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- W4385702549 abstract "Abstract The present study explores the performance of novel vegetable oil–based greases containing nano-CaCO3 as an additive. A series of greases with varying nanoparticle concentrations (0–4% w/w) are evaluated on a four-ball tester machine under a standard tribological test (ASTM D2266) and simultaneously in a rolling bearing at various speeds and loads against two commercial greases as the benchmark. The vibrations and shock pulse measurements are recorded to assess the bearing performance. The tribo-dynamic investigation suggests that the eco-friendly nano-greases are at par with the commercial ones; performance varies with the nanoparticle concentration. Under the tribological test, the third-body action of nanoparticles seems to increase friction, while the interfacial deposition (physisorption) of nano-CaCO3 and nano-CaO decreases wear. Under the bearing test, the rolling effect of nanoparticles seems to influence vibrations, while their entrainment in the contact zone governs the carpet values. The nano-grease containing 4% nano-CaCO3 performs best under both assessments, displaying great prospects of a sustainable and potential alternative to existing environmentally unfriendly greases." @default.
- W4385702549 created "2023-08-10" @default.
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- W4385702549 date "2023-09-14" @default.
- W4385702549 modified "2023-09-26" @default.
- W4385702549 title "Tribo-Dynamic Performance of Newly Developed Environmentally Friendly Lubricating Greases Containing Nano-CaCO3" @default.
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- W4385702549 doi "https://doi.org/10.1115/1.4063138" @default.
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