| Abstrakt: |
Nickel-molybdenum alloys are of interest due to their functional properties, such as high hardness, corrosion resistance, as well as low wear and friction coefficients. Thus, they provide an excellent alternative to hard chromium coatings obtained from toxic electrolytes. Characterized coatings were electrodeposited on the steel substrates, from an aqueous citrate complex solution, containing nickel and molybdenum salts, in a system with a rotating disk electrode (RDE). The effect of cathodic current density on microstructure, chemical and phase composition, and crystallite size of the coatings was determined by the scanning and transmission electron microscopy, energy-dispersive X-ray spectrometry, and X-ray diffraction. The influence of microstructure as well as chemical composition on functional properties of coatings were also determined. |
