A Hull cell study of a Ni W electrolyte and evaluation of its properties

Interest in Ni W coatings has grown in recent years due to its favourable properties such as hardness, and resistance to both wear and corrosion, making it one of the actual alternatives to hard chromium coatings. In this work, we have undertaken a Hull cell study, investigating the influence of the metal concentration, temperature, pH and current density on the composition of the alloy formed and its thickness. We have also studied the most important properties of the Ni W deposits, including morphology, hardness, and resistance to abrasion and corrosion. (Author) 9 refs