Abstract The intent of this paper is to investigate the leaves extract of Hardwickia binata Roxb. (HBL) as corrosion inhibitor for mild steel in aerated 1 M HCl and 0.5 M H2SO4 solutions using weight loss and electrochemical techniques. Increasing the immersion period of the system enhanced inhibition efficiency of HBL extract in 1 M HCl, but decreased efficiency in 0.5 M H2SO4. The stability and durability of the extract was evaluated under room temperature (RT) and refrigerated condition (RC) by weight loss method. The results show that HBL extract was found to inhibit both cathodic and anodic partial reactions of the corrosion process, proving the extract as mixed-type inhibitor. The morphology of the surface of the specimens was analyzed using Scanning Electron Microscopy (SEM), Energy-dispersive X-ray analysis and optical laser Profilometric studies. The possible mode of corrosion inhibition of HBL extract was derived using FT-IR studies.

中文翻译：

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Hardwickia binata Roxb 对低碳钢绿色的抑制作用。在酸性介质中的叶子提取物

摘要 本文的目的是研究Hardwickia binata Roxb 的叶子提取物。(HBL) 作为低碳钢在充气 1 M HCl 和 0.5 M H2SO4 溶液中的缓蚀剂，使用失重和电化学技术。增加系统的浸泡时间提高了 HBL 提取物在 1 M HCl 中的抑制效率，但在 0.5 M H2SO4 中降低了效率。通过失重法在室温 (RT) 和冷藏条件 (RC) 下评估提取物的稳定性和耐久性。结果表明，发现 HBL 提取物抑制腐蚀过程的阴极和阳极部分反应，证明提取物是混合型抑制剂。使用扫描电子显微镜（SEM）分析样品表面的形貌，能量色散 X 射线分析和光学激光轮廓测量研究。HBL 提取物的可能腐蚀抑制模式是使用 FT-IR 研究得出的。