Friction and wear are ubiquitous, from nano-electro-mechanical systems in biomedicine to large-scale integrated electric propulsion in aircraft carriers. Applications of nanomaterials as lubricating oil additives have achieved great advances, which are of great significance to control friction and wear. This review focuses on the applications of nanomaterials in lubricating oil and comprehensively compares their tribological characteristics as lubricating oil additives. Statistical analysis of tribology data is provided and discussed accordingly; moreover, the interaction between nanomaterials and sliding surface, lubricating oil, other additives, and synergistic lubrication in nanocomposites are systematically elaborated. Finally, suggestions for future research on nanomaterials as lubricating oil additives are proposed. Hence, this review will promote a better fundamental understanding of nanomaterials for lubricating oil application and help to achieve the superior design of nanoadditives with outstanding tribological performances.

摩擦和磨损无处不在，从生物医学中的纳米机电系统到航空母舰中的大规模集成电力推进系统。纳米材料作为润滑油添加剂的应用取得了长足的进步，对控制摩擦磨损具有重要意义。本综述重点介绍了纳米材料在润滑油中的应用，并综合比较了它们作为润滑油添加剂的摩擦学特性。提供摩擦学数据的统计分析并相应地进行讨论；此外，系统地阐述了纳米材料与滑动表面、润滑油、其他添加剂以及纳米复合材料中的协同润滑之间的相互作用。最后对纳米材料作为润滑油添加剂的未来研究提出了建议。因此，