Abstract
Ni–Zn–TiO2 nanocomposite coating was fabricated using the electrodeposition process with the aid of ultrasonic vibration (0, 108, 135, 162 and 216Wcm−2 ultrasonic power densities) on mild steel disks. The properties of the nanocomposite film were investigated using scanning electron microscopy (SEM), energy dispersive X-ray (EDX), EDX-mapping, Vickers microhardness test, Tafel polarization test and electrochemical impedance spectroscopy (EIS). The results revealed a significant improvement of anticorrosive properties and hardness of the nanocomposite coatings compared to Ni–Zn alloy coating. Ecorr became more positive and changed from −0.921V for Ni–Zn alloy coating to −0.789V for Ni–Zn–TiO2 nanocomposite coating. Icorr decreased from 1.25×10−5Acm−2 for Ni–Zn alloy coating to 3.46×10−6Acm−2 for Ni–Zn–TiO2 nanocomposite coating. On the other hand, hardness increased from 253HV for Ni–Zn alloy coating to 876HV for Ni–Zn–TiO2 nanocomposite coating. The improvements were related not just to the content of nano-TiO2 in the coatings but also to surface homogeneity and nanoparticles uniform dispersion in the matrix of the coating.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
