The inhibition action of carmine and fast green dyes on corrosion of mild steel in 0.5 M HCl was investigated using mass loss, polarization and electrochemical impedance (EIS) methods at 300 K. The inhibition efficiency was found to increase with increasing concentration of the inhibitors. The inhibition efficiency of fast green (%η - 98) is higher than that of carmine (%η - 92) and found to be maximum in 1 × 10^-3 M solution. The inhibitors act as mixed type with predominant cathodic effect. The inhibitors were adsorbed on the mild steel surface according to the Temkin adsorption isotherm. The surface morphology of the mild steel specimens was evaluated using SEM images.

中文翻译：

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胭脂红和固绿作为盐酸溶液中低碳钢的缓蚀剂

使用质量损失，极化和电化学阻抗（EIS）方法在300 K下研究了胭脂红和固绿染料对低碳钢在0.5 M HCl中的腐蚀的抑制作用。发现随着抑制剂浓度的增加，抑制效率增加。坚牢绿色（％η-98）的抑制效率高于胭脂红（％η-92）的抑制效率，并且在1×10 ^-3 M溶液中达到最高。抑制剂是具有主要阴极作用的混合类型。根据Temkin吸附等温线将抑制剂吸附在低碳钢表面上。使用SEM图像评估低碳钢样品的表面形态。