Composite oxide films containing graphite were fabricated using the anodizing technique on AA2017- T4 aluminum alloy in diluted sulfuric acid (20 wt%). This study aims to evaluate the effect of graphite on the film growth and investigate its impact on the self-lubricating ability and durability of the composite films. The growth mechanism was determined by manipulating the anodizing time while the mechanical and tribological properties of the films were studied with different graphite content. The surface morphology, topography, and chemical compositions were examined with scanning electron microscopy (SEM), 3D optical profiler, and energy- dispersive spectroscopy (EDS), respectively. The microhardness was characterized at the surface and cross-section of the films by Vickers microhardness tester. The structure of the oxide films and graphite were studied by X-ray diffractometer (XRD) and Raman spectroscopy. The tribological characterization was investigated by using a ball-on-disk sliding test in dry condition. The growth of the film was initiated by the formation of the non-porous barrier layer at 5–10 min. The pores started to grow at 20 min and caused the break of the barrier layer. For this process, the complete development of porous composite oxide film can be achieved at 60 min with the pore dimension (width: 23.74 ± 8.91 μm; depth: 27.9 ± 9.09 μm). The thickness of 1 g/L oxide film at 60 min was about 32.45 ± 4.92 μm, approximately. The incorporation of graphite reduces the surface porosity of oxide films and improves the mechanical and tribological properties significantly. The service life of the composite oxide film is affected by the hardness and graphite-self-lubricated layer.

使用阳极氧化技术在AA2017-T4铝合金中的稀硫酸（20重量％）中制造包含石墨的复合氧化物膜。本研究旨在评估石墨对薄膜生长的影响，并研究其对复合薄膜自润滑能力和耐久性的影响。通过控制阳极氧化时间来确定生长机理，同时研究了不同石墨含量的薄膜的机械和摩擦学性能。分别用扫描电子显微镜（SEM），3D光学轮廓仪和能谱仪（EDS）检查了表面形态，形貌和化学成分。用维氏显微硬度计在膜的表面和横截面上表征显微硬度。用X射线衍射仪（XRD）和拉曼光谱研究了氧化膜和石墨的结构。通过在干燥条件下使用圆盘上的滑动试验研究了摩擦学特性。薄膜的生长是通过在5-10分钟内形成无孔阻隔层而开始的。孔在20分钟时开始生长，并导致阻挡层破裂。对于此过程，可以在60分钟内以孔尺寸（宽度：23.74±8.91μm；深度：27.9±9.09μm）完成多孔复合氧化物膜的完全显影。在60分钟时1 g / L氧化膜的厚度约为32.45±4.92μm。石墨的掺入降低了氧化膜的表面孔隙率并显着改善了机械和摩擦学性能。