Improvement of nickel nanocomposite coatings by combining zinc-doped TiO2 nanoparticles

  • Funda Ak AzemEmail author
  • Tulay Koc Delice


Pure nickel and compound of nickel coatings (Ni-TiO2 and Ni-Zn/TiO2) were coated on the steel material using Watts bath with the electrodeposition conditions. Effect of the nanoparticle type and current density on the coating structure, surface morphology of the coating, hardness of the coating, and the corrosion properties of the coatings are presented. Phase and elemental analysis of the coatings were carried out by XRD and EDS techniques, respectively. SEM was used to investigate the surface morphology of the coatings, and Vickers microhardness values were measured to determine the hardness variation of the coatings. NaCl solution (3.5 wt%) was used to evaluate the corrosion properties of the coatings by the potentiodynamic polarization tests. Corrosion current density of 2.890 μA/cm2 for pure nickel coating was improved to 0.379 μA/cm2 by the coating of Zn-doped TiO2 nanoparticles at the 7A/dm2 current density. Microhardness of the Zn-doped TiO2 coating was improved compared to the pure Ni coating.


Composite coatings Sol-gel processes Metal matrix composites Nanoparticles 


Funding information

The Scientific and Technological Research Council of Turkey (TUBITAK) and Dokuz Eylul University Department of Scientific Research Projects have supported this work with project numbers of 113R023 and 2014.KB.FEN.046, respectively.

Supplementary material

41779_2018_289_MOESM1_ESM.txt (1 kb)
ESM 1 (TXT 1 kb)


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Copyright information

© Australian Ceramic Society 2019

Authors and Affiliations

  1. 1.Department of Metallurgical and Materials EngineeringDokuz Eylul UniversityBucaTurkey
  2. 2.Department of Nanoscience and Nanoengineering, Institute of Applied Sciences and TechnologyDokuz Eylul UniversityBucaTurkey
  3. 3.The Graduate School of Natural and Applied SciencesDokuz Eylul UniversityBucaTurkey

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