The impact of an aqueous extract of Bauhinia Blakeana leaves (AEBBL) in controlling the corrosion of mild steel in bore well water medium has been demonstrated by mass loss method and electrochemical measurements. The extract is characterized by Fourier-Transform Infrared Spectroscopy (FTIR) and the active ingredients present in the AEBBL are identified by Gas Chromatography-Mass Spectrometry (GC-MS). The surface morphology is examined with the help of Scanning electron microscopy (SEM) and the surface roughness analysis is done by Atomic force microscopy (AFM). Weight loss method reveals that of the extract offers a maximum corrosion inhibition efficiency of 96.62 . Potentiodynamic polarization study (PDP) and Electrochemical impedance spectroscopy (EIS) are used to study the mechanistic aspects of corrosion inhibition. Both the double layer capacitance (C_dl) and corrosion current (I_corr) values decreases while the charge transfer resistance (R_ct) value increases with the increase in concentration of AEBBL. The potentiodynamic polarisation reveal that AEBBL acts as mixed type inhibitor with primarily cathodic effectiveness. SEM and AFM documented the development of shielding coating on the mild steel surface.

中文翻译：

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洋紫荆叶片水提物抑制井水中低碳钢腐蚀的绿色策略

洋紫荆水提取物的影响通过质量损失法和电化学测量证明了叶片（AEBBL）在控制井孔水介质中低碳钢的腐蚀中的作用。提取物通过傅里叶变换红外光谱（FTIR）进行表征，AEBBL中存在的活性成分通过气相色谱-质谱（GC-MS）进行鉴定。借助扫描电子显微镜（SEM）检查表面形态，并通过原子力显微镜（AFM）进行表面粗糙度分析。失重法揭示了提取物的最大缓蚀效率为96.62。电位动力极化研究（PDP）和电化学阻抗谱（EIS）用于研究缓蚀机理。两者的双层电容（C _dl随着AEBBL浓度的增加，腐蚀电流（I _corr）值减小，而电荷转移电阻（R _ct）值增加。电位动力学极化显示，AEBBL充当混合型抑制剂，主要具有阴极效力。SEM和AFM记录了低碳钢表面屏蔽涂层的发展。