Protective coatings were fabricated on the surface of SiCp/AZ91 Mg alloy matrix composite by micro-arc oxidation(MAO)surface treatment technique.Micro-arc oxidation behaviors of the composite were compared with AZ91 Mg alloy.The corrosion resistance enhancement of the composite after MAO treatment was also evaluated by electrochemi- cal method.The results show that the micro-arc oxidation behaviors of the composite are different from those of the alloy because the presence of SiC particle has influenced the...