Fabrication of tantalum oxide/carbon nanotubes thin film composite on titanium substrate
Fabrication of tantalum oxide/carbon nanotubes thin film composite on titanium substrate
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DOI：
10.1016/j.jcis.2010.01.023
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发表时间：
2010-04-15
影响因子：
9.9
通讯作者：
Mekhalif, Z.
中科院分区：
文献类型：
--
作者：
Arnould, C.;Koranyi, T. I.;Mekhalif, Z.
新型生物材料的开发是材料科学中最具挑战性的任务之一。金属，特别是钛及其合金，由于其良好的耐腐蚀性、机械性能和生物相容性而被广泛使用。然而，合金的毒性、在体液中的长期降解和松动的风险仍然是问题。为了提高材料的耐腐蚀性并减少离子释放，我们的兴趣集中在钽上，钽是另一种以其优异的生物相容性和抗生物腐蚀性而闻名的金属。这些非常好的性能使钽感兴趣的生物材料的金属，但它的高成本和高密度使其不适合用作散装material.In本文中，我们建议联合收割机结合良好的整体性能的钛与钽的优良表面性能，通过使用溶胶-凝胶沉积的钽氧化物层上裸钛。此外，由于骨科植入物是我们长期目标的一部分，我们报告了氧化钽和多壁碳纳米管（MWCNTs）复合层的形成。多壁碳纳米管已被证明在与骨和骨细胞接触方面具有有前途的特性，并且可以加强植入物。使用X射线光电子能谱（XPS）和扫描电子显微镜（SEM）进行表征。(C)2010年爱思唯尔公司All rights reserved.
The development of new biomaterials is one of the most challenging tasks in material science. Metals and particularly titanium and its alloys are widely used because of their good corrosion resistance, mechanical properties and biocompatibility. However, the toxicity of alloys, long term degradation in body fluids and risks of loosening are still problematic. To increase the corrosion resistance of the material and reduce ion release, our interest focused on tantalum, another metal well known for its excellent biocompatibility and resistance to bio-corrosion. These very good properties make tantalum a metal of interest for biomaterials but its high cost and high density disqualify it for use as bulk material.In this paper, we propose to combine the good bulk properties of titanium with the excellent surface properties of tantalum by using sol-gel deposition of a tantalum oxide layer on bare titanium. Furthermore, as orthopedics implants are part of our long term goals, we report on the formation of a composite layer of tantalum oxide and multiwalled carbon nanotubes (MWCNTs). MWCNTs have been shown to have promising properties in contact with bone and bone cells and could strengthen the implant. Characterizations are performed using X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM). (C) 2010 Elsevier Inc. All rights reserved.