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The electrodeposition of Ag-In alloys from cyanide electrolytes was investigated. The resulting coatings were characterized by cyclic voltammetry, scanning electron microscopy, energy-dispersive X-ray, and X-ray diffraction. The effect of current density on the structure and coating phase composition was established. With increasing current density heterogeneous, more indium-rich alloy coatings were deposited, containing different phases such as Ag, Ag 3 In, In 4 Ag 9 , and AgIn 2 . During electrodeposition in exhausted electrolytes, spatiotemporal structures were observed on the coating surface. A linear relationship between the concentration ratio of both metals in the electrolyte and the current density was found. According to this relation, the formation of spatiotemporal structures during electrodeposition in a fresh electrolyte is possible.

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