Electrochemical Behaviors of Epoxy Coatings in 3 Kinds of Corrosion Environments
标 签 电化学阻抗谱 低频 环氧涂层 electochemical impedance spectroscopy low frequency epoxy coating
采用电化学阻抗谱（EIS）技术研究了环氧防锈漆经实海浸泡试验和质量分数3.5% NaCl溶液浸泡试验、盐雾试验2种实验室模拟试验后的电化学行为，测量了涂层试样在3种腐蚀环境中0.01 Hz低频阻抗（|Z|0.01 Hz），探究了实海浸泡试验和两种实验室模拟试验的相关性。结果表明: |Z|0.01 Hz在3种试验环境中的变化趋势相同，实海浸泡试验和2种实验室模拟试验的试验结果具有很好的相关性; 3种试验环境对涂层破坏作用由小到大依次为: 3.5% NaCl溶液浸泡试验<实海浸泡试验<盐雾试验。
Electrochemical behaviors of an epoxy coating in real sea immersion test, 3.5% (mass) NaCl solution immersion test and salt spray test were studied by electrochemical impedance spectroscopy ( EIS). Coating impedance in low frequency of 0.01 Hz (|Z|0.01 Hz) were tested in the 3 kinds of corrosion environments, and the relationships between real sea immersion test and 2 types of laboratory experiments were also analyzed. The results indicated that the trends of |Z|0.01 Hz in 3 kinds of corrosion environments were similar. The results from real sea immersion test and 2 types of laboratory experiments were correlated well, and the order of the damaging effect of the three corrosive environments on coating was as follows: 3.5% NaCl solution < seawater immersion experiment < salt spray.
中图分类号 TG174.4 DOI 10.11973/fsyfh-201612007
引用该论文: ZHANG Han-lu,CAO Jing-yi,DUN Yu-chao,TANG Yu-ming,ZUO Yu. Electrochemical Behaviors of Epoxy Coatings in 3 Kinds of Corrosion Environments[J]. Corrosion & Protection, 2016, 37(12): 979