本文采用电化学交流阻抗技术,研究了溶剂类型和组成对长醇酸清漆涂层在0.5 mol·L-1氯化钠中浸泡不同时间后耐腐蚀性能的影响.结果表明,含有不同溶剂的长醇酸清漆的保护效率随着溶剂的挥发性增加或给定挥发溶剂的组成增多而提高,这也从扫描电子显微镜和X-射线能量散射谱分析结果得到证实.此外,剥离面积,即金属表面由于有机涂层的剥落而导致腐蚀的面积,随溶剂挥发性的增强而减小. In this paper, electrochemical impedance spectroscopy (EIS) was used to study the effect of solvent type and composition on the corrosion resistance of alkyd varnish coatings immersed in 0.5 mol·L-1 sodium chloride for different time. The results showed that the long- The protective efficiency of the alkyd varnish increases with increasing volatility of the solvent or with an increase in the composition of the given volatile solvent, as evidenced by scanning electron microscopy and X-ray energy dispersive spectroscopy analysis. In addition, the peeled area, ie the metal surface The area of ​​corrosion due to exfoliation of the organic coating decreases with increasing volatility of the solvent.