Morphology and barrier properties of MoC-containing plasma electrolytic layers on aluminum alloy

摘要

The results of the study aimed at assessing the effect of the duty cycle (D) during plasma electrolytic oxidation (PEO) on morphology, chemical composition, and barrier properties of the coatings produced on 5754 aluminum alloy are presented. It is shown that increasing the duty cycle of a microsecond current pulses leads to increased thickness and decreased porosity along with improved electrochemical parameters.