Zhuang, S.; Cao, Y.; Song, W.; Zhang, P.; Choi, S.-B. Effect of Additives on Tribological Performance of Magnetorheological Fluids. Micromachines2024, 15, 270.
Zhuang, S.; Cao, Y.; Song, W.; Zhang, P.; Choi, S.-B. Effect of Additives on Tribological Performance of Magnetorheological Fluids. Micromachines 2024, 15, 270.
Zhuang, S.; Cao, Y.; Song, W.; Zhang, P.; Choi, S.-B. Effect of Additives on Tribological Performance of Magnetorheological Fluids. Micromachines2024, 15, 270.
Zhuang, S.; Cao, Y.; Song, W.; Zhang, P.; Choi, S.-B. Effect of Additives on Tribological Performance of Magnetorheological Fluids. Micromachines 2024, 15, 270.
Abstract
In this study, nano-diamond (ND) and MoS2 powder are used as additives in a carbonyl iron based magnetorheological fluid (MRF) to improve its tribological performance. MRFs are prepared by dispersing 35 wt.% of CI particles in silicone oil, and adding different proportions (0, 1, 3 or 5 wt.%) of ND and MoS2 additives. Seven kinds of MRFs are made and tested using reciprocating friction and wear tester under different normal loads, and then the friction characteristics are evaluated through analyzing experiment results. The morphology properties of MRFs and contacting surfaces before and after tests are also observed using a scanning electron microscope and analyzed by energy-dispersive X-ray spectroscopy. The results show that the appropriate weight percentage of MoS2 additives may decrease friction coefficient and wear zone. It is also demonstrated from the detailed analyses of worn surfaces that the wear mechanism is influenced not only by additives but also by applied normal load and magnetic field strength.
Copyright:
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