Abstract
Based on the study of current-voltage dependencies during electroreduction of molybdenum ions from sulfate electrolytes on Pt electrode, the conditions of deposition of Mo-nanocoatings were established. The influence of various factors such as temperature, content of components in the electrolyte, current density, acidity of solutions, etc., on the composition and quality of coatings was studied. It was found that, with an increase in the concentration of molybdenum and current density, the molybdenum content increases and the quality of coatings improves. Based on the determination of the nature of the cathodic polarization, it was found that the process of electrodeposition of molybdenum from sulfate electrolyte is mainly accompanied by chemical polarization. According to the experimental data, the following electrolyte composition (mol/l) is recommended for obtaining molybdenum nanocoatings: 2.0·10-2– 1.5·10-3 Na2MoО4 +2.0 H2SO4; pH=0.4; EV=0,005 Vs-1; t=750C, electrod – Pt
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