Development and characterization of Ni TiO2 nanocomposite coatings by pulsed electrodeposition

Abstract

Every single factory-made artifact necessitates a good life in terms of working and performance. In the automotive or aerospace sector, coating of the product plays an indispensable role in extending the life of the product. The coating of the product forms a protective surface and minimizes the wear and provides decorative appearance. Electroplating is one of the most real surfaces coating technology used widely in industries. This technique aids to produce abrasion and corrosion resistant coatings. Electrodeposition of nano-sized particles with ceramic composite is a newlinenovel technology adopted in coating. The coatings made with Ni-TiO2 provide higher hardness, higher corrosion resistance and lesser friction, wear for the coated products. It also provides improved results when compared with the products which are coated with conventional pure metallic coatings. It is a better alternative when compared with other coatings, particularlychromium coatings. However, there is no research work reporting coating of components with Ni- TiO2 nano composites found in the literature arena. Hence there is a research gap in investigating the merits of coating the products with Ni-TiO2 nano composites to enhance the pulse parameters. In order to fulfill this theoretical and practical gap, the doctoral work reported in this thesis was carried out. In the research reported in this thesis, Pulsed electroplating in a Watt s bath of Ni- TiO2, nanocomposites was carried out on EN8 Steel and A2 grade of Tool Steel. newline newline