Development of electroless Ni-Zn-P/nano-TiO2 composite coatings and their properties

作者：Ranganatha S; Venkatesha T V^*; Vathsala K

来源：Applied Surface Science, 2010, 256(24): 7377-7383.

DOI：10.1016/j.apsusc.2010.05.076

• Electroless Ni-Zn-P-TiO2
• Composites
• Metal matrix
• Coatings
• Corrosion
• Microstructure

Ni-Zn-P-TiO2 composite coatings were successfully obtained on low carbon steel by electroless plating technique. Deposits were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy-dispersive analysis (EDS) studies. The hardness and microstructure of as plated and heat treated Ni-Zn-P and Ni-Zn-P-TiO2 composite coatings were analyzed. The change in microstructure and higher hardness was noticed for heat treated composite. The corrosion resistance behavior of as plated and heat treated Ni-Zn-P and Ni-Zn-P-TiO2 coatings was investigated by anodic polarization, Tafel plots and electrochemical impedance spectroscopic (EIS) studies in 3.5 wt% NaCl solution. The composite coating exhibited enhanced corrosion resistance property over Ni-Zn-P coating.

• 出版日期2010-10-1