Biocorrosion properties of Ti-3Cu alloy in F ion-containing solution and acidic solution and biocompatibility
Biocorrosion properties of Ti-3Cu alloy in F ion-containing solution and acidic solution and biocompatibility
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DOI：
10.1007/s12598-019-01202-9
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发表时间：
2019-06-01
期刊：
影响因子：
8.8
通讯作者：
Zhang, Er-Lin
中科院分区：
文献类型：
--
作者：
Cai, Dian-Geng;Bao, Mian-Mian;Zhang, Er-Lin
Ti-3Cu合金具有较低的熔点和较强的抗菌性能。aureus和E.因此，作为牙科材料和骨科应用具有潜在的应用。采用电化学技术和浸泡实验研究了Ti-3Cu合金在5种模拟溶液中的腐蚀性能，并与工业纯钛（cp-Ti）进行了对比。电化学测试结果表明，Ti-3Cu合金在所有溶液中的腐蚀电位均比纯钛高，腐蚀电流密度低，耐蚀性高，特别是在pH 6.8+ 0. 2F和pH 3.5的唾液中，表明Ti-3Cu合金的耐蚀性优于纯钛。浸泡实验结果表明，Ti-3Cu在pH为6.8 +0.2F和pH为3.5的唾液溶液中均有Ti离子和Cu离子的释放。电化学数据和浸泡实验结果表明，在含F离子和低pH溶液中，合金的腐蚀速率和金属离子释放速率都很高，表明F离子和低pH对纯Ti和Ti-3Cu合金具有很强的腐蚀性。利用扫描电镜（SEM）观察了腐蚀后的表面形貌，并对腐蚀后的表面粗糙度进行了测试。抗菌Ti-3Cu合金良好的耐腐蚀性能表明其作为长期生物医学应用的巨大潜力。
Ti-3Cu alloy has shown low melting point and strong antibacterial properties against S. aureus and E. coli and thus has potential application as dental materials and orthopedic application. In this paper, the corrosion properties of Ti-3Cu alloy in five kinds of simulated solutions were investigated in comparison with cp-Ti (commercially pure titanium) by electrochemical technology and immersion experiment. Electrochemical results have demonstrated that Ti-3Cu alloy exhibited much nobler corrosion potential, lower corrosion current density and high corrosion resistance than cp-Ti in all solutions, especially in saliva-pH6.8+0.2F and saliva-pH3.5, indicating that Ti-3Cu alloy has much better anticorrosion properties than cp-Ti. Immersion results have shown that Ti ion and Cu ion were released from Ti-3Cu, especially in saliva-pH6.8+0.2F and saliva-pH3.5 solutions. Both electrochemical data and immersion results have indicated that high corrosion rate and high metal ion release rate were detected in F ion-containing solution and low-pH solution, displaying that F- and low pH had much strong aggressive attack to cp-Ti and Ti-3Cu alloy. The corroded surface morphology was observed by scanning electron microscopy (SEM), and the roughness was tested in the end. The good corrosion resistance of antibacterial Ti-3Cu alloy suggests its great potential as a long-term biomedical application.