Abstract
The effects of complexing ligands -ethylenediaminetetraacetic acid disodium salt (EDTA), nitrilotriacetic acid trisodium salt (NTA) and their mixtures on the composition and morphology of Mn-Ni and Mn-Cu-Ni alloys obtained by electrodeposition were studied. It found that high values of stability constants of conventionally electropositive potential of the nickel ion complexes are not sufficient for obtaining of high-quality manganese-containing alloy coatings by electro-deposition; it is important for complex-containing solution to contain concentrations of metal ions with a definite ratio and additives of definite ligands or ligand mixtures. The formation of hydroxyl ions as a result of concurrent reaction – water reduction occurring in parallel with metals co-deposition has a significant impact on co-deposition processes of metals and on parameters of electro-deposition process.