Zhong Wen, Dong Jiazhi, Chen Siqiang, Tong Zhe
The Key Laboratory of Fluid and Power Machinery, Ministry of Education, Xihua University, Chengdu 610039, China.
Luzhou Laojiao Group Co., Ltd., Luzhou 646000, China.
Materials (Basel). 2023 Jul 13;16(14):4979. doi: 10.3390/ma16144979.
The synergistic effect of different types of solid particles in liquid lubricants is of great interest. In this work, g-CN nanosheets were initially prepared using a calcination method and then as-prepared, and h-BN were used as lubricating additives to the white oil. A comparison between the mixed additives and the single g-CN or h-BN additives revealed that the base oil with the addition of g-CN and h-BN showed the best lubricating properties. The results show a 12.3% reduction in friction coefficient, resulting in a 68.6% reduction in wear rate compared to the white oil when filled with 0.5 wt% g-CN and h-BN (1:1 by weight). Moreover, the addition of g-CN and h-BN improves the high-temperature lubrication properties of the white oil. However, the friction coefficient and wear rate increase with increasing oil temperature. The large contact area between g-CN and its sliding counterpart and the strong adhesive force between h-BN and its sliding counterpart improve the film formation efficiency, leading to enhanced tribological properties under oil lubrication conditions.
液体润滑剂中不同类型固体颗粒的协同效应备受关注。在这项工作中，首先采用煅烧法制备了g-CN纳米片，然后将其与h-BN作为白油的润滑添加剂。混合添加剂与单一g-CN或h-BN添加剂的比较表明，添加g-CN和h-BN的基础油表现出最佳的润滑性能。结果显示，当填充0.5 wt%的g-CN和h-BN（重量比为1:1）时，摩擦系数降低了12.3%，磨损率相比白油降低了68.6%。此外，g-CN和h-BN的添加改善了白油的高温润滑性能。然而，摩擦系数和磨损率随油温升高而增加。g-CN与其滑动副之间的大接触面积以及h-BN与其滑动副之间的强粘附力提高了成膜效率，从而在油润滑条件下增强了摩擦学性能。
