碳离子注入AZ31B镁合金的耐腐蚀性和生物相容性
Corrosion resistance and biocompatibility of carbon ion implanted AZ31B magnesium alloy.
作者信息
Zheng Chengdong, Lin Bingpeng, Li Tong, Wang Shuang, Hou Yuxia, Zhang Zhiyong, Yang Fan, Cao Baocheng
机构信息
Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, 713599, Shanxi, China.
Clinical Research Center of Shaanxi Province for Dental and Maxillofacial Diseases, College of Stomatology, Xi'an Jiaotong University, Xi'an, 713599, Shanxi, China.
出版信息
Sci Rep. 2024 Oct 25;14(1):25356. doi: 10.1038/s41598-024-77543-y.
The poor corrosion resistance of magnesium limits its clinical applications. Accordingly, in the present study, carbon ions were incorporated into a AZ31b magnesium alloy surface via carbon plasma immersion ion-implantation to improve its corrosion resistance and biocompatibility. The surface morphology and properties of the modified alloy were evaluated by field-emission scanning electron microscopy, water contact angle measurement, Raman scattering, X-ray photoelectron spectroscopy, and energy dispersive X-ray spectroscopy. Furthermore, compositional depth profiles were obtained by glow discharge optical emission spectroscopy, revealing a Gaussian-like distribution of carbon concentration. Electrochemical and hydrogen-evolution analysis demonstrated the successfully improved corrosion resistance of the AZ31b Mg alloy, while its biocompatibility was demonstrated by MTT and cell-adherence assays.
镁的耐腐蚀性较差，限制了其临床应用。因此，在本研究中，通过碳等离子体浸没离子注入将碳离子引入AZ31b镁合金表面，以提高其耐腐蚀性和生物相容性。通过场发射扫描电子显微镜、水接触角测量、拉曼散射、X射线光电子能谱和能量色散X射线能谱对改性合金的表面形貌和性能进行了评估。此外，通过辉光放电光发射光谱获得了成分深度分布，揭示了碳浓度呈高斯分布。电化学和析氢分析表明AZ31b镁合金的耐腐蚀性得到了成功改善，而MTT和细胞黏附试验证明了其生物相容性。
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