Fabrication of hydroxyapatite and TiO2 nanorods on microarc-oxidized titanium surface using hydrothermal treatment
✍ Scribed by Ho-Jun Song; Ji-Woo Kim; Min-Suk Kook; Won-Jin Moon; Yeong-Joon Park
- Publisher
- Elsevier Science
- Year
- 2010
- Tongue
- English
- Weight
- 762 KB
- Volume
- 256
- Category
- Article
- ISSN
- 0169-4332
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✦ Synopsis
AC-type microarc oxidation (MAO) and hydrothermal treatment techniques were used to enhance the bioactivity of commercially pure titanium (CP-Ti). The porous TiO 2 layer fabricated by the MAO treatment had a dominant anatase structure and contained Ca and P ions. The MAO-treated specimens were treated hydrothermally to form HAp crystallites on the titanium oxide layer in an alkaline aqueous solution (OH-solution) or phosphorous-containing alkaline solution (POH-solution). A small number of microsized hydroxyapatite (HAp) crystallites and a thin layer composed of nano-sized HAps were formed on the Ti-MAO-OH group treated hydrothermally in an OH-solution, whereas a large number of microsized HAp crystallites and dense anatase TiO 2 nanorods were formed on the Ti-MAO-POH group treated hydrothermally in a POH-solution. The layer of bone-like apatite that formed on the surface of the POHtreated sample after soaking in a modified simulated body fluid was thicker than that on the OH-treated samples.