| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1636919 | Transactions of Nonferrous Metals Society of China | 2015 | 6 Pages |
Ti6Al4V alloy was subjected to hydrothermal treatment in the concentrated Ca3(PO4)2, CaHPO4 and Ca(H2PO4)2 solutions for bioactive surface modification. The treated samples are covered by films composed of nano-particles with the size of 60–240 nm. Such film can also be grown on the strut surface of a Ti6Al4V scaffold prepared by electron beam melting (EBM) technology. XPS analysis indicates that Ti element on the surface presents as TiO2, and Ca and P elements are in the form of calcium phosphate. XRD and Raman analyses show that the surface layer is composed of anatase TiO2 and hydroxyapatite. Potentiodynamic polarization test in a Ca-free Hank's balanced solution demonstrates that the treated sample has markedly improved corrosion resistance compared with the polished sample. The present work provides a bioactive surface modification method that is easily-operated, low-temperature, less corrosion, and applicable to porous Ti6Al4V alloy for biomedical applications.
