A Study on the mechanism of electrodeposition of Ni/SiC composite coatings using impedance technique

  • Sohrabi A
  • Dolati A
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Abstract

Ni/SiC nanocomposite coatings were electrodeposited using Watts type
bath and different SiC particle size. The electrodeposition behavior of
Ni/SiC nanoelectrocomposites was studied using electrochemical
techniques such as impedance spectroscopy (EIS) and voltammetry. In this
study it was shown that SiC particles modify the EIS diagram and
voltammograms as well as surface morphology of electrodeposited layers.
Experimental results showed that SiC particles not only affect the
formation of intermediate species and decrease charge transfer
resistance but also increase the nucleation sites for nickel
electrodeposition and thus affect the microstructure of electrodeposited
Ni/SiC nanocomposites. Furthermore, SiC particles promote further
adsorption/desorption of intermediates of nickel on the electrode
surface, as shown by impedance studies.

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Authors

  • A Sohrabi

  • A Dolati

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