Formation and properties of PEO-coatings containing molybdenum carbides
The chemical composition, morphology, and tribological properties of the PEO-coatings formed using the polarizing signals with different duty cycles (D), on D16 aluminum alloy in tartrate-containing electrolyte were investigated. It has been established that a change in the duty cycle of the polarizing signal affects the chemical composition, as well as the thickness of the formed oxide coatings. Increasing the duty cycle of the polarizing signal leads to a decrease in apparent porosity of the formed PEO-layers and the formation in coatings composition of larger amounts of aluminum and molybdenum carbides, which increases abrasion resistance of PEO-coatings.