Copper-zinc coated samples were prepared by a low-pressure cold spray technique on 45# steel substrate and 45# steel plus chrome-plated substrate. Corrosion performance of coatings and coatings plus chrome plating layer was investigated by static soaking and copper accelerated acetate spray corrosion test (CASS). The microstructure and elements valence stage of the coating and chrome plating layer before and after corrosion were characterized by SEM and XPS. The results show that the corrosion resistance of copper-zinc coating is better than that of copper-zinc coating plus chrome plating layer during static corrosion. In the CASS test, with the increase of zinc content in the original powder, the corrosion resistance of the coating sample and the coating plus chrome plating sample is improved. When the copper-zinc ratio is 6:4, the corrosion resistance of the corresponding coating sample, the coating plus chrome layer sample and the pure chrome layer reaches the sixth grade. Copper and zinc coatings are corroded in the corrosive liquid due to electrochemical corrosion and chlorination. The corrosion products are mainly Zn(OH)2, Cu2O and CuCl2. In the process of corrosion of copper-zinc coating plus chrome-plated layer samples, the corrosion of zinc can play a role in slowing the corrosion of chrome plating. The effect of the mitigation together with the copper film deposited on the chrome-plated layer protects the chrome-plated layer and enhances its corrosion resistance. © 2020, Science Press. All right reserved.