Ignatova K.2024-07-162024-07-162024-07-162024-07-162020-01-011314-79781314-7471SCOPUS_ID:85096670301https://rlib.uctm.edu/handle/123456789/1290The effect of the content of the main components (Co and Ni) and pH on the formation rate, the chemical com-position and the morphology of Ni-Co powders obtained in amino-sulfate, amino-chloride and chloride electrolytes is determined. The powder formation in an ammonium-sulfate electrolyte is performed with a low speed and hence a low current efficiency. It is strongly suppressed in a chloride solution by the increase of pH, Co and especially Ni content of the electrolyte. The decrease of pH from 9.1 to 1.4 increases the Ni content from 45.3 wt.% to 61.4 wt.% forming powders of a smaller average particle size (up to 10 µm) with a trend for agglomeration. The Ni-Co powders obtained have polycrystalline structures with presence of f.c.c. phases of ß-Ni and ß-Co and additional h.c.p phase of a-Co, when the cobalt content is greater than 50 wt.%.enArticle