Project(xjj2011096)supported by the Fundamental Research Fund for the Central Universities,China;Project(201107)supported by the Open Project Program of State Key Laboratory of Metastable Materials Science and Technology,China;Project(50901058)supported by the National Natural Science Foundation of China
Titania films with nano-sized pores were prepared on the NaOH?HCl pretreated NiTi alloy substrate by sol?gel method.A crack-free film is obtained for the sample with a dense inner layer and a porous outside layer(s...