Abstract The present study evaluates an anticorrosive system of epoxy primers applied on carbon steel coupons under different surface preparation techniques: dry abrasive blasting up to Sa 2½, wet abrasive blasting up to Sa 2½ and mechanical treatment up to SSPC SP-11. The epoxy primers were pigmented with zinc phosphate, commonly used in offshore structures, on which intermediary and anti-scaling paints are applied. The components of this primers system were analyzed through Fourier transform infrared spectroscopy (FTIR) while the corrosion protection was analyzed by electrochemical impedance spectroscopy (EIS) and potential monitoring, as well as the adhesion to the coupons’ surface immersed in 3.5%w/v NaCl solution (3.5 g of NaCl in 100 mL of solution). The results showed a better epoxy system adhesion to coupons surface prepared by dry abrasive blasting to Sa 2½. According to the electrochemical results, better corrosion protection was observed in samples prepared by wet abrasive blasting up to Sa 2½.

中文翻译：

---

应用于用各种机械研磨处理制备的钢表面的两种环氧底漆系统的防腐性能

摘要 本研究评估了在不同表面处理技术下涂在碳钢试样上的环氧底漆防腐系统：干喷砂达到 Sa 2½、湿喷砂喷砂达到 Sa 2½ 和机械处理达到 SSPC SP-11。环氧底漆用磷酸锌着色，通常用于海上结构，在其上涂有中间漆和防垢漆。该底漆系统的成分通过傅里叶变换红外光谱 (FTIR) 进行分析，而腐蚀保护通过电化学阻抗谱 (EIS) 和电位监测进行分析，以及对浸入 3.5%w/v 的试样表面的附着力NaCl 溶液（100 mL 溶液中含有 3.5 g NaCl）。结果表明，环氧树脂系统对通过干法喷砂制备的试样表面具有更好的附着力，达到 Sa 2½。根据电化学结果，在通过湿磨料喷砂制备的样品中观察到更好的腐蚀保护，最高可达 Sa 2½。