中山醫學大學機構典藏 CSMUIR:Item 310902500/15804
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    题名: Improvements in the corrosion resistance and biocompatibility of biomedical Ti–6Al–7Nb alloy using an electrochemical anodization treatment
    作者: Huang, Her-Hsiung
    Wu, Chia-Ping
    Sun, Ying-Sui
    Lee, Tzu-Hsin
    贡献者: 醫學研究所
    关键词: Ti–6Al–7Nb alloy;Anodization;Nanoporous;Corrosion;Biocompatibility
    日期: 2012
    上传时间: 2016-08-15T06:05:03Z (UTC)
    ISSN: 0040-6090
    摘要: The biocompatibility of an implant material is determined by its surface characteristics. This study investigated the application of an electrochemical anodization surface treatment to improve both the corrosion resistance and biocompatibility of Ti–6Al–7Nb alloy for implant applications. The electrochemical anodization treatment produced an Al-free oxide layer with nanoscale porosity on the Ti–6Al–7Nb alloy surface. The surface topography and microstructure of Ti–6Al–7Nb alloy were analyzed. The corrosion resistance was investigated using potentiodynamic polarization curve measurements in simulated blood plasma (SBP). The adhesion and proliferation of human bone marrow mesenchymal stem cells to test specimens were evaluated using various biological analysis techniques. The results showed that the presence of a nanoporous oxide layer on the anodized Ti–6Al–7Nb alloy increased the corrosion resistance (i.e., increased the corrosion potential and decreased both the corrosion rate and the passive current) in SBP compared with the untreated Ti–6Al–7Nb alloy. Changes in the nanotopography also improved the cell adhesion and proliferation on the anodized Ti–6Al–7Nb alloy. We conclude that a fast and simple electrochemical anodization surface treatment improves the corrosion resistance and biocompatibility of Ti–6Al–7Nb alloy for biomedical implant applications.
    URI: http://dx.doi.org/10.1016/j.tsf.2012.08.063
    https://ir.csmu.edu.tw:8080/ir/handle/310902500/15804
    關聯: Thin Solid FilmsVolume 528, 15 January 2013, Pages 157–162
    显示于类别:[口腔醫學研究所] 期刊論文

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