Effect of Pulse Parameters on Corrosion and Morphological Behavior of Zn-TiO2 Nanocomposites Produced by Electrochemical Deposition

Zn-TiO2 nanocomposite coatings were prepared from a sulfate bath solution by pulse electrochemical deposition. In this method, frequency and duty cycle parameters were investigated. Morphological and corrosion properties of these coatings were investigated by FE-SEM and potentiodynamic polarization in 1M NaCl solution. In case of frequency it was observed that by increasing its value from 10 to 100 Hz, the amount of codeposited nanoparticles increases in the coatings. Moreover, by increasing duty cycle from 10 to 75%, a maximum value of codeposited particles observed at 50%. These changes are function of T on and Toff in pulse current.