"Friction behavior and wear protection ability of selected base lubrica" by Xin Ai ZHANG, Yuzhen ZHAO et al.

Home > FRICTION > Vol. 4 (2016) > Iss. 1

Article Title

Friction behavior and wear protection ability of selected base lubricants

Authors

Xin Ai ZHANG, State Key Laboratory of Mechanical Transmission, Chongqing University, Chongqing 400044, China
Yuzhen ZHAO, Chongqing Branch, Lubricant Co. ltd. SINOPEC, Chongqing 400039, China
Kai MA, Chongqing Branch, Lubricant Co. ltd. SINOPEC, Chongqing 400039, China
Qian WANG, State Key Laboratory of Mechanical Transmission, Chongqing University, Chongqing 400044, China Center for Surface Engineering and Tribology, Northwestern University, Evanston, IL 60208, USA

Keywords

friction, lubricants, viscosity, Stribeck curves, wear loss

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.