The recent development of the cold spray method has made it possible to deposit dense coating with good adhesion and with almost no change in the microstructure, which is promising in repairing damaged Al-based aircraft skin. In this work, the in-situ shot-peening-assisted low-pressure cold spray method was used to deposit Al-based dense coatings with good mechanical and corrosion protection properties on AA 2024-T3 alloy. The detailed microstructure, coating adhesion, and corrosion protection performance were systematically investigated. A dense microstructure with low porosity (<1.7%), high cohesive strength (>45 MPa) is achieved for the coatings. By comparison, Al 5083 coating exhibited the optimum mechanical properties. The Al and Al 5083 coatings reveal similar pitting resistance and repassivation ability. During long-term immersion test (>480 h) the corrosion resistance of Al 5083 coating surpassed that of CP Al coating. In conclusion, Al 5083 coating has a good combination of mechanical and anti-corrosion properties.

冷喷涂方法的最新发展使沉积具有良好附着力且几乎没有微观结构变化的致密涂层成为可能，这有望修复受损的铝基飞机蒙皮。在这项工作中，采用原位喷丸喷丸辅助低压冷喷涂法在AA 2024-T3合金上沉积具有良好机械和腐蚀防护性能的Al基致密涂层。系统地研究了详细的微观结构，涂层附着力和防腐性能。涂层具有低孔隙率（<1.7％），高内聚强度（> 45 MPa）的致密微观结构。相比之下，Al 5083涂层表现出最佳的机械性能。Al和Al 5083涂层显示出相似的耐点蚀性和再钝化能力。在长期浸泡试验（> 480小时）中，Al 5083涂层的耐蚀性超过了CP Al涂层。总之，Al 5083涂层具有良好的机械和抗腐蚀性能。