Four novel ionic liquids (ILs) were synthesized and used as pure lubricants for nickel-based metal friction pairs. Compared with the control samples PAO10 and L-P104, the differences in the physical and chemical properties and tribological behavior were explored, and the improvement in lubricating efficiency was obvious. The results reveal that the properties of the synthesized ILs have a molecular structure activity relationship. The rigid structure and active elements N and P in the molecular structure are beneficial for improving the tribological performance of IL lubricants. In contrast to the single adsorption effect on traditional iron-based metals, the nickel-based metal surface forms a thick nickel carbon oxide layer with an IL under the action of friction heat. The tribochemical reaction film formed on the surface synchronously resulted in better antifriction performance and wear- resistance at high temperatures.

合成了四种新型离子液体 (IL)，并将其用作镍基金属摩擦副的纯润滑剂。与对照样品PAO10和L-P104相比，探索了理化性能和摩擦学行为的差异，润滑效率的提高是明显的。结果表明合成的ILs的性质具有分子结构活性关系。分子结构中的刚性结构和活性元素N和P有利于提高IL润滑剂的摩擦学性能。与对传统铁基金属的单一吸附作用不同的是，镍基金属表面在摩擦热的作用下形成一层厚厚的镍碳氧化物层，带有IL。