Effect of change in temperature on the tribological performance of micro surface textured DLC coating

Arslan, A. and Masjuki, Haji Hassan and Varman, M. and Kalam, M.A. and Quazi, M.M. and Mosarof, M.H. (2016) Effect of change in temperature on the tribological performance of micro surface textured DLC coating. Journal of Materials Research, 31 (13). pp. 1837-1847. ISSN 0884-2914, DOI https://doi.org/10.1557/jmr.2016.12.

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Official URL: https://doi.org/10.1557/jmr.2016.12


In this study, surface texturing and hydrogenated amorphous carbon (a-C:H) diamond-like carbon (DLC) coating was combined to evaluate the coating performance at various temperatures in oil lubricated reciprocating sliding tests. Micro dimples were created by laser surface texturing on M2 steel using a Pico second laser. DLC coating was deposited by hybrid magnetron sputtering on textured substrates. Textured a-C:H showed stable coefficient of friction at 30, 80, and 125 °C compared to un-textured a-C:H. At 30 °C, graphitization was not observed for both textured and un-textured DLC coating. Graphitization was more pronounced in the case of un-textured a-C:H at 80 and 125 °C. Results show that, at all temperatures tested (30-125 °C), DLC textured samples showed higher wear resistance compared to un-textured DLC coating. The improvement in wear resistance can be explained by the lower graphitization of textured DLC coating. Lower graphitization in the case of textured DLC might be due to the wear particle capturing and lubricant retention ability of textures.

Item Type: Article
Funders: Ministry of Higher Education (MOHE) of Malaysia: HIR-MOHE Project (UM.C/HIR/MOHE/ENG/07), University of Malaya Research Grant (UMRG), Project Nos. RP016-2012B and RP016-2012A
Uncontrolled Keywords: a-C:H DLC coating; Friction; Graphitization; Surface texture; Wear resistance
Subjects: T Technology > TJ Mechanical engineering and machinery
Divisions: Faculty of Engineering
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 21 Nov 2017 04:03
Last Modified: 16 Oct 2018 05:21
URI: http://eprints.um.edu.my/id/eprint/18336

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