Corrosion Resistance of ZnNi / Nanosilica Alloy Coating on Carbon Steel

In this paper, study on the electrodeposition of ZnNi/nanosilica alloy coating on carbon steel and influence of 5g/L nanosilica in the plating bath on some properties such as morphology, structure characteristics and corrosion resistance of the ZnNi/nanosilica coating were conducted. The results revealed that ZnNi/nanosilica composite coating contained 16.37 % Ni and 0.32 % Si. Only the phase γNi5Zn21 were observed in the ZnNi/nanosilica alloy coatings. The thickness of the ZnNi/nanosilica coating was 16.56 μm. The corrosion resistance on the ZnNi/nanosilica coating was evaluated by time for red rust appearing in salt fog test as 900 hours. © 2019 Elixir All rights reserved. Elixir Corrosion & Dye 134 (2019) 53588-53592 Corrosion and Dye Available online at www.elixirpublishers.com (Elixir International Journal) Nguyen Thi Thanh Huong et al./ Elixir Corrosion & Dye 134 (2019) 53588-53592 53589 Figure 1. The dispersion of nanosilica particles in water (1); in ZnNi/nanosilica plating solution (2); Zn-Ni plating solution without nanosilica (3). Figure 2. Distribution of nanosilica particles in ZnNi/nanosilica plating solution. Table 1. Distribution of nanosilica particles in ZnNi/nanosilica plating solution. The particle size (nm) Percentage of the particle size (%)