Laser surface texturing of both thin polytetrafluoroethylene coatings and stainless steel substrates for improving tribological properties

Autor: Firuze Soltani-Kordshuli, Charles Miller, Nathaniel Harris, Min Zou
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: Polymer Testing, Vol 117, Iss , Pp 107852- (2023)
Druh dokumentu: article
ISSN: 0142-9418
DOI: 10.1016/j.polymertesting.2022.107852
Popis: Hilbert curve patterns were laser-textured on both stainless steel substrates and polytetrafluoroethylene (PTFE) thin coatings by applying 15% and 5% of the 2.3-W full laser power, respectively. The nanomechanical and tribological behavior of both smooth and laser-textured PTFE coatings on both smooth and laser-textured stainless steel substrates were studied. It was found that laser-texturing thin PTFE coatings reduced the hardness of PTFE coatings and prevented the coating from tearing under nanoindenter scratches. Furthermore, laser-texturing on both PTFE coatings and the stainless steel substrate improved the coating wear life 29 times compared to the wear life of the control sample without any laser textures.
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