Production of Al–Mn/WC Composite Coatings with Electrodeposition in AlCl3–NaCl–KCl–MnCl2 Molten Salts

The hardness and wear resistance of amorphous Al–Mn alloy coatings can be improved by incorporating ceramic particles into them to extend their application. In this paper, Al–Mn/WC composite have been prepared with electrodeposition in stirred AlCl3–NaCl–KCl–MnCl2 molten salts at 180 °C the addition WC particles. effects stirring speed (400–700 rpm) cathode current density (15–75 mA/cm2) on produced studied. At 600 rpm 700 rpm, exhibited best uniform distribution embedded particles, tested microhardness value up 650 HV0.1, compared 530 HV0.1 alloy. Moreover, under various densities, quality coating was obtained 55 mA/cm2, a homogeneous highest (670 HV0.1). It is expected that method could extended applied for preparation aluminum-based magnesium-based coatings.