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    STUDIA CHEMIA - Issue no. 1 / 2013  
         
  Article:   CORROSION BEHAVIOUR OF COMPOSITE COATINGS OBTAINED BY ELECTROLYTIC CODEPOSITION OF ZINC WITH NANOPARTICLES OF CeO2 •ZrO2 BINARY OXIDES.

Authors:  LIANA MARIA MUREȘAN. 		 
       
         
  Abstract:  Composite Zn coatings incorporating CeO2 •ZrO2 nanoparticles were obtained by electrodeposition on steel from an industrial electrolyte, containing 75 g L−1 ZnCl2 , 230 g L−1 KCl, 20 g L−1 H3 BO3 and two additives, 1 mL L−1 each.
The influence of the oxide nanoparticles on phase composition, morphology and structure of the obtained coatings was investigated by X−ray diffraction and SEM−EDX methods. By using polarization measurements, the corrosion behaviour of the deposits was examined and the corrosion process on Zn−CeO2 •ZrO2 composite coatings was compared with that taking place on composite coatings prepared with a simple mixture of CeO2 and ZrO2 oxides and with each oxide separately. On all the composite coatings, corrosion was found to be slower than on the pure Zn surface.

Keywords: Corrosion; Electrodeposition; Zinc−nanoparticles composite coatings; CeO2 •ZrO2 binary oxides 		 
         
     
         
         
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