Functionalisedh-BNas an effective lubricant additive inPAOoil forMoNcoating sliding againstSi(3)N(4)ball
Functionalisedh-BNas an effective lubricant additive inPAOoil forMoNcoating sliding againstSi(3)N(4)ball
复制标题
功能化的 h-B 作为 PAO 油中的有效润滑添加剂，用于 MoN 涂层对 Si(3)N(4) 球的滑动
DOI：
10.1002/ls.1524
复制
发表时间：
2021
影响因子：
1.9
通讯作者：
Li Zhujun
中科院分区：
文献类型：
--
作者：
Liu Chaolin;Tang Gongbin;Su Fenghua;Xu Xing;Li Zhujun
六方氮化硼（h-BN）由于其有吸引力的二维层状结构而在摩擦学应用中表现出巨大的潜力。在这项工作中，通过在水中超声剥离原始 h-BN 并随后用油酸钠进行水热改性来制备功能化六方氮化硼 (f-BN)。傅里叶红外光谱和X射线光电子能谱分析表明，通过改性过程，长烷基链成功接枝到f-BN表面。通过球盘摩擦测试仪评估了所制备的 f-BN 作为聚 α-烯烃 10 (PAO10) 中的润滑剂添加剂的摩擦学性能，用于润滑 MoN 涂层在 Si3N4 球上的滑动。与纯PAO10油相比，分散有2 mg/mL f-BN的油的摩擦系数和磨损率分别降低了42%和29%，表明f-BN是一种有效减少摩擦和磨损的润滑添加剂。最后，讨论并提出了f-BN分散在PAO10中的润滑机理。
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 Si3N4ball 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.