Corrosion and wear properties of laser surface modified NiTi with Mo and ZrO2

This paper reports the corrosion and wear properties of laser surface modified NiTi using Mo and ZrO2 as surface alloying elements, respectively. The modified layers which are free from microcracks and porosity, act as both physical barrier to nickel release and enhance the bulk properties, such as hardness, wear resistance, and corrosion resistance. The electrochemical performance of the surface modified alloy was studied in Hanks' solution. Electrochemical impedance spectroscopy was measured.