润滑科技信息平台

Tribological Properties of PTFE and Diamond-Like-Carbon-Coated PTFE in Atmospheric and Vacuum Environments at High Temperatures

出版日期: 2025-07-21

DOI: https://doi.org/10.1016/j.triboint.2025.111011

This study aimed to improve the tribological properties of polytetrafluoroethylene (PTFE) in atmospheric and vacuum environments at high temperatures. A diamond-like carbon (DLC) coating was deposited on the PTFE substrate by sputtering. Tribological tests revealed that DLC-coated PTFE exhibited lower wear rates than uncoated PTFE in all experimental conditions. The dominant factor affecting tribological behavior was the amount and coverage of transfer film formed on the counter surface. DLC-coated PTFE exhibited higher transfer film coverage (~19.5% in atmospheric, ~18% in vacuum) than uncoated PTFE (~12% and ~14%, respectively). This enhancement was due to the high adhesion between the dangling carbon bonds in the transfer film of the DLC coating and the dangling carbon bonds in the PTFE produced by defluorination.

In-situ high-bandwidth microscopy for investigating the roles of adsorbed water and tribofilms on PTFE friction and wear reduction

Pub Date: 2025-07-21 DOI: https://doi.org/10.1016/j.triboint.2025.111011

Synergetic effect of MoS2@basalt fiber on enhancing the anti-wear performance of polyphenylene oxide composite

Pub Date: 2025-07-21 DOI: https://doi.org/10.1016/j.triboint.2025.111011

[Yizheng Wang, Tianlong Wang, Mai Zhang, Xiaohong Gao, Yanming Wang, Xiaoliang Zhang, Jiakun Yu, Baokai Zhang, Yongxing Liu, Ping Li, Zhixiao Zhang]

Tribological Characteristics of Biolubricant Obtained by Transesterification of Grape Seed Oil

Pub Date: 2025-07-21 DOI: https://doi.org/10.1016/j.triboint.2025.111011

[Paulo Roberto Campos Flexa Ribeiro Filho, Francisco Murilo Tavares de Luna, Célio Loureiro Cavalcante, Jr., Thawan Fonseca Silva, Maria Marliete Fernandes de Melo Neta]