M. U. Manzoor
University of the Punjab, Pakistan
Title: Effect of anionic surfactant on the performance of nickel electroplating watts bath
Biography
Biography: M. U. Manzoor
Abstract
Surfactants are an important component in watts bath. In the current study we examined the effect of surfactant in watt bath for nickel electroplating. Dodecyl sulphate salt, an anionic surfactant as wetting agent in the nickel electroplating bath was used to retard the pitting action because of its amphiphilic characteristics. 240gL-1 boric acid and 30gL-1 nickel chloride with different concentration of 5, 15, 30gL-1 at constant temperature was used. Sodium dodecyl sulphate was added into the nickel bath with varying concentration of 0 to 5gL-1. The current density for an hour is 2.5 Adm-2 and Ee is 66oC. To study the thickness of electroplating, optical microscopic method was employed. The quantitative measurement of the adhesion of the nickel plating with the substrate was measured by the heat quench test method following ASTM B571. On different composition of nickel electroplated samples, salt spray test was also performed with 5% NaCl solution of 35oC temperature. Electrochemical corrosion testing was performed for 50gL-1 NaCl solution with a pH of 3.2. The results depict that if the anionic surfactant is increased, the pitting on the substrate is rendered which produces a smooth surface on the electroplated specimen hence it can be concluded that the performance of the nickel electroplating bath is improved by sodium dodecyl sulphate