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  • Sliding evolution of the chemical and mechanical properties of the tribofilms formed from fully formulated oils on steel, H-DLC and si-DLC [Elektronski vir]
    Akbari, Somayeh ; Kalin, Mitjan
    Different studies have been carried out to understand the chemical structure, the mechanisms of formation, the chemical composition, and the mechanical characteristics of the tribofilms on steel and ... coatings surfaces, but the interactions between these properties are still lacked of deep understanding. In this work, the evolution of the chemical structure and mechanical properties of tribofilms formed in the boundary-lubricated steel/steel, steel/Si-DLC and steel/H-DLC contacts at two different sliding times (25 min and 6 hours) were analysed using Attenuated Total Reflection-Fourier Transform Infrared (ATR-FTIR) spectroscopy and Atomic force microscope (AFM). Three oils have been used: two fully formulated oils with various quantities of SAPS additives (E6 and E7 grade) and a mineral base oil with ZDDP additive. The ATR-FTIR spectroscopy has been used for the chemical characterization of these tribofilms. Atomic force microscope (AFM) has been applied in different modes to analyze the thickness, the topography and the stiffness of these films. The results have shown that the chemical structure strongly support understanding of the tribofilm mechanical properties, growth and the tribofilm's evolution, which are clearly very dependent of the surface type and oil additives.
    Vir: ECOTRIB 2017 [Elektronski vir] (PDF datoteka (1 f.))
    Vrsta gradiva - prispevek na konferenci
    Leto - 2017
    Jezik - angleški
    COBISS.SI-ID - 15587867

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