Enhancement of antibacterial property of titanium by two-step micro arc oxidation treatment
Enhancement of antibacterial property of titanium by two-step micro arc oxidation treatment
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DOI：
10.4012/dmj.2020-188
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发表时间：
2021-06-01
影响因子：
2.5
通讯作者：
Hanawa, Takao
中科院分区：
文献类型：
--
作者：
Shimabukuro, Masaya;Tsutsumi, Harumi;Hanawa, Takao
为了在钛合金表面获得理想的抗菌性能，开发了一种定制的微弧氧化（MAO）处理技术。采用两步微弧氧化工艺制备了表面氧化层中同时含有Ag和Zn的试样。进行表面分析和金属离子释放测试，以评估银和锌的存在和离子释放行为模拟实际使用，分别。此外，还使用革兰氏阴性兼性厌氧菌评价了样品的抗菌性能。含有Ag和Zn的MAO处理的样品对大肠杆菌表现出优异的抗菌性能，并且即使在模拟生活环境的生理盐水中浸泡28天后，该性能仍持续存在。
A customized micro arc oxidation (MAO) treatment technique was developed to obtain desirable antibacterial properties on titanium surfaces. The two-step MAO treatment was applied to fabricate a specimen containing both Ag and Zn in its surface oxide layer. Surface analyses and metal-ion release tests were performed to evaluate the presence of Ag and Zn and the ion release behavior for simulating practical usage, respectively. Additionally, the antibacterial properties of the specimens were also evaluated using gram-negative facultative anaerobic bacteria. The MAO-treated specimens containing both Ag and Zn showed excellent antibacterial properties against Escherichia coli, and the properties were sustained even after 28 days of immersion in physiological saline to simulate the living environment.