EIS of corrosion process of steel with zinc-rich epoxy/chlorinated rubber coatings

LI Wei; CAO Jingyi; XIONG Jinping; ZUO Yu

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EIS of corrosion process of steel with zinc-rich epoxy/chlorinated rubber coatings

更新时间：2025-12-10

- EIS of corrosion process of steel with zinc-rich epoxy/chlorinated rubber coatings
- CIESC Journal Issue 10, Pages: 2543-2547(2007)
- 作者机构：
  
  北京化工大学材料学院
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：05 October 2007，
  
  Published：05 October 2007
- 稿件说明：
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LI Wei, CAO Jingyi, XIONG Jinping, et al. EIS of corrosion process of steel with zinc-rich epoxy/chlorinated rubber coatings[J]. CIESC Journal, 2007, (10): 2543-2547.
DOI：

LI Wei, CAO Jingyi, XIONG Jinping, et al. EIS of corrosion process of steel with zinc-rich epoxy/chlorinated rubber coatings[J]. CIESC Journal, 2007, (10): 2543-2547. DOI：

摘要

采用环氧富锌作为底漆、氯化橡胶作为面漆，研究了涂层体系腐蚀过程中电化学阻抗谱(EIS)的变化。结果表明，腐蚀初期环氧富锌/氯化橡胶涂层体系中底漆的厚度比例与涂层的防护性能无关，而在腐蚀中后期，随底漆厚度比例适当增大，涂层自修复能力增强，离子等腐蚀介质在涂层中的传输速度得到显著延缓，涂层吸水率和孔隙率明显降低，涂层防护性能出现短时间升高。当环氧富锌底漆为涂层总厚度的2/3左右时，涂层体系的防护性能最好，而仅有底漆或面漆的体系则不具备良好的防护性能。

Abstract

The failure process of zinc-rich epoxy/chlorinated rubber coatings on Q235 steel was investigated by electrochemical impedance spectroscopy (EIS)In the initial period of exposure

EIS spectra showed that the protection effect of the coatings mainly came from the chlorinated rubber topcoatBut after a longer time of exposure

by increasing the zincrich epoxy primer thickness properly

the porosity of the coatings

the diffusion rate of ions and the absorbance of water in the coatings decreased remarkablyThe best protection was obtained for the coating systems with the thickness ratio of primer/topcoat about 2∶1For the systems of single primer or single topcoat

the protection effect of the coatings decreased quickly.

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CAO Jingyi

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Related Institution

北京化工大学材料科学与工程学院，海军涂料分析检测中心

扬州大学机械工程学院

北京大学环境科学与工程学院

北京化工大学材料科学与工程学院

海军涂料分析检测中心

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