@article{MAKHILLJEAS2017122014917,
    title = {Inhibitory Effect of Extracts of <i>Amella radican</i> on Corrosion of
Carbon Steel Sheets in HCl Solution},
    journal = {Journal of Engineering and Applied Sciences},
    volume = {12},
    number = {20},
    pages = {5247-5252},
    year = {2017},
    issn = {1816-949x},
    doi = {jeasci.2017.5247.5252},
    url = {https://makhillpublications.co/view-article.php?issn=1816-949x&doi=jeasci.2017.5247.5252},
    author = {Realpe,Cuadros and},
    keywords = {Inhibitor,corrosion,carbon steel,extracts,Acmella radicans,electrochemistry},
    abstract = {The measurement of the corrosion inhibiting capacity of the extracts of <i>Acmella radicans</i> was carried
out in Hydrochloric acid (HCl) on carbon steel sheets. In the first instance an extraction was conducted in
aqueous medium with the Soxhlet equipment. Subsequently, a phytochemical characterization is performed to
identify the presence of chemical compounds with anticorrosive potential. It was evidenced the presence of
coumarins, flavonoids and tannins. The latter by its OH-group around the aromatic rings, like the carbonyl
groups can interact with the cations on the surface of the adsorbed metal which protects it. The tannins were
those with the main concentration 2.82 g/L while saponins and triterpenes had practically no presence in this
extract and the flavonoids and coumarins had a lower concentration than tannins 0.94 and 0.06 g/L,
respectively. The anti-corrosion capacity was measured by weight loss tests and Linear Scanning
Voltamperometry (LSV) where 1 Molar (M) solutions of HCl were prepared with inhibitor concentrations based
on extracts of Acmella ranging from 2400, 4800 and 7200 parts per million (ppm). The concentrations of 4800 and
7200 ppm were found to have the highest efficacy inhibitor with values above 80%. The Linear Sweep
Voltamperometry (LSV) test reveals the mixed character of the inhibitor and a change in the cathodic of the
branch.}
    }