | Published |
Publisher: | Narr Francke Attempto Verlag GmbH + Co. KG |
Identification Number: | 10.24053/tus-2022-0006 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:184769 |