Anti-corrosion and microstructural properties of Ni–W alloy coatings: effect of 3,4-Dihydroxybenzaldehyde
In the present work impact of 3,4-Dihydroxybenzaldehyde on the microstructural and corrosion behavior of nanocrystalline Ni-W alloy coatings has been elucidated. A systematic investigation on the protection ability of Ni-W alloy coatings in 0.2 M H2SO4 solution was done with the aid of tafel polariz...
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doaj-281e8303c33b4e71b926634a755ec06a2020-11-25T02:02:24ZengElsevierHeliyon2405-84402019-03-0153e01288Anti-corrosion and microstructural properties of Ni–W alloy coatings: effect of 3,4-DihydroxybenzaldehydeU. Pramod Kumar0S. Shanmugan1C. Joseph Kennady2S.M.A. Shibli3Department of Chemistry, SRM Institute of Science and Technology, Kattankulathur Campus, Chennai, 603203, Tamil Nadu, India; School of Materials Science and Engineering, Jiangxi University of Science and Technology, 156 Hakka Road, Ganzhou, 341000, PR China; Corresponding author.Department of Chemistry, SRM Institute of Science and Technology, Kattankulathur Campus, Chennai, 603203, Tamil Nadu, IndiaDepartment of Chemistry, Karunya Institute of Technology and Sciences, Karunya Nagar, Coimbatore, 641114, Tamil Nadu, IndiaDepartment of Chemistry, Kerala University, Karyavattom Campus, Trivandrum, 695, Kerala, IndiaIn the present work impact of 3,4-Dihydroxybenzaldehyde on the microstructural and corrosion behavior of nanocrystalline Ni-W alloy coatings has been elucidated. A systematic investigation on the protection ability of Ni-W alloy coatings in 0.2 M H2SO4 solution was done with the aid of tafel polarization curves and electrochemical impedance spectroscopy (EIS) studies. Corrosion performance of the alloy films obtained in the absence and in the presence of different concentrations of 3,4-Dihydroxybenzaldehyde (0–500 ppm) in the bath was explained in the light of additive concentration. Compared to the blank and other concentrations of additive, 250 ppm of additive containing bath was predicted as the most promising one for the introduced citrate based Ni-W alloy electrodeposition. Low corrosion rate (0.06 mm/year) and high charge transfer resistance (2505.3 Ω cm2), for the electrodeposits, obtained from the bath containing 250 ppm of 3,4-Dihydroxybenzaldehyde supports for its high anticorrosion performance. The marked difference in the corrosion resistance property is ascribed to the formation of fine-grained deposits, smooth surface, and inclusion or adsorption of additive within the deposits in the presence of the additive (250 ppm) in the bath. Further, the adsorption of additive molecules on the metal surface was explored with the help of quantum chemical calculations based on DFT.http://www.sciencedirect.com/science/article/pii/S240584401837573XMaterials chemistryElectrochemistry |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
U. Pramod Kumar S. Shanmugan C. Joseph Kennady S.M.A. Shibli |
spellingShingle |
U. Pramod Kumar S. Shanmugan C. Joseph Kennady S.M.A. Shibli Anti-corrosion and microstructural properties of Ni–W alloy coatings: effect of 3,4-Dihydroxybenzaldehyde Heliyon Materials chemistry Electrochemistry |
author_facet |
U. Pramod Kumar S. Shanmugan C. Joseph Kennady S.M.A. Shibli |
author_sort |
U. Pramod Kumar |
title |
Anti-corrosion and microstructural properties of Ni–W alloy coatings: effect of 3,4-Dihydroxybenzaldehyde |
title_short |
Anti-corrosion and microstructural properties of Ni–W alloy coatings: effect of 3,4-Dihydroxybenzaldehyde |
title_full |
Anti-corrosion and microstructural properties of Ni–W alloy coatings: effect of 3,4-Dihydroxybenzaldehyde |
title_fullStr |
Anti-corrosion and microstructural properties of Ni–W alloy coatings: effect of 3,4-Dihydroxybenzaldehyde |
title_full_unstemmed |
Anti-corrosion and microstructural properties of Ni–W alloy coatings: effect of 3,4-Dihydroxybenzaldehyde |
title_sort |
anti-corrosion and microstructural properties of ni–w alloy coatings: effect of 3,4-dihydroxybenzaldehyde |
publisher |
Elsevier |
series |
Heliyon |
issn |
2405-8440 |
publishDate |
2019-03-01 |
description |
In the present work impact of 3,4-Dihydroxybenzaldehyde on the microstructural and corrosion behavior of nanocrystalline Ni-W alloy coatings has been elucidated. A systematic investigation on the protection ability of Ni-W alloy coatings in 0.2 M H2SO4 solution was done with the aid of tafel polarization curves and electrochemical impedance spectroscopy (EIS) studies. Corrosion performance of the alloy films obtained in the absence and in the presence of different concentrations of 3,4-Dihydroxybenzaldehyde (0–500 ppm) in the bath was explained in the light of additive concentration. Compared to the blank and other concentrations of additive, 250 ppm of additive containing bath was predicted as the most promising one for the introduced citrate based Ni-W alloy electrodeposition. Low corrosion rate (0.06 mm/year) and high charge transfer resistance (2505.3 Ω cm2), for the electrodeposits, obtained from the bath containing 250 ppm of 3,4-Dihydroxybenzaldehyde supports for its high anticorrosion performance. The marked difference in the corrosion resistance property is ascribed to the formation of fine-grained deposits, smooth surface, and inclusion or adsorption of additive within the deposits in the presence of the additive (250 ppm) in the bath. Further, the adsorption of additive molecules on the metal surface was explored with the help of quantum chemical calculations based on DFT. |
topic |
Materials chemistry Electrochemistry |
url |
http://www.sciencedirect.com/science/article/pii/S240584401837573X |
work_keys_str_mv |
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