Improvement of the microstructure and corrosion behavior of Ni-TiO2 composite coatings electrodeposited at various amounts of TiO2 powder

The purpose of this study was to produce efficient Ni-TiO2 composite coatings at different concentrations of TiO2 particles to enhance BS2 microstructure and corrosion resistance in 3.5 wt. % NaCl. % NaCl solution. EDS analysis shows that the Ti and O content increases by increasing the amount of TiO2. XRD results reveal that the preferential growth plane of pure Ni is (100), which corresponds to the (111) and (100) planes for Ni-TiO2 composite coatings. SEM shows that the substrates are coated homogeneously. In addition to the microstructural improvements, the corrosion resistance efficiency was enhanced significantly with the inclusion of TiO2 particles. Specifically, the study showed that 10 g/L of TiO2 provided the optimal balance, achieving a corrosion resistance efficiency of 74.6%, along with a marked reduction in porosity. Furthermore, the surface morphology confirmed a uniform and defect-free distribution of the TiO2 particles, contributing to the overall anti-corrosion properties. These findings suggest that Ni-TiO2 composite coatings are a promising candidate for industrial applications, particularly in environments where materials are exposed to harsh conditions, such as marine environments. The outcomes of this research have the potential to inform the development of advanced anti-corrosion strategies for various industries.