TY - JOUR
T1 - Gravimetric, Electrochemical and Theoretical Study on Corrosion of AA6061/3wt% SiC/3wt% B4C Hybrid Composite in Acid Medium Using EDTA
AU - Robledo, Juan David Escobar
AU - Shetty, Prakasha
AU - Kumari, P. Preethi
AU - Shankar, M. C.Gowri
AU - Kagatikar, Sneha
N1 - Funding Information:
J.D.E. Robledo gratefully acknowledged the Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal, for providing the laboratory facilities.
Publisher Copyright:
© 2022 Published by Faculty of Engineering.
PY - 2022/3
Y1 - 2022/3
N2 - 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.
AB - 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.
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U2 - 10.24874/ti.1052.02.21.05
DO - 10.24874/ti.1052.02.21.05
M3 - Article
AN - SCOPUS:85128774380
SN - 0354-8996
VL - 44
SP - 73
EP - 86
JO - Tribology in Industry
JF - Tribology in Industry
IS - 1
ER -