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    A tribological performance of vegetable-based oil combined with GNPs and hBN nanoparticles on the friction-wear tests of titanium grade 2
    (Elsevier Ltd, 2023) Şirin, Şenol; Akıncıoğlu, Sıtkı; Gupta, M.K.; Kıvak, T.; Khanna, N.
    In this study, friction performance, surface textures, and wear mechanisms of Titanium Grade (Gr) 2 material were investigated with a pin-on-disc tester. The study was carried out under dry, basefluid (vegetable-based oil), graphene nanoplatelets (GNPs), hexagonal boron nitride (hBN) nanofluids, and GNPs+hBN hybrid nanofluid conditions. In addition, the fluid's viscosity and thermal conductivity coefficient measurements were carried out. As the performance criterion of the pin-on-disc test, coefficient of friction (COF), vibration peak values, surface roughness (Ra profile), and topography, wear and wear mechanisms were preferred. With the data obtained after pin-on-disc tests, it can be said that the GNPs+hBN hybrid nanofluid condition shows the best performance compared to other conditions. GNPs+hBN hybrid condition, compared to the dry condition, decreased the COF average, vibration average, and Ra values by 20%, 52%, and 62%, respectively. © 2023 The Authors