Atomically thin hydroxylation boron nitride nanosheets for excellent water-based lubricant additives |
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| Authors: | Yufeng Bai Lixia Wang Chunhua Ge Rui Liu Hongyu Guan Xiangdong Zhang |
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| Affiliation: | 1. College of Chemistry, Liaoning University, Shenyang, Liaoning Province, P. R. China;2. Wulanchabu Municipal Bureau of Ecology and Environment, Siziwang Banner Branch, Wulanchau, Inner Mongolia Autonomous Region, P.R. China |
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| Abstract: | Hexagonal Boron nitride (BN) can be used as a lubricant additive, which can dramatically reduce friction energy. However, due to the accumulation of BN in the water-based lubricants and the difficulty of entering the friction contact area, the tribological performance of BN becomes worse. To address this issue, the atomically thin hydroxylated boron nitride nanosheets (HO-BNNS) were successfully prepared. The thickness of HO-BNNS is only 0.6-0.8 nm. Meanwhile, the HO-BNNS has excellent dispersion stability in water-based lubricants because of the hydroxyl group on the surface of HO-BNNS. The as-prepared HO-BNNS exhibits unique friction properties as a water-based dispersible lubricant additive. Additionally, the average wear scar diameter, average friction coefficient, and mean wear volume of HO-BNNS/water-based (0.05 wt%) drop by about 64.7%, 60%, and 95.73%. Finally, the introduction of HO-BNNS can well control the temperature of water-based lubricant. |
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| Keywords: | exfoliation exfoliation stability HO-BNNS lubricant additives thermal conductivity |
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