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Your search keyword '"Bothi Raja P"' showing total 4 results
Start Over Author "Bothi Raja P" Topic mild steel
4 results on '"Bothi Raja P"'

1. Green Corrosion Inhibition of Mild Steel by Xylopia ferruginea in 1 M HCl Solution

Author

Elyn Amira, W. A. W., Rahim, A. A., Osman, H., Bothi Raja, P., Awang, K., Cavas-Martínez, Francisco, Editorial Board Member, Chaari, Fakher, Series Editor, di Mare, Francesca, Editorial Board Member, Gherardini, Francesco, Series Editor, Haddar, Mohamed, Editorial Board Member, Ivanov, Vitalii, Series Editor, Kwon, Young W., Editorial Board Member, Trojanowska, Justyna, Editorial Board Member, Jalar, Azman, editor, Embong, Zaidi, editor, Othman, Norinsan Kamil, editor, Yaakob, Najmiddin, editor, and Bakar, Maria Abu, editor

Published
2023
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3. Improved corrosion resistance of mild steel against acid activation: Impact of novel Elaeis guineensis and silver nanoparticles.

Author

Ali Asaad, Mohammad, Sarbini, Noor Nabilah, Sulaiman, Arizu, Ismail, Mohammad, Huseien, Ghasan Fahim, Abdul Majid, Zaiton, and Bothi Raja, Pandian

Subjects
OIL palm, CORROSION resistance, ACID throwing, MORPHOLOGY, ELECTRIC impedance measurement
Abstract

Influence of novel green Elaeis guineensis (EG) and silver nanoparticles (AgNPs) on the improved corrosion resistance of mild steel against acute acid attack is reported. Such EG/AgNPs were synthesized from palm oil leaf extracts and used as inhibitor with varying contents to inspect the feasibility of modifying the acid (1 M HCl (aq) ) mediated anti-corrosion behaviour of mild steel. The structural and morphological properties of the extracted EG/AgNPs inhibitor (in powder form) were determined using TEM, XRD, and EDX analyses. Furthermore, the acid solution exposed mild steel specimens were characterized via FESEM, EDX, AFM, XRD, weight loss, polarization and electrochemical impedance measurements. Mild steel surface was found to adsorb the EG/AgNPs and formed a protective film advantageous for inhibiting the acid attack. Steel specimen incorporated with 10% (v/v) of EG/AgNPs inhibitor revealed maximum inhibition efficiency of 94.1%. [ABSTRACT FROM AUTHOR]

Published
2018
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4. Elucidation of the Corrosion Inhibition of Mild Steel in 1.0 M HCl by Catechin Monomers from Commercial Green Tea Extracts.

Author

Nofrizal, S., Rahim, Afidah, Saad, Bahruddin, Bothi Raja, P., Shah, Affaizza, and Yahya, S.

Subjects
CATECHIN, CORROSION & anti-corrosives, MILD steel, ELECTROCHEMICAL analysis, IMPEDANCE spectroscopy, HIGH performance liquid chromatography
Abstract

The inhibitive action of commercial green tea extracts on mild steel (MS) in a 1.0 M hydrochloric acid solution was investigated by weight loss, potentiodynamic polarization, and electrochemical impedance spectroscopy (EIS). A high-performance liquid chromatographic (HPLC) analysis showed conclusively that of the eight catechin monomers and caffeine found in the original extracts, only four components were responsible for the inhibition of MS. The decreasing adsorption capacity of monomers on MS is related to the stereochemistry of molecules and the number of phenolic groups, and it is as follows: epigallocatechin gallate > epicatechin gallate > epigallocatechin > epicatechin. Adsorption of green tea extract constituent was found to follow Langmuir adsorption isotherm and the calculated Gibb's free energy values indicated the physisorption of inhibitor over MS surface. Physisorption was supported well by the potential zero charge (PZC) and molecular surface energy-level calculations. [ABSTRACT FROM AUTHOR]

Published
2012
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