MoDTC和ZDTP对纳米摩擦膜摩擦磨损行为的协同效应
Synergistic Effects of MoDTC and ZDTP on Frictional Behaviour of Tribofilms at the Nanometer Scale
摘要：
通过动态纳米压痕实验研究了含二烷基二硫代磷酸锌（ZDTP）和/或二烷基二硫代氨基甲酸钼（MoDTC）添加剂的润滑油在滚动/滑动接触中形成的抗磨膜的层状结构和流变性能，并对膜的刚度测量进行了简单的建模。用相同的装置进行局部纳米摩擦实验，以确定不同润滑剂制剂的摩擦系数随施加压力的变化。对于MoDTC膜，在摩擦测试中施加的压力保持低（<0.5GPa）并且表观摩擦系数高（$μ$ > 0.4）。对于含有MoDTC和ZDTP的摩擦膜，其允许施加的压力通过一些调节过程增加到几GPa，出现非常低的摩擦域（0.01 < $μ$ < 0.05），位于摩擦膜表面以下几纳米处。这种低摩擦系数归因于当压力足够高时以有利的构造在彼此上滑动的MoS 2平面的存在，这通过ZDTP的存在而成为可能。
英文摘要：
The layered structure and the rheological properties of anti-wear films, generated in a rolling/sliding contact from lubricants containing zinc dialkyldithiophosphate (ZDTP) and/or molybdenum dialkyldithiocarbamate (MoDTC) additives, have been studied by dynamic nanoindentation experiments coupled with a simple modelling of the stiffness measurements. Local nano-friction experiments were conducted with the same device in order to determine the evolution of the friction coefficient as a function of the applied pressure for the different lubricant formulations. For the MoDTC film, the applied pressure in the friction test remains low (<0.5 GPa) and the apparent friction coefficient is high ($μ$ > 0.4). For the tribofilms containing MoDTC together with ZDTP, which permits the applied pressure to increase up to a few GPa through some accommodation process, a very low friction domain appears (0.01 < $μ$ < 0.05), located a few nanometers below the surface of the tribofilm. This low friction coefficient is attributed to the presence of MoS2 planes sliding over each other in a favourable configuration obtained when the pressure is sufficiently high, which is made possible by the presence of ZDTP.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
