用电化学阻抗谱（EIS）技术考察SO2和NaCl对金属大气腐蚀影响的研究日趋广泛，但针对铜的还不多。为此，在实验室内模拟舍有150mg／L SO2气体的大气环境，采用电化学阻抗谱（EIS）法研究沉积3．75μg／cm^2 NaCl时铜的初期大气腐蚀规律，用腐蚀监测仪实时检测了铜电极的溶液电阻（Ra）、极化电阻（Rp）等参数，利用Stem—Geary公式由Rp计算铜的腐蚀速率，并用环境扫描电镜、能谱仪和X射线衍射仪分析腐蚀形貌与腐蚀产物。结果表明：SO2与NaCl均加速了铜的腐蚀速率；铜表面沉积NaCl后，吸湿性增强，铜表面易形成水膜，大气中的SO2溶解于水膜中降低了水膜的pH值，加速了铜腐蚀产物的生成；NaCl对铜的腐蚀大于SO2；SO2与NaCl协同作用下铜的主要腐蚀产物是Cu4SO4（OH）6，CuO2，CuSO4，Cu2Cl（OH）3。
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