Ni-P-Acetylacetonate-TiO2 Composite Plating with Electroless Plating: Plating Parameters and Corrosion Resistance

Abstract

In this study, the chemical plating parameters for Ni-P-acetylacetonate-TiO2 composite particles and the corrosion resistances of the deposition layer obtained by electroless plating are investigated. The effects of the TiO2 concentration, process time, temperature, and pH of the plating materials are examined, and optimal parameters are determined. The corrosion resistance of samples obtained by Ni-P-acetylacetonate-TiO2 composite plating is assessed by comparison to a Ni plating layer, and it is found to be superior to that of Ni-P plating layers in a 3.5% NaCl salt spray, as well as in 15% H2SO4 and 20% HCl solutions. The origin of this corrosion resistance in composite plating layers is discussed.