电沉积羟基磷灰石基生物涂料:最新进展和未来挑战

M. S. Safavi, F. Walsh, M. Surmeneva, R. Surmenev, J. Khalil-Allafi
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引用次数: 62

摘要

自20世纪50年代合成羟基磷灰石问世以来,羟基磷灰石已成为生物植入物的重要涂层材料。HAp涂层需要控制表面粗糙度/孔隙率,足够的耐腐蚀性,并需要表现出良好的摩擦学性能。沉积速度必须足够快,并且涂层技术需要在具有不同结构、成分、尺寸和形状的基底上以不同的尺度应用。对干法和湿法涂层进行了详细的概述。电沉积的优点包括控制厚度和形态,能够覆盖广泛的组件尺寸/形状以及易于工业加工。脉冲电流和电位技术在不同的金属材料/植入物上提供了更致密和更均匀的涂层。研究了HAp电沉积的机理,重点讨论了操作变量对镀层性能的影响。对该领域的最新进展进行了严格审查。矿物取代和含颗粒、复合羟基磷灰石涂层的发展,包括由金属、陶瓷和聚合物颗粒增强的羟基磷灰石涂层;碳纳米管,改性石墨烯,壳聚糖和肝素,详细考虑。指出了电沉积羟基磷灰石涂层有待进一步研究的技术难题,并对电沉积羟基磷灰石涂层的发展前景进行了展望。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Electrodeposited Hydroxyapatite-Based Biocoatings: Recent Progress and Future Challenges
Hydroxyapatite has become an important coating material for bioimplants, following the introduction of synthetic HAp in the 1950s. The HAp coatings require controlled surface roughness/porosity, adequate corrosion resistance and need to show favorable tribological behavior. The deposition rate must be sufficiently fast and the coating technique needs to be applied at different scales on substrates having a diverse structure, composition, size, and shape. A detailed overview of dry and wet coating methods is given. The benefits of electrodeposition include controlled thickness and morphology, ability to coat a wide range of component size/shape and ease of industrial processing. Pulsed current and potential techniques have provided denser and more uniform coatings on different metallic materials/implants. The mechanism of HAp electrodeposition is considered and the effect of operational variables on deposit properties is highlighted. The most recent progress in the field is critically reviewed. Developments in mineral substituted and included particle, composite HAp coatings, including those reinforced by metallic, ceramic and polymeric particles; carbon nanotubes, modified graphenes, chitosan, and heparin, are considered in detail. Technical challenges which deserve further research are identified and a forward look in the field of the electrodeposited HAp coatings is taken.
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