Abstract
This paper reports a comparative study on the tribological characteristics of base oils in four groups, synthetic esters, mineral oils, polymerized alpha olefins (PAOs), and poly alkylene glycols (PAGs), by means of viscosity, friction, and wear measurements. Friction coefficients for the lubricants in each group, measured with a pin-on-disk tribometer, are summarized in the form of Stribeck curves. Wear of the disk specimens due to rubbing in the interfaces lubricated with the tested oils is evaluated by surface topographic changes. The results indicate that for surfaces of similar roughness, viscosity has the predominant influences on the friction and wear-protection properties of these lubricants.
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Xin-Ai ZHANG. She received her bachelor degree in agricultural mechanization and automation from Shandong University of Technology, China, 2013. She is now a graduate student studying for her master’s degree in the State Key Laboratory of Mechanical Transmission at Chongqing University, China. Her research interests include lubricants and lubrication.
Yuzhen ZHAO. He received his master’s degree from Dalian University of Technology, China, 1997. He has been working at the Chongqing Branch, Sinopec lubricant company LTD, China since then. Currently he is the vice president responsible for R&D and quality management of the company. His research area includes development and application of synthetic lubricants, and relationship between lubricant’s chemical structure and tribological behaviour. He is a committee member of the Lubricating Grease Institute of Chinese Petroleum Society.
Kai MA. He received his Ph.D degree from Graduate School of Chinese Academy of Sciences, Beijing, 2012. After then, he joined the Chongqing Branch, Sinopec lubricant company LTD, China. He is currently an associate professor and the director of the Process Research Laboratory.
Qian WANG. She received her Ph.D degree from Northwestern University, USA, 1993. She taught for five years at Florida International University, Miami, FL, USA, and is now a professor in the Mechanical Engineering Department at Northwestern University, USA. Her research interests are at theories and modelling of tribological interfaces and developments of robust and energy effective tribological systems. She received the International Award from Society of Tribologists and Lubrication Engineers (STLE), 2015. She is a fellow of the American Society of Mechanical Engineers (ASME) and STLE.
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Zhang, X.A., Zhao, Y., Ma, K. et al. Friction behavior and wear protection ability of selected base lubricants. Friction 4, 72–83 (2016). https://doi.org/10.1007/s40544-016-0106-x
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DOI: https://doi.org/10.1007/s40544-016-0106-x