Electrochemical and thermomechanical behavior of nickel–graphene oxide (2-4L GO) nanocomposite coatings

In this research work, nanocomposite coatings of nickel reinforced with graphene oxide (GOs) were produced by electrodeposition on steel substrate discs from the modified Watts bath. The resultant coatings were evaluated in terms of their surface morphology by atomic force microscopy and thermomecha...

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Bibliographic Details
Published in:Applied physics. A, Materials science & processing Materials science & processing, 2021-03, Vol.127 (3), Article 172
Main Authors: Abdul Karim, M. R., Raza, S. A., Haq, E. U., Khan, K. I., Taimoor, A. A., Khan, M. I., Pavese, M., Fino, P.
Format: Article
Language:English
Subjects:
Applied physics
Atomic force microscopy
Characterization and Evaluation of Materials
Coated electrodes
Coatings
Condensed Matter Physics
Corrosion resistance
Electrochemical corrosion
Grain boundaries
Graphene
Homogeneity
Machines
Manufacturing
Materials science
Morphology
Nanocomposites
Nanotechnology
Nickel
Optical and Electronic Materials
Physics
Physics and Astronomy
Plating baths
Processes
Substrates
Surface roughness
Surfaces and Interfaces
Thermomechanical properties
Thin Films
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Summary:In this research work, nanocomposite coatings of nickel reinforced with graphene oxide (GOs) were produced by electrodeposition on steel substrate discs from the modified Watts bath. The resultant coatings were evaluated in terms of their surface morphology by atomic force microscopy and thermomechanical and electrochemical corrosion characteristics. The electrodeposited coatings showed variation in the electrochemical and thermomechanical behavior as the function of GO content where they show the optimum characteristics for 0.1 wt.% GO. The relatively lower concentrations of GO produced composites with greater surface homogeneity and lower roughness, whereas when the GO content is increased, the coatings show increased surface roughness. Electrochemical corrosion resistance of nickel is increased by incorporation of GO up to 0.1 wt.% due to decreased grain boundary area in the coatings and the uniform dispersion of the nanophase ensured by prior probe sonication and magnetic stirring during the co-deposition. The nickel composite coatings with 0.1 wt.% GO also showed improved thermomechanical behavior with higher recovery at 473 K.
ISSN:0947-8396
1432-0630
DOI:10.1007/s00339-021-04307-0