Abstract:This study explored the feasibility of preparing Ti50Cu28Ni15Sn7bulkmetallicglasscomposite with powder metallurgy. With high energy ball milling of a pure Ti, Cu, Ni, Sn and carbonnanotube (CNT) powder mixture, the CNT/Ti50Cu28Ni15Sn7metallicglasscomposite powders can be formed with mechanical alloying (MA) after 8 h milling. The bulkmetallicglasscomposite was successfully prepared by vacuum hot pressing the as-milled CNT/Ti50Cu28Ni15Sn7metallicglasscomposite powders. The corrosionbehavior of the Ti50Cu28Ni15Sn7bulkmetallicglass as well as composites modified by the addition of CNT was investigated by electrochemical measurements. Electrochemical characterization was performed in Hanks’ solution at 37 °C with physiologically relevant dissolved oxygen content. The results of potentiodynamic polarization measurements revealed that the Ti-basedbulkmetallicglasscomposites examined showed spontaneous passivity by anodic polarization with a passive current density of about 10−5 A/cm2. The higher corrosion resistance of the Ti-basedbulkmetallicglasscomposites was attributed to stable and protective passive films enriched with titanium containing certain amounts of additional elements.