Open AccessAshwagandha Extract as Green Sustainable Corrosion Inhibitor for Aluminum in Acidic Solutions
Author(s) -
Abd El-Aziz,
Sara F. Fouda,
Safaa Hussein Salah El-Din,
H Etaiw,
Mohamed A. Bakr,
K. Shalabi
Publication year - 2020
Publication title -
biointerface research in applied chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.216
H-Index - 11
ISSN - 2069-5837
DOI - 10.33263/briac112.97199734
Subject(s) - corrosion , physisorption , x ray photoelectron spectroscopy , dielectric spectroscopy , adsorption , hydrochloric acid , polarization (electrochemistry) , langmuir adsorption model , electrochemistry , chemistry , corrosion inhibitor , aluminium , analytical chemistry (journal) , materials science , nuclear chemistry , chemical engineering , inorganic chemistry , metallurgy , chromatography , electrode , engineering
In this study, the employment of Ashwagandha extract (AE) as a green sustainable corrosion inhibitor for aluminum in one molar hydrochloric acid solutions was examined utilizing “mass loss (ML), electrochemical frequency modulation (EFM), electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization (PP) measurements”. The surface examination was analyzed utilizing atomic force microscopy (AFM) and X-ray photoelectron spectroscopy (XPS) analysis. The effect of temperature on corrosion demeanor with adding a different dose of AE was investigated within the temperature varieties of 25-45 ºC by ML strategy. The curves of polarization reveal that AE is considered as a mixed sort inhibitor. The performance of inhibition rises with raising the AE concentration and diminished with the temperature ascending. The adsorption of the inhibitor on aluminum surface complies with the Langmuir’s adsorption isotherm and is considered as physisorption. The outcomes attained from chemical and electrochemical methods are in good accord.