Effect of cerium addition on properties of electroless nickel-phosphorus coatings

摘要

Purpose - The purpose of this paper is to report the effect of cerium addition on plating rate, microstructure and electrochemical behaviour of electroless nickel-phosphorus coatings. Design/methodology/approach - The methodology comprised preparation of coatings with different concentration of cerium added in plating bath by electroless, then test coating properties by SEM, XRD and electrochemical workstation. Findings - Coatings prepared with 10 mg/L cerium added in electroless bath have the best corrosion resistance and high deposition rate, smooth and mirror-like micrograph. Originality/value - The nickel-phosphorus coating has obtained best corrosion resistance performance (i_(corr) = 1.35μA cm~(-2)) when cerium addition concentration is 10 mg L~(-1).