High temperature tribological behavior of tetrahedral amorphous carbon (ta-C) and fluorinated ta-C coatings against aluminum alloys
作者： S Bhowmick , A Banerji , MZU Khan , MJ Lukitsch , AT Alpas
DOI: 10.1016/J.SURFCOAT.2015.08.071
关键词: Materials science 、 Analytical chemistry 、 Diamond-like carbon 、 Amorphous carbon 、 Metallurgy 、 Fluorine 、 Spectroscopy 、 Tribology 、 Aluminium 、 Coating 、 Atmospheric temperature range
摘要: Friction and wear behavior of tetrahedral amorphous carbon (ta-C) and fluorinated ta-C (ta-C–F) coatings were studied in the temperature range between 25° C and 500° C. Pin-on-disk type tests conducted on ta-C against Al–6.5% Si (319 Al) showed that the steady-state coefficient of friction (μ s) decreased from 0.36 at 25° C to 0.11 at 400° C. The reduction in friction was attributed to sliding-induced sp 3 to sp 2 transformation (graphitization) of the coating and formation of oxygen rich transfer layer as revealed by X-ray photoelectron and …
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