Abstract
We examine the role of important alloying elements (Al, Y), on friction and wear mechanisms of Mg as a function of temperature. Friction and wear tests of Mg–5%Al and Mg–5%Y alloys performed at room temperature, 100 °C and 150 °C reveal that addition of Al and Y significantly reduces the coefficient of friction. However, despite higher hardness of Mg–5%Y alloy, its wear rate was found to be higher than Mg–5%Al alloy at elevated temperatures. We show that this behaviour, observed for Mg–5%Y alloy at elevated temperature, can be attributed to its higher surface energy than Mg–5%Al and pure Mg, leading to enhanced adhesive wear, which is detrimental to tribological applications.
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Acknowledgements
J.J. acknowledges the financial support received from the Council of Scientific and Industrial Research (CSIR) Project No 22/0686/15/EMR-II. Overall infrastructure support at the Department of Material Science and Engineering is acknowledged. Authors also acknowledge the support of Nanoscale Research Facility at IIT-Delhi. SYL was supported by a National Research Foundation (NRF) grant funded by the Korean government (No. 2019R1H1A2080092, No. 2020M2A2A6A05026873). EWH is grateful to the financial support of Ministry of Science and Technology (MOST) Program 108-2221-E-009-131-MY4. This work was financially supported by the “Center for the Semiconductor Technology Research” from The Featured Areas Research Center Program within the framework of the Higher Education Sprout Project by the Ministry of Education (MOE) in Taiwan. Also supported in part by the Ministry of Science and Technology, Taiwan, under Grant MOST-108-3017-F-009-003, 2019.
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Gokhale, A., Meena, T., Lee, S.Y. et al. Nanowear Mechanisms of Mg Alloyed with Al and Y at Elevated Temperatures. Tribol Lett 68, 46 (2020). https://doi.org/10.1007/s11249-020-01288-8
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DOI: https://doi.org/10.1007/s11249-020-01288-8