采用电流回复处理、电化学和化学浸泡等方法研究了铝硫酸阳极氧化膜及膜的双层结构对膜层在NaCl溶液中的孔蚀行为。实验表明:硫酸阳极氧化膜具有较高的耐孔蚀性能,膜中的多孔层起着主要作用。多孔层的厚度与孔径是影响膜层耐孔蚀性能的主要因素,多孔层厚、孔径小,膜层耐孔蚀性能就好;反之就差。 The pitting corrosion behavior of the film in NaCl solution was investigated by current recovery treatment, electrochemical and chemical immersion methods. Experiments show that: sulfuric acid anodized film has high resistance to pitting corrosion, the porous layer in the film plays a major role. The thickness and pore size of the porous layer are the main factors affecting the pitting resistance of the film. The porous layer is thick, the pore size is small, and the pitting resistance of the film is good; on the contrary, it is poor.