Effect of Counter-Surface Texturing on the Tribological Behavior of Virgin and Glass-Filled Polytetrafluoroethylene During Sliding Against Grey Cast Iron
6 affiliations
- 1Department of Materials and Mechanical Engineering, Tashkent State Transport University, Tashkent Temiryulchilar St., Tashkent 100167, Uzbekistan
- 2Mechanical Engineering Department, Public Works, Roads and Buildings (PWD-R&B), Jammu and Kashmir 190006, India
- 3Mechanical Engineering Department, SSM College of Engineering, Parihaspora Pattan, Kashmir 193121, India
- 4Department of Mechanical Engineering, Islamic University of Science and Technology, Awantipra, Kashmir 192122, India
- 5Department of Mechanical Engineering, Andijan State Technical Institute, 56 Baburshokh Street, Andijan 170100, Uzbekistan
- 6Department of Mechanical Engineering, Kimyo International University in Tashkent, 156 Usmon Nosir Street, Tashkent 100121, Uzbekistan
Abstract
In this research study, the effect of laser surface texturing on the tribological performance of a composite of polytetrafluoroethylene with 25 wt.% glass fibre against grey cast iron was studied. Dimples (50 µm diameter) were ablated on grey cast iron with dimple pitches of 100 µm and 150 µm. Friction and wear tests were conducted on a pin-on-disc tribometer under ambient conditions. The specific wear rate of both polytetrafluoroethylene and its composite generally decreased with increasing sliding distance for all grey cast iron surfaces, whether textured or un-textured. The coefficient of friction followed a similar trend for polytetrafluoroethylene but increased for 25 wt.% glass fibre/polytetrafluoroethylene on textured grey cast iron surfaces. Compared to un-textured grey cast iron, polytetrafluoroethylene exhibited a 14.2–16.7% reduction in coefficient of friction and specific wear rate when sliding against grey cast iron with a 150 µm dimple pitch. For 25 wt.% glass fibre/polytetrafluoroethylene, laser surface texturing increased friction but significantly reduced the specific wear rate by 66.6–73.2%. Increasing the dimple pitch from 100 µm to 150 µm further decreased the coefficient of friction and wear. Field Emission Scanning Electron Microscopy micrographs of textured grey cast iron surfaces post sliding against polytetrafluoroethylene revealed polymer debris deposition, which led to the formation of transfer films that contributed to friction and wear reduction. These findings highlight the potential of laser surface texturing in enhancing the tribological performance of polytetrafluoroethylene-based materials, particularly in optimizing wear resistance and friction control through surface texturing.
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BibTeX
@article{wani2026effect,
title = {{Effect of Counter-Surface Texturing on the Tribological Behavior of Virgin and Glass-Filled Polytetrafluoroethylene During Sliding Against Grey Cast Iron}},
author = {Mohammad F. Wani and Ferdous Ahad Bhat and Umida Ziyamukhamedova and Mohammad Jebran Khan and Lutfillo Bakirov and Jasurbek Nafasov and Elbek Turgunaliev},
journal = {Polymers},
year = {2026},
month = nov,
doi = {10.3390/polym18212742},
url = {https://www.mdpi.com/2073-4360/18/21/2742},
note = {CC BY 4.0},
}
RIS
TY - JOUR
TI - Effect of Counter-Surface Texturing on the Tribological Behavior of Virgin and Glass-Filled Polytetrafluoroethylene During Sliding Against Grey Cast Iron
AU - Mohammad F. Wani
AU - Ferdous Ahad Bhat
AU - Umida Ziyamukhamedova
AU - Mohammad Jebran Khan
AU - Lutfillo Bakirov
AU - Jasurbek Nafasov
AU - Elbek Turgunaliev
PY - 2026
DA - 2026/11/04
JO - Polymers
DO - 10.3390/polym18212742
UR - https://www.mdpi.com/2073-4360/18/21/2742
AB - In this research study, the effect of laser surface texturing on the tribological performance of a composite of polytetrafluoroethylene with 25 wt.% glass fibre against grey cast iron was studied. Dimples (50 µm diameter) were ablated on grey cast iron with dimple pitches of 100 µm and 150 µm. Friction and wear tests were conducted on a pin-on-disc tribometer under ambient conditions. The specific wear rate of both polytetrafluoroethylene and its composite generally decreased with increasing sliding distance for all grey cast iron surfaces, whether textured or un-textured. The coefficient of friction followed a similar trend for polytetrafluoroethylene but increased for 25 wt.% glass fibre/polytetrafluoroethylene on textured grey cast iron surfaces. Compared to un-textured grey cast iron, polytetrafluoroethylene exhibited a 14.2–16.7% reduction in coefficient of friction and specific wear rate when sliding against grey cast iron with a 150 µm dimple pitch. For 25 wt.% glass fibre/polytetrafluoroethylene, laser surface texturing increased friction but significantly reduced the specific wear rate by 66.6–73.2%. Increasing the dimple pitch from 100 µm to 150 µm further decreased the coefficient of friction and wear. Field Emission Scanning Electron Microscopy micrographs of textured grey cast iron surfaces post sliding against polytetrafluoroethylene revealed polymer debris deposition, which led to the formation of transfer films that contributed to friction and wear reduction. These findings highlight the potential of laser surface texturing in enhancing the tribological performance of polytetrafluoroethylene-based materials, particularly in optimizing wear resistance and friction control through surface texturing.
SN - 2073-4360
ER -