Abstract

The inhibitory effect of a new derivative of the indazole family, namely, (Z)-2-(1-methyl-5-nitro-1H-indazol-4-yl)-3-(3-nitrophenyl) acrylonitrile (51K2) against corrosion of carbon steel in 1 M HCl medium at a temperature of 25°C has been evaluated by different techniques such as gravimetric methods, potential-intensity curves, and electrochemical impedance spectroscopy. The impact of the concentration on the inhibition efficiency was also studied. The results of weight loss measurements and electrochemical analyses obtained showed that the addition of 51K2 increases the inhibition efficiency by decreasing the corrosion rate, with a maximum inhibitory efficacy of 80%. In other words, 51K2 is a good anodic-type corrosion inhibitor of carbon steel in 1 M HCl.

中文翻译：

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吲唑衍生物在 1 M HCl 中对碳钢的缓蚀性能

摘要

吲唑家族新衍生物，即 ( Z )-2-(1-methyl-5-nitro- 1H -indazol-4-yl)-3-(3-nitrophenyl) 丙烯腈 (51K2) 的抑制作用碳钢在 25°C 温度下在 1 M HCl 介质中的抗腐蚀能力已通过重量法、电位-强度曲线和电化学阻抗谱等不同技术进行了评估。还研究了浓度对抑制效率的影响。失重测量和电化学分析结果表明，51K2的加入通过降低腐蚀速率来提高缓蚀效率，最大缓蚀效率为80%。换言之，51K2 在 1 M HCl 中是一种良好的碳钢阳极型缓蚀剂。