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| Mg-2.4Nd-0.5Sr-0.3Zr生物镁合金表面耐蚀抑菌层的制备与表征 |
| Preparation and characterization of anti-bacterial and corrosion-resistant film on Mg-2.4Nd-0.5Sr-0.3Zr bio-magnesium alloy |
| 投稿时间：2018-12-05 |
| DOI： |
| 中文关键词: 生物镁合金 水热处理 膜层 Mg(OH)2 耐蚀性 抗菌性 |
| 英文关键词: bio-magnesium alloy hydrothermal method film Mg(OH)2 corrosion resistance antibacterial property |
| 基金项目:国家自然科学基金资助项目(51771139)；国家级大学生创新创业训练计划项目(18ZRA008). |
| 作者 | 单位 | E-mail | | 毛雨旭 | 武汉科技大学省部共建耐火材料与冶金国家重点实验室,湖北 武汉,430081
武汉科技大学材料与冶金学院,湖北 武汉,430081 | 526818427@qq.com | | 宋述鹏 | 武汉科技大学省部共建耐火材料与冶金国家重点实验室,湖北 武汉,430081
武汉科技大学材料与冶金学院,湖北 武汉,430081 | | | 许娜 | 武汉科技大学生命科学与健康学院,湖北 武汉,430065 | | | 周和荣 | 武汉科技大学材料与冶金学院,湖北 武汉,430081 | | | 吴润 | 武汉科技大学材料与冶金学院,湖北 武汉,430081 | | | 熊少聪 | 武汉科技大学材料与冶金学院,湖北 武汉,430081 | |
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| 中文摘要: |
| 以AgNO3溶液为介质,采用水热法在Mg-2.4Nd-0.5Sr-0.3Zr生物镁合金表面制备具有抗菌性能的耐蚀膜层,通过XRD、SEM、EDS等技术,对不同水热温度及时间条件下所制膜层的形貌及物相结构进行表征,结合电化学测试及抑菌试验,考察了水热条件对膜层耐蚀性和抗菌性能的影响。结果表明,Mg-2.4Nd-0.5Sr-0.3Zr合金表面膜层主要由层片状Mg(OH)2和颗粒状Ag/Mg(OH)2聚集混合组成,随着水热温度的升高及反应时间的延长,膜层厚度逐渐增加。电化学测试结果显示,膜层能有效改善合金的耐蚀性,且随着表面膜层厚度的增加,对应合金样品的耐蚀性增强。此外,经过水热处理制得的合金样品在金色葡萄球菌培养24 h后,产生了明显的抑菌圈,表现出了良好的抗菌效果。 |
| 英文摘要: |
| With AgNO3 solution as medium, the corrosion-resistant film with anti-bacterial properties was fabricated on the surface of Mg-2.4Nd-0.5Sr-0.3Zr bio-magnesium alloy by hydrothermal method. The morphology and phase composition of the films prepared by different hydrothermal temperatures and times were characterized by XRD, SEM and EDS. With further electrochemical and anti-bacterial tests, the effects of hydrothermal condition on the corrosion resistance and anti-bacterial properties of the as-prepared samples were investigated. The results show that the synthesized films mainly consist of lamellar Mg(OH)2 and aggregate granular Ag/Mg(OH)2, and the film thickness increases with the rising of hydrothermal temperature and the elongation of holding time. Moreover, the electrochemical analysis indicates that the as-deposited film can effectively improve the corrosion resistance of the substrate alloy; with the increase of film thickness, the corrosion resistance of the as-prepared sample is enhanced correspondingly. In addition, obvious inhibition zones against Staphylococcus aureus are observed on the surface of samples after aerobic culture for 24 h, which indicates that the synthesized film on the magnesium alloy exhibits good anti-bacterial performance. |
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