电化学方法评定转锈涂料的耐蚀性能

目的研究某种转锈涂料对碳钢的转锈效果和耐蚀性能。方法运用电化学交流阻抗谱法测试转锈涂层阻抗值随时间的变化,同时观察涂层形貌,评定转锈涂料的耐蚀性能及其与底漆的匹配性能。运用盐雾试验法,通过观察划痕周围的腐蚀情况,评定转锈涂料的耐盐雾性能和附着性能。结果转锈涂料对锈蚀碳钢具有良好的转锈效果,转锈膜层耐蚀性能较好,与底漆匹配性良好,在碳钢表面的附着性良好。结论此种转锈涂料具有良好的转锈效果和耐蚀性,能有效提高碳钢的耐腐蚀性能。

Assessment of Corrosion Resistance of Rust-transforming Coatings Using Electrochemical Method

Objective To study the rust-transforming effect and the corrosion resistance of the rust-transforming coatings.Methods The change in impedance of the rust-transforming coatings with time was tested by Electrochemical Impedance Spectrometry and the morphology was observed. The corrosion resistance of rust-transforming coatings and the matching property were assessed. The salt-fog resistance and the adherence were assessed by salt-fog experiment and the corrosion section around scarification was observed. Results Rust-transforming coatings had good effects on rust transformation of rusted carbon steel, and the corrosion resistance of rust-transforming coatings was good, which matched well with the priming paint and had a high adherence on the surface of carbon steel. Conclusion The rust-transforming coatings showed good rust-transforming effect and corrosion resistance. The corrosion resistance of carbon steel was improved.