Anatase coating on NiTi via a low-temperature sol-gel route for improving corrosion resistance

摘要

NiTi was dip-coated with TiO2 using Ti(OC5H 9)4 as precursor. Subsequent hydrothermal treatment of the sample at 200°C resulted in a film composed of nanosized anatase particles. EIS and polarization studies indicated a significantly larger increase in corrosion resistance compared with the coated samples dry-heated at 500°C.