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Tribological behaviour of SnO 2 nanoparticles as an oil additive on brass
Author(s) -
Tao Chuanlin,
Wang Bingxu,
Barber Gary C.,
Schall J. David,
Lan Huiqing
Publication year - 2018
Publication title -
lubrication science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.632
H-Index - 36
eISSN - 1557-6833
pISSN - 0954-0075
DOI - 10.1002/ls.1416
Subject(s) - nanofluid , materials science , tribology , scanning electron microscope , nanoparticle , brass , oleic acid , pulmonary surfactant , reciprocating motion , tin , composite material , chemical engineering , energy dispersive x ray spectroscopy , metallurgy , nanotechnology , chemistry , copper , mechanical engineering , biochemistry , gas compressor , engineering
Abstract In this research, the tribological behaviour of oil‐based SnO 2 nanofluid was evaluated using flat‐on‐flat reciprocating sliding tests on brass. Oleic acid was used as surfactant to improve the stability of SnO 2 nanofluid. The morphology of the worn surfaces was observed using optical microscopy, scanning electron microscopy, and energy‐dispersive X‐ray spectroscopy. It was found that oil‐based SnO 2 nanofluid reduced the coefficient of friction up to 65.4% and the wear volume loss up to 43.7%. In the analysis of the chemical composition inside the wear track, a tribosintered or embedded patchy film containing tin was observed, which protected the surface against wear and lowered the coefficient of friction. The SnO 2 nanoparticles might also roll or slide between 2 mating surfaces to prevent adhesive wear.