Surface nanostructure, biological performance, and mechanical properties of anodized titanium based on water treatment
(0) INTRODUCTION Titanium is frequently used for orthopedic and dental implants for its good mechanical properties, chemical stability and biocompatibility 1. Its chemical stability and biocompatibility are closely related to the natural TiO2 layer, approximately 3-5 nm, formed on the titanium surface 2. In order to further thicken and stabilize the surface TiO2 layer, an electrochemical treatment known as anodic spark deposition (ASD) or micro-arc oxidation (MAO) has been usually applied to titanium implants 3. Surface anodic oxide layer obtained by this process exhibits excellent chemical and mechanical properties as well as a controlled porosity in the micro scale. However, the bioactivity of such anodic layer is still low due to its amorphous or poorly crystallized structure 4. Therefore, a subsequent heat treatment or hydrothermal treatment is required to modify its crystal structure and provide it with the desired apatite-forming ability. In addition, recent studies have shown that implants with a nanostructured surface mimic the nanofeatures of natural bone tissue and provide a biologically inspiring topography for protein and bone cell interactions. Therefore, subsequent surface treatment is also required to impart nanometer surface features to anodic layers, since anodic layers produced by ASD usually exhibit micron-scale surface topography with few nanometer features 5.
Titanium Anodic spark deposition Water treatment Nanostructure Cell response
Zhao-Xiang Chen Wen-Xue Wang Yoshihiro Takao Terutake Matsubara
Research Institute for Applied Mechanics, Kyushu University, Kasuga-koen 6-1,Kasuga, Fukuoka 816-858 Research Institute for Applied Mechanics, Kyushu University, Kasuga-koen 6-1, Kasuga, Fukuoka 816-85 Research Institute for Applied Mechanics, Kyushu University, Kasuga-koen 6-1,Kasuga,Fukuoka 816-8580
国际会议
The 2nd International Conference on Nanomechanics & Nanocomposites(第二届国际纳米力学与纳米复合材料会议)
北京
英文
143-146
2010-10-10（万方平台首次上网日期，不代表论文的发表时间）