环氧防锈漆在3种腐蚀环境中的电化学行为  

Electrochemical Behaviors of Epoxy Coatings in 3 Kinds of Corrosion Environments

作　　者：张寒露[1,2] 曹京宜[2] 顿玉超 唐聿明[1] 左禹[1] 

机构地区：[1]北京化工大学材料科学与工程学院,北京100029 [2]海军涂料分析检测中心,北京102442

出　　处：《腐蚀与防护》2016年第12期979-982,共4页Corrosion & Protection

摘　　要：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.

关 键 词：电化学阻抗谱 低频 环氧涂层 

分 类 号：TG174.4[金属学及工艺—金属表面处理]