镁基材料表面进行微弧氧化处理(MAO)制备的多孔结构的陶瓷涂层在干摩擦环境下的摩擦系数较高,本文采用微弧氧化结合非平衡磁控溅射技术在纯镁基体表面制备出了MAO/CrN复合涂层。通过扫描电镜、显微硬度测试、X射线衍射仪能谱、摩擦磨损实验等手段研究了复合涂层的形貌、成分及摩擦磨损性能。结果表明:MAO/CrN复合涂层相比单层的MAO涂层力学与摩擦性能得到显著提高,其中硬度升高48%,载荷为1 N时的平均摩擦系数降低32.3%,转速为700 r/min时,磨损率降低达到74%。CrN/MAO复合涂层与WC硬质合金球在干摩擦过程中,在表层CrN涂层被磨穿之前,复合涂层磨损形式以黏着磨损和疲劳磨损为主。在表层CrN涂层被磨穿MAO涂层未被磨穿前,复合涂层的磨损形式以三体磨粒磨损为主。 The friction coefficient of ceramic coating with porous structure prepared by micro-arc oxidation treatment (MAO) on the surface of magnesium-based material is higher under dry friction environment. In this paper, micro-arc oxidation combined with unbalanced magnetron sputtering Out of the MAO / CrN composite coating. The morphology, composition and friction and wear properties of the composite coatings were studied by scanning electron microscopy, microhardness test, X-ray diffraction energy dispersive spectroscopy and friction and wear tests. The results show that the mechanical and tribological properties of MAO / CrN composite coating are obviously improved compared with single layer MAO coating. The hardness increases by 48%, the average friction coefficient decreases by 32.3% and the rotation speed is 700 r / min, the wear rate decreased to 74%. CrN / MAO composite coating and WC cemented carbide ball in the dry friction process, before the CrN coating is worn through the surface, the composite coating wear forms of adhesive wear and fatigue wear-based. Before the surface CrN coating was worn through the MAO coating was not worn before the composite coating wear form of three-body abrasive wear-based.