From Experimentation to Optimization: Surface Micro-Texturing for Low-Friction and Durable PTFE–Steel Interfaces Under Full Film Lubrication

被引：2
|
作者：
Long, Risheng [1 ,2 ]
Hou, Jincheng [1 ]
Zhang, Yimin [1 ]
Shang, Qingyu [1 ]
Ma, Chi [3 ]
Pape, Florian [4 ]
Marian, Max [4 ,5 ]
机构：
[1] Equipment Reliability Institute, Shenyang University of Chemical Technology, Shenyang,110142, China
[2] Liaoning Provincial Key Laboratory of Efficient Chemical Mixing Technology, Shenyang,110142, China
[3] China-Spain Joint Laboratory on Material Science, Shenyang University of Chemical Technology, Shenyang,110142, China
[4] Institute of Machine Design and Tribology (IMKT), Leibniz University Hannover, An der Universität 1, Garbsen,30823, Germany
[5] Department of Mechanical and Metallurgical Engineering, Pontificia Universidad Católica de Chile, Macul,690411, Chile
来源：
Polymers | 2024年 / 16卷 / 24期
基金：
中国国家自然科学基金;
关键词：
Interpolation - Surface analysis - Wear of materials;
D O I：
10.3390/polym16243505
中图分类号：
学科分类号：
摘要：
To enhance the sliding tribological performance between PTFE and 40#steel (AISI 1040) under full film lubrication conditions, laser surface texturing (LST) technology was employed to prepare micro-dimples on the contact surfaces of 40# steel discs. The Box–Behnken design response surface methodology (BBD-RSM) was applied to optimize the micro-dimple parameters. Coefficients of friction (COFs), wear losses and worn contact surfaces of the PTFE–40# steel tribo-pairs were researched through repeated wear tests, as lubricated with sufficient anti-wear hydraulic oil. The influencing mechanism of micro-dimples on the tribological behavior of tribo-pairs was also discussed. The results proved that micro-dimples can significantly improve the tribological properties of PTFE–40#steel tribo-pairs. The deviation between the final obtained average COF and the prediction by the BBD-RSM regression model was only 0.0023. Following optimization, the average COF of the PTFE–40# steel tribo-pair was reduced by 39.34% compared to the smooth reference. The wear losses of the PTFE ring and 40# steel disc decreased by 91.8% and 30.3%, respectively. This study would offer a valuable reference for the optimal design of key seals used in hydraulic cylinders. © 2024 by the authors.
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