环氧防锈漆在3种腐蚀环境中的电化学行为 |
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引用本文: | 张寒露,曹京宜,顿玉超,唐聿明,左禹. 环氧防锈漆在3种腐蚀环境中的电化学行为[J]. 腐蚀与防护, 2016, 0(12): 979-982. DOI: 10.11973/fsyfh-201612007 |
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作者姓名: | 张寒露 曹京宜 顿玉超 唐聿明 左禹 |
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作者单位: | 1. 北京化工大学材料科学与工程学院,北京100029;海军涂料分析检测中心,北京102442;2. 海军涂料分析检测中心,北京,102442;3. 北京化工大学材料科学与工程学院,北京,100029 |
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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。
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关 键 词: | 电化学阻抗谱 低频 环氧涂层 |
Electrochemical Behaviors of Epoxy Coatings in 3 Kinds of Corrosion Environments |
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Abstract: | 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 %00 NaCl solution < seawater immersion experiment < salt spray. |
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Keywords: | electochemical impedance spectroscopy low frequency epoxy coating |
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