Optimization of electroless Ni-P coating bath and its impact in the Industrial Applications

Abstract

Electroless Ni-P coating is widely used in industrial engineering applications due to its ability to alter and improve the surface properties of the steel substrates. Electroless nickel coating introduce an excellent combination of surface properties, where, it could add brightness, luster, and good appeal. The final coating layer also possess a very good adhesion with the coated substrates, this is the reasons for using such layer as an 'undercoat' for other coatings. The ability to produce a very homogenous composition and produce coating with a high corrosion resistance are mainly based on the plating bath composition. The present work investigates the influence of bath compositions, which included nickel sulphate, sodium hypophosphite and trisodium citrate, on the process of electroless Ni-P coating. The deposition rate (Dr) as well as the bath stability were monitored to optimize the plating bath conditions with the different composition. The results of this work showed that 43

Electroless coating technology for 1060 aluminum alloy and the effect of tin chloride and ‎polymer addition

“…Metal industries use it a lot [1]. Electroless Ni-P coatings have become more common due to their good corrosion, abrasion and wear resistance [2][3][4][5]. Several studies have been made to enhance the corrosion characteristics of Ni-P alloy coatings on metal substrates [6][7][8][9].…”