【摘要】 为了提高钛组件的抗菌能力,通过微弧氧化（MAO）处理和进一步的氮等离子体浸没离子注入（N-PIII）处理,在钛表面制备抗菌涂层。XPS光谱测试结果表明,采用氮离子注入N-PIII法将氮掺入TiO₂涂层,随着注入时间的增加,TiO₂涂层表面氮含量增加。掺氮样品在可见光区域的吸光度显著增加,并且氮注入样品的光吸收峰边缘与微弧氧化样品的光吸收峰相比向红外光区移动。将大肠杆菌和金黄色葡萄球菌接种在样品表面,以评估样品的抗菌能力。细菌实验结果表明,掺氮态TiO₂在可见光下可以有效降低细菌活力。由实验结果可见,微弧氧化和氮离子注入复合工艺制备的抗菌TiO₂涂层在医学和海洋领域具有很大潜力。更多还原

【Abstract】 In order to enhance the antibacterial ability of titanium components, an antibacterial coating was fabricated on Ti surface by micro-arc oxidation（MAO） and further nitrogen plasma immersion ion implantation（N-PIII）. The XPS spectra demonstrated that nitrogen was incorporated into TiO₂ coatings by N-PIII and the nitrogen content on the surface of TiO₂ coatings increased as the N-PIII time increased. Nitrogen-incorporated samples exhibited remarkably increased absorbance in the visible region and the light absorption edge of nitrogen-incorporated samples showed a redshift compared to MAO samples. Escherichia coli and Staphylococcus aureus were seeded on the samples to assess their antibacterial ability. The bacterial experiment demonstrated that nitrogen-incorporated TiO₂ could effectively reduce the bacterial viability in visible light. Thus, the antibacterial TiO₂ coatings fabricated by MAO and further N-PIII might have large potential in the medical and marine fields.更多还原