Rezumat
The manufacturing conditions, the structure, the rate of deposition and the microhardness of electrochemical cobalt- molybdenum coatings from citric electrolyte that contain sodium salt of ethylenediaminetetraacetic acid (EDTA) at pH =4 in the range of current density 2 – 10 A/dm2 at room temperature are studied. It is shown, that at the investigated conditions the falling dependence of current efficiency on current density and the increasing of Мо concentration in the coatings are observed with the increasing of current density. Texturized coatings and enhance of molybdenum concentration at a raised current density lead to an enhancement of microhardness of coatings. Correlation between the molybdenum concentration in coatings and its quasi-static and sclerometric microhardness is shown.