Abstract
A composite coating was produced using e-beam formation of surface alloy followed by micro-arc oxidation technique. The Al-Steel surface alloy was formed directly on steel substrate in vacuum by alternating processes of Al thin film deposition followed by a pulsed electron-beam mixing of deposited film and a top layer of the substrate with further formation of the MAO coating from the surface alloy. The microstructure of the coatings including surface morphology, phase and element composition was studied by scanning electron microscopy (SEM) and X-ray diffraction (XRD), respectively. The final ceramic coatings have a typical morphology for MAO coatings and consist of Al2O3 and some amorphous Al2O3 phases.
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