Corrosion and kinetics of partial electrode reactions on carbon steel St3 with superhydrophobic coatings of three types were studied in 0.5 M NaCl and 50 g/L NaCl +400 mg/L H₂S solutions. The investigations were carried out on electrodes made of carbon steel St3 with a chemical composition, wt. %: C – 0.20; Mn – 0.50; Si – 0.15; P – 0.04; S – 0.05; Cr – 0.30; Ni – 0.20; Cu – 0.20, and Fe – 98.36. To obtain the type I coating, the metal surface was textured by an IR laser radiation of nanosecond duration followed by chemisorption of fluorobutylsilane out of a solution in n‐decane. To obtain a coating of type II, a nanoscale composite layer consisting of aggregates of aerosil nanoparticles was applied additionally to the outcome of type I method. To obtain a coating of type III, the metal surface after being textured by the infrared (IR) laser radiation of nanosecond duration was followed by chemisorption of fluoroxy silane. The influence of duration τ of the medium corrosive impact on protective effect of the superhydrophobic coating is considered. It was shown that upon reaching a steady state (after 72 h), the corrosion rate of steel with a superhydrophobic coating of I and II types in a 0.5 M NaCl solution is reduced by 23 ± 3 times compared with unprotected samples. Approximately the same picture is characteristic of electrodes with a coating of type III in a solution of 50 g/L NaCl +400 mg/L H₂S.

中文翻译：

---

用超疏水涂层保护碳钢在NaCl溶液中的腐蚀

研究了在0.5 M NaCl和50 g / L NaCl +400 mg / LH ₂ S溶液中具有三种类型的超疏水涂层的碳钢St3上部分电极反应的腐蚀和动力学。研究是在化学成分为wt。％的碳钢St3制成的电极上进行的。％：C – 0.20；锰– 0.50; Si – 0.15；P – 0.04；S – 0.05；铬– 0.30; 镍– 0.20; 铜– 0.20，铁– 98.36。为了获得I型涂层，金属表面通过纳秒持续时间的IR激光辐射进行纹理化，然后从n的溶液中化学吸附氟丁基硅烷癸烷 为了获得II型涂层，将由Aerosil纳米颗粒的聚集体组成的纳米级复合层额外应用于I型方法的结果。为了获得类型III的涂层，在经过纳秒持续时间的红外（IR）激光辐射进行纹理处理后，对金属表面进行化学吸附，然后进行氟硅烷的化学吸附。考虑了介质腐蚀持续时间τ对超疏水涂层防护效果的影响。结果表明，在达到稳态（72小时后）后，与未经保护的样品相比，在0.5 M NaCl溶液中具有I和II型超疏水涂层的钢的腐蚀速率降低了23±3倍。大约相同的图片是在50 g / L NaCl +400 mg / LH的溶液中具有III型涂层的电极的特性₂秒