Hexagonal boron nitride (h‐BN) exhibits great potential for tribological applications due to its attractive 2D layered structure. In this work, functionalised hexagonal boron nitride (f‐BN) was prepared by ultrasonic exfoliation of pristine h‐BN in water and subsequent hydrothermal modification with sodium oleat. Fourier infrared spectra and X‐ray photoelectron spectra analyses showed that long alkyl‐chains were successfully grafted on the surface of f‐BN by modification process. The tribological properties of the as‐prepared f‐BN as lubricant additive in poly‐alpha‐olefin 10 (PAO10) for lubricating MoN coating sliding against Si₃N₄ ball were evaluated by a ball‐on‐disc friction tester. The friction coefficient and wear rate of the oil dispersed with 2 mg/mL f‐BN was respectively reduced by 42% and 29% in comparison with the pure PAO10 oil, suggesting that f‐BN was an effective lubricating additive for reducing friction and wear. Finally, the lubricating mechanism of f‐BN dispersed in PAO10 was discussed and proposed.

中文翻译：

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功能化的h-BN作为PAO油中的有效润滑剂添加剂，用于MoN涂层在Si3N4球上滑动

六方氮化硼（h-BN）由于具有吸引力的2D分层结构，在摩擦学应用中显示出巨大的潜力。在这项工作中，功能性六方氮化硼（f-BN）的制备是通过将原始h-BN在水中超声剥落并随后用油酸钠进行水热改性来制备的。傅立叶红外光谱和X射线光电子能谱分析表明，长烷基链通过修饰过程成功地嫁接到了f-BN表面。制备的f-BN作为聚α-烯烃10（PAO10）中的润滑剂添加剂的摩擦学特性，用于润滑在Si ₃ N _4上滑动的MoN涂层球由圆盘摩擦测试仪评估。与纯PAO10油相比，分散在2 mg / mL f-BN中的油的摩擦系数和磨损率分别降低了42％和29％，这表明f-BN是降低摩擦和磨损的有效润滑添加剂。 。最后，讨论并提出了分散在PAO10中的f-BN的润滑机理。