Abstract

This paper considers the mechanism of formation and structure of boundary lubricating films on the metal surface in the presence of different types of additives, namely fatty acids and cholesteric-type mesogens, whose molecules have a phenanthrene skeleton. The results of laboratory studies of the tribological properties of industrial oil I-30A supplemented with the indicated types of additives in various concentrations are presented. The studies were carried out on a four-ball friction machine according to the standard method, and the main indicators of the lubricating ability of oil samples with additives, such as the diameter of the wear spot, critical load, scoring index, and welding load, were determined. According to the obtained results, it was found that the greatest positive effect on the lubricating ability of industrial oils is exerted by a liquid crystal additive, when compared to fatty acid, and the maximum anti-wear effect is observed at concentrations lying within the studied range. These data indicate the presence of a region of rational concentration of the liquid crystal additive in industrial oil.

中文翻译：

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液晶添加剂的浓度和类型对工业油摩擦学特性的影响

摘要

本文考虑了存在不同类型的添加剂（即分子具有菲骨架的脂肪酸和胆甾型介晶）存在下在金属表面形成边界润滑膜的机理。给出了对工业油I-30A的摩擦学性能进行实验室研究的结果，该工业油中还添加了各种浓度的所示类型的添加剂。研究是在四球摩擦机上按照标准方法进行的，并且对含添加剂的油样的润滑能力的主要指标进行了研究，例如磨损点的直径，临界载荷，刻痕指数和焊接载荷。 ，已确定。根据获得的结果，已经发现，与脂肪酸相比，液晶添加剂对工业油的润滑能力具有最大的积极作用，并且在研究范围内的浓度下观察到最大的抗磨作用。这些数据表明在工业油中存在合理浓度的液晶添加剂区域。