碳离子注入医用Ti性能研究
作者简介 夏 超,男,1993年生,硕士生
收稿日期: 2017-07-05
网络出版日期: 2017-08-14
基金资助
国家杰出青年科学基金项目 No.51525207,国家自然科学基金项目No.51401234及上海市科委科技基金项目No.15441904900
Properties of Carbon Ion Implanted Biomedical Titanium
Received date: 2017-07-05
Online published: 2017-08-14
Supported by
Supported by National Science Foundation for Distinguished Young Scholars of China (No.51525207), National Natural Science Foundation of China (No.51401234) and Shanghai Committee of Science and Technology, China (No.15441904900)
采用等离子体浸没离子注入与沉积(PIII&D)技术将碳离子注入Ti基体,研究碳离子注入对材料表面形貌、结构和组成的影响,评价改性材料的表面亲水性、荷电性、力学性能、耐腐蚀性以及细菌黏附能力和细胞相容性,探讨材料的结构和组成对其生物学性能的影响。结果表明,碳等离子体浸没离子注入与沉积(C-PIII&D)技术处理的Ti基体表面主要由无定形碳组成。经碳离子注入改性,Ti表面形貌无明显变化,但其疏水性增加,表面负电性提升,表面力学性能和耐腐蚀性能得到提高。基体表面细胞的黏附、铺展和增殖情况良好,同时对大肠杆菌的黏附具有一定的抑制作用。
夏超 , 钱仕 , 王东辉 , 刘宣勇 . 碳离子注入医用Ti性能研究[J]. 金属学报, 2017 , 53(10) : 1393 -1401 . DOI: 10.11900/0412.1961.2017.00271
Titanium and its alloys are widely used in hard tissue replacements because of their good biocompatibility. However, titanium and its alloys cannot meet all of the clinical requirements. In this work, carbon ions were implanted into the titanium surfaces using plasma immersion ion implantation and deposition (PIII&D) technology to improve the mechanical properties, corrosion resistance, and biological and antibacterial activities. Influences of the injected carbon on the surface morphology, composition and structure of titanium were investigated. Hydrophilicity, surface potential, surface mechanical properties, corrosion resistance, bacterial adhesion and biocompatibility of the modified titanium surfaces were evaluated, and the effects which the structure and composition of the modified layer have on their biological properties were elaborated preliminarily. Experimental results show that the modified layer treated by carbon plasma immersion ion implantation and deposition (C-PIII&D) is mainly composed of amorphous carbon. The surface morphology of the modified titanium has no obvious change. However, its surface turns to be more hydrophobic and electronegative, and the surface mechanical properties and corrosion resistance are improved. Cell adhesion, spreading and proliferation on the modified surface are in good condition while the adhesion of E. coli is inhibited to a certain extent.
Key words： Ti,PIII&D; C; mechanical property; corrosion resistance; bacterial adhesion
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