Formation of an Anti-Bacterial Oxide Film on Ti-Ta Alloy by Anodic Oxidation

Recently, Ti-Ta alloys have been expected to be as candidates for dental or orthopedic implants because of their low elastic modulus and high corrosion resistance. However, Ti-Ta alloys do not have the properties to protect against bacterial infection. An anti-bacterial coating was fabricated on the...

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Bibliographic Details
Published in:ECS transactions 2014-04, Vol.58 (38), p.1-8
Main Authors: Lin, Hao-Jan, Ou, Shih-Fu, Huang, Ta-Sen, Fan, Fang-Yu, Ou, Keng-Liang, Lin, Li-Hsiang
Format: Article
Language:English
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Summary:Recently, Ti-Ta alloys have been expected to be as candidates for dental or orthopedic implants because of their low elastic modulus and high corrosion resistance. However, Ti-Ta alloys do not have the properties to protect against bacterial infection. An anti-bacterial coating was fabricated on the Ti-Ta alloy surface by anodic oxidation (AO) and its surface properties were investigated. The anodic oxidized (AOed) film exhibited a roughened surface dotted with micropores. In addition, the AOed surface is more hydrophilic than the Ti-Ta alloy. The results of an anti-bacterial test revealed that the AOed surface possessed excellent anti-bacterial rate against Staphylococcus aureus (98.5%).
ISSN:1938-5862
1938-6737
DOI:10.1149/05838.0001ecst