Low-Voltage Polarization in AOT Solution to Enhance the Corrosion Resistance of Nitinol

Abstract In this work, the corrosion behavior of bare nitinol (NiTi) alloy in Ringer's solution containing different concentrations sodium bis(2-ethylhexyl) sulfosuccinate (AOT) was first studied order to determine whether surfactant acts as a inhibitor. Results potentiostatic and potentiodynamic experiments allowed concluding that AOT is pitting inhibitor for NiTi. second stage research NiTi treated under control (2.00 V) 1 h 0.10 M solutions pH 8.4 12. Static rotating electrodes were used. The influence exerted by treatment on passive using electrochemical surface analysis techniques. best anticorrosion performance obtained electrode 8.4. thin oxide layer grown potentiostatically consists TiO 2 , while no Ni found outermost layer. presence allows reducing amount Ti released at open circuit potential conditions very positive potentials where occurs.