通过控制双氧水/浓硫酸混合氧化液的反应配比和反应温度,在医用纯钛表面得到具有不同纳米形貌的二氧化钛凝胶层.利用场发射扫描电镜(FE-SEM)、原子力显微镜(AFM)、X射线光电子能谱(XPS)和接触角测定仪对化学氧化处理后的钛表面特性进行了表征,并推导了不同纳米形貌凝胶层的构建机理.结果表明,双氧水/浓硫酸溶液处理是一个热力学控制的化学溶解与氧化的过程,随着浓硫酸含量的增加,溶液中C(H+)增大,凝胶层内TiO2的溶解速度大于溶液沉积出二氧化钛的速度,导致凝胶孔的深度增加最终形成三维网络结构;模拟体液中的矿化实验表明,化学氧化处理钛表面有利于钙磷盐的沉积.
参考文献
| [1] | Ueda, M;Ikeda, M;Ogawa, M .Chemical-hydrothermal combined surface modification of titanium for improvement of osteointegration[J].Materials science & engineering, C. Biomimetic and supramolecular systems,2009(3):994-1000. |
| [2] | 刘建华,吴国龙,李松梅,于美,易俊兰,吴量.化学方法退除钛合金阳极氧化膜的对比研究[J].稀有金属材料与工程,2012(08):1331-1335. |
| [3] | Pegueroles M;Aparicio C;Bosio .Spatial organization of osteoblast fibronectin matrix on titanium surfaces: effects of roughness, chemical heterogeneity and surface energy.[J].Acta biomaterialia,2010(1):291-301. |
| [4] | Keng-Liang Ou;Yung-Hsun Shih;Chiung-Fang Huang;Chang-Chih Chen;Chung-Ming Liu .Preparation Of Bioactive Amorphous-like Titanium Oxide Layer On Titanium By Plasma Oxidation Treatment[J].Applied Surface Science: A Journal Devoted to the Properties of Interfaces in Relation to the Synthesis and Behaviour of Materials,2008(5P1):2046-2051. |
| [5] | Deepak K. Pattanayak;Takahiro Kawai;Tomiharu Matsushita;Hiroaki Takadama;Takashi Nakamura;Tadashi Kokubo .Effect of HC1 concentrations on apatite-forming ability of NaOH-HCl- and heat-treated titanium metal[J].Journal of Materials Science. Materials in Medicine,2009(12):2401. |
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