面向现代高速切削加工的硬质刀具涂层在高温服役环境下应具有高热稳定性、高硬度以及优异耐磨损性能。在高温服役环境下，AlCrN涂层存在高温氧化、硬度下降、摩擦系数大等问题，严重损害了AlCrN涂层的服役性能。对此，本项目拟制备AlCrSiVN纳米复合涂层，通过引入纳米复合结构与掺杂自润滑V组元的协同作用，赋予AlCrSiVN涂层表面兼具致密性、自润性以及高耐磨特性。研究多组元、纳米复合涂层的沉积等离子体性质，建立沉积等离子体性质与AlCrSiVN涂层其结构及性能之间的关联；研究高温下组元V在纳米复合结构中的扩散行为，探明V含量及纳米复合结构对AlCrSiVN涂层高温力学、高温氧化及高温摩擦磨损行为的影响机制；揭示AlCrSiVN涂层的高温抗氧化及耐磨减摩本质，为具有高温自润滑、耐磨减摩特性的高速干式切削刀具涂层的设计制备提供实验和理论指导。

Hard tool coatings using for modern high-speed machining should possess good thermal stability, high hardness and excellent wear resistance under high-temperature service condition. AlCrN based coatings suffer from a fast failure due to their oxidation, hardness degradation and high friction coefficient at high temperatures. Therefore, this project aims to design and fabricate the AlCrSiVN nanocomposite coatings. Both introductions of nanocomposite microstructure and V are used to improve the compactness, self-lubricating ability and wear resistance of the AlCrSiVN nanocomposite coatings. The plasma property during the coating deposition will be measured. The relationship between the plasma property, coating microstructure and performance will be discussed. The diffusion behavior of the V in the nanocomposite microstructure at high temperatures will be investigated. In addition, the influences of the V addition amounts and the nanocomposite structure to the mechanical property, oxidation and tribological performance of the AlCrSiVN coatings will be evaluated. The mechanisms for the self-lubrication of the AlCrSiVN coatings at elevated temperatures will be studied. The project findings will provide guidance on both design and fabrication of hard coatings with the properties of self-lubrication and high wear resistance.