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Effect of Ca2+ additives on morphology, composition and corrosion resistant of Zn-12%Ni phosphate coating

Alizadeh, H ; Sharif University of Technology

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  1. Type of Document: Article
  2. DOI: 10.1016/j.jmrt.2016.03.003
  3. Publisher: Elsevier Editora Ltd
  4. Abstract:
  5. The aim of this study is to investigate the effect of phosphate solution with Ca2+ additives on weight, surface morphology and electrochemical behavior of phosphated Zn-Ni film. In order to characterize structure and morphology of surface, X-ray diffraction (XRD) and scanning electron microscopy (SEM) were applied, respectively. Results showed that the main composition in produced coatings was hopeite Zn3(PO4)2·4H2O, which has high corrosion resistance. On one hand, in the presence of Ca2+ cations in solution, the weight of phosphate coating decreased, but on the other hand surface uniformity and corrosion resistance of the coating increased
  6. Keywords:
  7. Ca2+ ; Phosphate coating ; Corrosion ; Corrosion resistance ; Morphology ; Nickel ; Scanning electron microscopy ; X- ray diffraction ; Zinc ; Corrosion-resistant ; Electrochemical behaviors ; Hopeite ; Ni films ; Phosphate solutions ; Structure and morphology ; Surface uniformity ; Zn-Ni alloy ; Surface resistance
  8. Source: Journal of Materials Research and Technology ; Volume 5, Issue 4 , 2016 , Pages 327-332 ; 22387854 (ISSN)
  9. URL: http://www.sciencedirect.com/science/article/pii/S2238785416300114