Effect of additives on nanocrystalline bright Zn–Ni–Fe alloy electrodeposit properties

ABSTRACT

The nanocrystalline, bright, ternary Zn–Ni–Fe alloy electrodeposit has been developed using additives such as tetradecyltrimethylammonium bromide and thiosemicarbazide on mild steel. The microstructure, corrosion resistance, hardness and tribological behaviour of bright Zn–Ni–Fe alloy deposit were analysed. The study revealed that additives modify the morphology, orientation and composition of the Zn–Ni–Fe alloy deposit. The morphological, orientation and chemical composition changes play a significant role by improving corrosion resistance and reducing wear and friction of deposit. Simultaneously, the effect of iron and TSC in plating bath on the corrosion resistance and microhardness of electrodeposited Zn–Ni–Fe coating has been investigated.

KEYWORDS:

• Electrodeposition
• microstructure
• corrosion resistance
• impedance
• wear resistance
• thiosemicarbazide

Acknowledgements

The authors thank the Department of Chemistry, Bangalore University for providing the research facilities. We acknowledge Mr Shamsundar, Indian Institute of Science for the technical support.

Disclosure statement

No potential conflict of interest was reported by the authors.

ORCID

K. O. Nayana http://orcid.org/0000-0002-5955-6340

S. A. Prashanth http://orcid.org/0000-0002-9049-4862

M. Pandurangappa http://orcid.org/0000-0001-7492-3893

Additional information

Funding

The authors are grateful to UGC, New Delhi, India for the award of Post-Doctoral Fellowship to K. O. Nayana [Award No: F.15-1/2015-16/PDFWM-2015-17-KAR-31527(SA-II)].