A review of studies related to the interaction between nanomaterials, sliding surfaces, lubricants and additives used in nano-lubricant mixtures.

Due to the a lot of articles and the complexity of retrieval, it is impossible to cover all published articles in this review, but most of the research results and statistics can be considered as a reference for nanomaterials. According to many experimental results, the tribological characteristics of the influencing factors of most nanomaterials are summarized below. Due to the complexity of the friction process and various influencing factors, the conclusions are not absolute and can be different with the change of working conditions and nanomaterials. In this study, an overview of the researches carried out on the relationship between morphology and tribological performance, the analysis of various lubrication regimes, the interaction between nanomaterials and the sliding surface, the interaction between nanomaterials and lubricating oil, nanomaterials and other additives and the interaction between materials in nanocomposites. Finally, important suggestions for future research in the field of developing nanomaterials as lubricant oil additives have been stated.