ЭЛЕКТРООСАЖДЕНИЕ НАНОКРИСТАЛЛИЧЕСКИХ Сo-W ПОКРЫТИЙ ИЗ ЦИТРАТНЫХ ЭЛЕКТРОЛИТОВ В КОНТРОЛИ- РУЕМЫХ ГИДРОДИНАМИЧЕСКИХ УСЛОВИЯХ. 1. ЭЛЕКТРООСАЖДЕНИЕ Сo

Аннотация

Results of complex research of cobalt electrodeposition from citrate electrolyte at definite hydrody- namic conditions with use of a rotating cylinder electrode (RCE) is presented. Influence electrolyte pH change on the state of cobalt in a solution, rate of electrodeposition and surface morphology is shown. It is detected oscillatory process at the potentials close to stationary, and its mechanism is offered. It is shown, that influence of hydrodynamic conditions (increasing of current density of electrodeposition with increasing of RCE rotation speed) is observed only at Re ≥ 200 and takes place at achievement of certain thickness of the electrobesieged layer. Existence of linear dependence between current density and potential of electrode- position allows to assume possibility of formation of a film during the initial moment of sedimentation.

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