Ultralow friction PTFE/PEEK heterolayer: A new solid lubrication approach toward simplicity

Friction

Research Article

Jiaxin Ye¹  Qingrui Song¹  Xiaojun Liu¹  Yi Feng²  Wei Sun² 

[1] Institute of Tribology, School of Mechanical Engineering, Hefei University of Technology, 230009, Hefei, China;School of Materials Science and Engineering, Hefei University of Technology, 230009, Hefei, China;

关键词: ultralow friction;    anti-wear;    polytetrafluoroethylene (PTFE);    heterolayer (HL);   

DOI  :  10.1007/s40544-023-0747-9

 received in 2022-11-11, accepted in 2023-02-08,  发布年份 2023

来源: Springer

【 摘 要 】

Tribological applications of polytetrafluoroethylene (PTFE) are often limited by technological complexity to overcome its poor wear resistance. Here, a PTFE/polyetheretherketone (PEEK) heterolayer (HL) was proposed and evaluated as a new solid lubrication solution. Pin-on-disk tribometry found the lowest friction coefficient (μ) of 0.031 and ultralow wear for the PEEK/HL under typical conditions. The friction coefficient of the HL surpasses those of the state-of-the-art polymeric coatings/composites by at least 200%, and approaches that of highly lubricated interfaces. Mechanistic investigations revealed multi-length physical and chemical heterogeneity of the HL that best facilitates a tribofilm with high subsurface stability and surface instability. The technological simplicity and robustness of the HL’s high lubricity make it a promising new type of solid lubrication toward greater reliability and longevity.

【 授权许可】

CC BY   
© The author(s) 2023

【 图 表 】

Fig. 1