MIC Behavior of the Low Alloy Steel with Different Zn-Epoxy Coating in SRB Solution
MIC Behavior of the Low Alloy Steel with Different Zn-Epoxy Coating in SRB Solution
复制标题
不同环氧锌涂层的低合金钢在SRB溶液中的MIC行为
DOI：
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发表时间：
2011
期刊：
影响因子：
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通讯作者：
Chun Hui Li
中科院分区：
文献类型：
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作者：
Jun Wang;Q. Li;Yudong Fu;Chun Hui Li
采用电化学阻抗谱(EIS)、X射线衍射仪(X射线衍射仪)、扫描电子显微镜(SEM)等测试手段，研究了环氧片状和片状环氧锌层在硫酸盐还原菌(SRB)溶液中的微生物影响腐蚀(MIC)行为，结果表明片状环氧锌层的防护效果明显优于片状锌层。当样品浸泡在SRB溶液中时，颗粒状锌层中锌的溶解比片状锌层中的更严重。涂层中片状锌的屏蔽性能远高于颗粒状锌。片状锌层比颗粒状锌层致密得多，因此抗渗透性能更好。结果表明，片状锌层比颗粒状锌层具有更好的耐蚀性能。
The microbiological influenced corrosion (MIC) behavior of the low alloy steel with granular-Zn-epoxy and flaky-Zn-epoxy coating in the sulfate-reducing bacteria (SRB) solution was investigated with electrochemical impedance spectroscopy (EIS), X-rays diffraction (XRD), scanning electron microscope (SEM) etc. Results show that the protection effect of the flaky-Zn coating specimen is much better than the granular-Zn coating one. The dissolution of zinc is more severe in granular-Zn coating than in flaky-Zn coating when the specimen immersed in the SRB solution. The shielding property of flaky zinc is much higher than granular zinc in the coating. The flaky-Zn coating is much more compact than the granular-Zn coating and therefore the property of anti-infiltration is much better. We may conclude that the flaky-Zn coating exhibited more favorable corrosion resistance property than the granular one.