Avilés María-Dolores, Pamies Ramón, Sanes José, Bermúdez María-Dolores
Group of Materials Science and Metallurgical Engineering, Technical University of Cartagena, Campus Muralla del Mar, 30202 Cartagena, Spain.
Nanomaterials (Basel). 2020 Mar 17;10(3):535. doi: 10.3390/nano10030535.
Graphene (0.5 wt.%) was dispersed in the hydrophobic room-temperature ionic liquid 1-octyl-3-methylimidazolium bis(trifluoromethanesulfonyl) imide (IL) to obtain a new non-Newtonian (IL + G) nanolubricant. Thin layers of IL and (IL + G) lubricants were deposited on stainless steel disks by spin coating. The tribological performance of the new thin layers was compared with those of full fluid lubricants. Friction coefficients for neat IL were independent of lubricant film thickness. In contrast, for (IL + G) the reduction of film thickness not only afforded 40% reduction of the friction coefficient, but also prevented wear and surface damage. Results of surface profilometry, scanning and transmission electron microscopy (SEM and TEM), energy dispersive analysis (EDX), X-ray photoelectron spectroscopy (XPS) and Raman spectroscopy were discussed.
将石墨烯（0.5重量%）分散于疏水性室温离子液体1-辛基-3-甲基咪唑双（三氟甲磺酰）亚胺（IL）中，以获得一种新型非牛顿（IL + G）纳米润滑剂。通过旋涂将IL和（IL + G）润滑剂的薄层沉积在不锈钢圆盘上。将新型薄层的摩擦学性能与全流体润滑剂的摩擦学性能进行了比较。纯IL的摩擦系数与润滑膜厚度无关。相比之下，对于（IL + G），膜厚度的减小不仅使摩擦系数降低了40%，而且还防止了磨损和表面损伤。讨论了表面轮廓测量、扫描和透射电子显微镜（SEM和TEM）、能量色散分析（EDX）、X射线光电子能谱（XPS）和拉曼光谱的结果。
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