The electrochemical corrosion behavior of the non-precious Ni-Cr Wirolloy, being used in dentistry, was investigated before and after applying of two types of eco-friendly coatings, polyvinyl silsesquioxane (PVS) and nano-hydroxyapatite (nHAP) separately in artificial saliva solution at 37°C for 14 d of immersion. The study aimed to investigate the effectiveness of the introduced coating films in enhancing the corrosion resistance of the alloy, and in decreasing the leaching of the toxic Ni ions from the alloy into the environment. The electrochemical corrosion investigation methods used are; open circuit potential (OCP), electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization techniques. The evaluated results revealed that the electrochemically coated alloy with PVS. prepared at