Study of the mechanical and structural properties of Zn-Ni-Co ternary alloy electroplating

Dikici T., Culha O., Toparli M.

JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, vol.7, no.6, pp.787-792, 2010 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 7 Issue: 6
  • Publication Date: 2010
  • Doi Number: 10.1007/s11998-010-9250-9
  • Journal Name: JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.787-792
  • Keywords: Coating materials, Chemical synthesis, Mechanical properties and microstructure, Atomic force microscopy (AFM), CORROSION-RESISTANCE, ELECTRODEPOSITION, COATINGS
  • Dokuz Eylül University Affiliated: Yes

Abstract

Ternary zinc-nickel-cobalt alloys were electrodeposited on steel substrates from sulfate bath by direct current. Microstructural and mechanical properties of Zn-Ni-Co ternary alloy coatings were investigated and contrasted with the characteristics of Zn-Ni and Zn-Co alloy coatings. It was found that the obtained Zn-Ni-Co alloy exhibited more preferred surface morphology and mechanical properties as compared to the other alloy coatings electroplated at the same conditions. X-ray diffraction studies showed that the deposits of Zn-Ni-Co alloy coatings consisted of Zn, ZnNi3, and ZnCo13 phases. The structure, surface morphology, and surface topography of the deposited alloys were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) with energy dispersive X-ray microanalysis (EDS), and atomic force microscopy (AFM). In addition, hardness, elasticity modulus, and adhesion strength of coated alloys were measured with dynamic ultra-microhardness (DUH) and Scratch tester.