期刊
TRIBOLOGY INTERNATIONAL
卷 161, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.triboint.2021.107073
关键词
Hybrid nanosuspension; Water-based lubrication; Roughness dependence; Lubrication mechanism
资金
- Baosteel [BA17004]
- Australia Research Council (ARC) Industrial Transformation Research Hub for Computational Particle Technology [IH140100035]
The study found that the use of hybrid nanosuspensions can reduce wear, improve worn surface quality, suppress adhesive wear, and prevent direct contact-induced friction for contact pairs with different roughness levels.
Hybrid nanosuspensions were synthesised through ultrasonically dispersing ZrO2 or TiO2 nanoparticles into graphene oxide (GO) nanosheet solutions for water-based lubrication. The effect of contact pair roughness on the tribological behaviours of the ZrO2/GO and TiO2/GO hybrid nanosuspensions were investigated using a blockon-ring testing approach. With a relatively smooth ring, the use of the nanosuspensions could reduce abrasive wear, and hence improve worn surface quality, owing to the relieved asperity ploughing. With a ring of moderate roughness, the use of the nanosuspensions suppressed the occurrence of adhesive wear through relieving the effect of asperity contact. With a relatively rough ring, the nanosuspensions generated a deposited layer of hybrid nanoparticles at the contact area that can prevent surface asperities from direct contact, thus leading to lower adhesive wear and friction.
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