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Rare Metals

Erschienen in:

10.11.2018

Hydrophobicity and tribological properties of Al₂O₃/PTFE composite coating

verfasst von: Ruo-Nan Ji, Chen-Xu Liu, Jin Zhang, Shu-Guang Zhang, Le Zhang, Yong Lian

Erschienen in: Rare Metals | Ausgabe 11/2023

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Abstract

Al₂O₃/polytetrafluoroethylene (PTFE) composite coating was prepared on titanium alloy by cathode plasma electrolytic deposition (CPED) and impregnation method, to improve the hydrophobicity and tribological properties. Scanning electron microscopy (SEM) and energy-dispersive spectroscopy (EDS) analysis of the coating indicate that PTFE penetrates into the interior of the coating and is well bonded to titanium alloy substrate by cross-linking with Al₂O₃ ceramic coating. The contact angles were measured by contact angle measurement, and the tribological properties of the composite coating were evaluated by sliding wear test. The surface of the composite coating is found to possess good hydrophobicity with a water contact angle of 140°. The results also indicate an improved tribological properties of Al₂O₃/PTFE composite coating at room temperature with a steady friction coefficient as low as 0.05. The self-lubricating anti-wear composite coating is expected to solve fouling problems and poor wear resistance of titanium alloys.

Vorheriger Artikel Thermal cycling behavior of nanostructured and conventional yttria-stabilized zirconia thermal barrier coatings via air plasma spray

Nächster Artikel Electrochemical properties of high-loading sulfur–carbon materials prepared by in situ generation method

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Titel: Hydrophobicity and tribological properties of Al2O3/PTFE composite coating
verfasst von: Ruo-Nan Ji
Chen-Xu Liu
Jin Zhang
Shu-Guang Zhang
Le Zhang
Yong Lian
Publikationsdatum: 10.11.2018
Verlag: Nonferrous Metals Society of China
Erschienen in: Rare Metals / Ausgabe 11/2023
Print ISSN: 1001-0521
Elektronische ISSN: 1867-7185
DOI: https://doi.org/10.1007/s12598-018-1149-0

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