Effect of nano yttria-stabilized zirconia on properties of Ni-20Cr composite coatings

Original scientific paper


  • Sukhjinder Singh Department of Mechanical Engineering, Punjabi University, Patiala, India
  • Khushdeep Goyal Department of Mechanical Engineering, Punjabi University, Patiala, India
  • Rakesh Bhatia Yadavindra Department of Engineering, Punjabi University Guru Kashi Campus, Damdama Sahib, India https://orcid.org/0000-0002-0320-3845




Thermal spray coatings, nanocomposites, porosity, hardness, microstructure, oxy-fuel, HVOF
Graphical Abstract


In the present work, 5 and 10 wt.% yttria-stabilized zirconia (YSZ) nanoparticles were reinforced in Ni-20Cr powder and deposited on boiler tube steel using a high-velocity oxy-fuel spraying process. The effect of YSZ reinforcement on microhardness, surface roughness and porosity were investi­ga­ted. The hardness was the highest for nanocomposite coating reinforced with 10 wt.% YSZ and hard­ness was found to increase with a decrease in porosity. The coating microstructure and elements were characterized using field emission scanning electron microscopy (FE-SEM) with an energy dispersive spectroscope (EDS). The constituents of the coating were identified using X-ray diffracto­meter. It was found that the composite coating with 10 wt.% YSZ reinforced nanocomposite coating has the highest microhardness, in the range of 1008-1055 hv. During the coating process, nano YSZ particles were dispersed in the gaps between the micrometric Ni-20Cr particles, providing a better coating matrix than conventional Ni-20Cr. The Ni-20Cr with 10 wt.% of YSZ nanoparticles showed better results in terms of mechanical and microstructural properties during the investigation.


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How to Cite

Singh, S., Goyal, K., & Bhatia, R. (2022). Effect of nano yttria-stabilized zirconia on properties of Ni-20Cr composite coatings: Original scientific paper. Journal of Electrochemical Science and Engineering, 12(5), 901–909. https://doi.org/10.5599/jese.1319