超低摩擦固-液润滑体系的构建与调控机制研究

固-液润滑是机械装备实现长寿命绿色高效润滑的有效途径之一。本项目在系统研究固体润滑和液相润滑抗磨减摩机理的基础上，立足固-液润滑的绿色和协同润滑思路，从研究固体润滑纳米材料的表面形态、组成、结构-摩擦副摩擦表面效应-抗磨减摩性能关系的角度，来构建固-液两相润滑体系中高效调控的固体纳米表面功能体系，实现在摩擦表面形成超低摩擦反应薄膜和固-液协同润滑的目的。探讨制备富勒烯/石墨烯固体纳米润滑复合材料的优化工艺条件，通过表面改性与修饰技术，研究纳米固体润滑复合材料在液相润滑剂中的分散与运动规律，实现调整或改善固体润滑剂与摩擦表面相互作用的选择性，揭示富勒烯纳米模拟酶的抗氧化功效，以及酶促摩擦化学反应机制。利用现代表面分析技术，深入分析固-液润滑条件下的摩擦状态和磨损机制的变化规律，为宏观尺度固-液润滑条件下超低摩擦理论与技术突破提供必要的理论支撑。

Solid-liquid lubrication is one of the effective ways to realize long life green and efficient lubrication of mechanical equipment. According to the systematic study of the mechanisms of antiwear and friction reduction of solid and liquid lubrication, and based on the idea of green and synergetic lubrication of solid-liquid lubrication, the present project constructs the highly regulated solid nano-surface in the solid-liquid two-phase lubrication system from the perspective of the study of the relationship between the surface morphology, composition, structure, friction surface effect and antiwear and antifriction performance of solid-liquid nano materials. The function system realizes the goal of forming ultra-low friction reaction film and solid-liquid synergistic lubrication on the friction surface. The optimized process conditions of preparing fullerene/graphene solid nano lubricating composite are discussed. The dispersion and movement of nano solid lubricating composite in liquid lubricant are studied by surface modification technology, so as to adjust or improve the selectivity of interaction between solid lubricant and friction surface, reveal the antioxidant effect of fullerene-based nano-enzyme and enzymatic mechanism of tribochemical reaction. By using modern surface analysis technology, the change rule of friction state and wear mechanism under the condition of solid-liquid lubrication is deeply analyzed, which provides necessary theoretical support for the breakthrough of ultra-low friction theory and technology under the condition of macro-scale solid-liquid lubrication.