Gravimetric, Electrochemical and Theoretical Study on Corrosion of AA6061/3wt% SiC/3wt% B4C Hybrid Composite in Acid Medium Using EDTA

Gravimetric, Electrochemical and Theoretical Study on Corrosion of AA6061/3wt% SiC/3wt% B4C Hybrid Composite in Acid Medium Using EDTA

The corrosion behaviour of Al6061/3wt%SiC/3wt%B4C hybrid composite was investigated in the presence of 0.5M HCl medium using gravimetric, electrochemical, and theoretical methods. In the present work, ethylenediaminetetraacetic acid disodium (EDTA) was used as an eco-friendly inhibitor. EDTA showed...

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Bibliographic Details
Published in:Tribology in industry Vol. 44; no. 1; pp. 73 - 86
Main Authors: Robledo, J.D.E., Shetty, P., Kumari, P.P., Shankar, M.C.G., Kagatikar, S.
Format: Journal Article
Language:English
Published: Kragujevac University of Kragujevac, Faculty of Engineering 15-03-2022
University of Kragujevac
Subjects:
aa6061 hybrid composite
Adsorption
Aluminum base alloys
Atomic force microscopy
Boron carbide
Corrosion
corrosion inhibition
Corrosion prevention
Corrosion tests
edta
Ethylenediaminetetraacetic acids
Hybrid composites
Microscopy
potentiodynamic
Surface analysis (chemical)
Surface chemistry
surface study
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Summary:The corrosion behaviour of Al6061/3wt%SiC/3wt%B4C hybrid composite was investigated in the presence of 0.5M HCl medium using gravimetric, electrochemical, and theoretical methods. In the present work, ethylenediaminetetraacetic acid disodium (EDTA) was used as an eco-friendly inhibitor. EDTA showed mixed inhibitor behavior, and its inhibition performance decreased with rising temperature from 303 to 323 K. EDTA evinced maximum inhibition efficiency of 82 % at 1.074 mM. The kinetic and thermodynamic results controlling corrosion were evaluated. The inhibition process occurred through the adsorption of EDTA on the hybrid composite sample, which obeyed Langmuir's adsorption isotherm. The experimental results were validated by theoretical study. The corroded and inhibited specimen's surface analysis performed using scanning electron microscopy (SEM) and atomic force microscopy (AFM) confirmed the adsorption of EDTA on the hybrid composite surface.
ISSN:0354-8996
2217-7965
DOI:10.24874/ti.1052.02.21.05