高速干切削技术的快速发展对刀具镀层的润滑性能提出了新的要求，而降低具有高硬度的氮化物镀层的摩擦系数无疑可以满足这一要求。本申请拟采用四靶磁控溅射技术，将具有高硬度和良好热性能的TiAlN镀层与工作过程中具有良好高温自润滑性并可显著降低镀层摩擦系数的MoN镀层复合，制备具有不同调制周期和调制比的TiAlN/MoN纳米多层自润滑镀层，系统研究所制备镀层调制周期和调制比对其高温力学性能与摩擦磨损行为的影响规律，分析镀层中润滑相氧化物的形成过程和存在状态及其对摩擦学行为影响的微观机理，澄清摩擦磨损过程中润滑相氧化物所构成的磨粒或润滑膜的形成机制，建立润滑相氧化物的形态特征与镀层自润滑性的联系，揭示TiAlN/MoN纳米多层镀层的周期结构同镀层自润滑性的关系，阐明镀层的自润滑机理和磨损机制，为高性能高温自润滑刀具镀层的研发和性能的改善提供实验支撑和理论依据。

The fast development of high speed and dry cutting makes a new request on self-lubricating properties of coatings applied for cutting tools. Moreover, this request could be fulfilled by reducing the friction coefficient of hard nitride coatings. In this project, serious self-lubricating TiAlN/MoN nano-multilayer coatings will be deposited by four-target magnetron sputtering, which would combine the high hardness, excellent thermal properties of TiAlN coatings with the excellent self-lubricating properties of MoN coatings. The influence of modulation period and modulation ratio on the high temperature mechanical properties and high temperature tribological properties will be investigated. The mechanism that how the formation and morphological character of self-lubricating oxide influence the tribological behavior will and the formation mechanism of wear debris or tribo film composed by these self-lubricating oxides will be clarified. The relationship between modulation structure and self-lubricating properties will be revealed by correlating the morphological character of self-lubricating oxides with the self-lubricating properties. Finally, the self-lubricating mechanism of multilayer coatings and wear mechanism will also be clarified. The results of this project would be helpful on the fabrication of high temperature self-lubricating coatings for cutting tools, and it would also provide theoretical and experimental data for the improvement of coating properties.