Mild steel green inhibition byHardwickia binata Roxb. leaves extract in acid medium

The intent of this paper is to investigate the leaves extract ofHardwickia binata Roxb. (HBL) as corrosion inhibitor for mild steel in aerated 1 M HCl and 0.5 M H(2)SO(4)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.

Automated summary

This study investigates the corrosion inhibition properties of Hardwickia binata Roxb. leaves extract in hydrochloric acid and sulfuric acid solutions using weight loss and electrochemical techniques. The results show that the HBL extract can effectively inhibit corrosion under both room temperature and refrigerated conditions. Analysis using SEM and FT-IR helps to derive the corrosion inhibition mechanism of the extract.