| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5365104 | Applied Surface Science | 2008 | 4 Pages |
Abstract
TiO2 films were formed on an NiTi alloy surface by heat treatment in air at 600 °C. Heat treated NiTi shape memory alloys were subsequently alkali treated with 1 M, 3 M and 5 M NaOH solutions respectively, to improve their bioactivity. Then treated NiTi samples were soaked in 1.5SBF to evaluate their in vitro performance. The results showed that the 3 M NaOH treatment is the most appropriate method. A large amount of apatite formed within 1 day's soaking in 1.5SBF, after 7 day's soaking TiO2/HA composite layer formed on the NiTi surface. SEM, XRD, FT-IR and TEM results showed that the morphology and microstructure are similar to the human bone apatite.
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Authors
Wei Qiang, Cui Zhen-duo, Yang Xian-jin, Shi Jie,