Fine tuning the neodymium-coated titania nanotubes interfacial properties for orthopedics to enhance corrosion resistance

IF 5.3 2区材料科学 Q1 MATERIALS SCIENCE, COATINGS & FILMS

Surface & Coatings Technology Pub Date : 2025-07-01 DOI:10.1016/j.surfcoat.2025.132447

P. Cheranmadevi , N. Rajendran

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Abstract

The bioinert nature of titanium creates post-surgical complications including lack of proper osseointegration and often causing implant failure. The surface modification with the addition of bioactive coating makes the Ti implant superior to other metallic implants. Rare earth elements (REE) are widely used as substitution elements in hydroxyapatite due to their similar ionic radii of Ca²⁺ ions. This work describes that neodymium was decorated on titania nanotubes (Nd-TNTs) have better corrosion resistance, enhanced bone mineralization, and cell proliferation with good antibacterial activity. Neodymium was incorporated into titania nanotubes (TNTs) through electrophoretic deposition, facilitating the formation of NdPO₄ and Nd₂O₃. The surface characterization confirmed the presence of favourable morphology with suitable elements to support the biological activity. The electrochemical impedance spectroscopic, potentiodynamic polarization, and scanning electrochemical microscopic studies revealed the superior corrosion resistance of Nd-TNTs. The accretion of the apatite layer on Nd-TNTs surface and the entire coverage within 3 days was seen. The developed Nd-TNTs promoted cell proliferation and antibacterial activity, showcasing the developed material's multi-tasking performance. This newly developed material promises faster bone-implant integration.

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微调矫形用钕包覆二氧化钛纳米管界面性能，提高其耐腐蚀性能

钛的生物惰性会造成术后并发症，包括缺乏适当的骨整合，并经常导致种植体失败。添加生物活性涂层的表面修饰使钛种植体优于其他金属种植体。稀土元素（REE）由于具有与Ca2+离子相似的离子半径而被广泛用作羟基磷灰石中的替代元素。本文描述了钕修饰在钛纳米管（Nd-TNTs）上具有更好的耐蚀性、增强骨矿化、促进细胞增殖和良好的抗菌活性。通过电泳沉积将钕引入钛纳米管（TNTs）中，促进NdPO4和Nd2O3的形成。表面表征证实了有利的形态和合适的元素的存在，以支持生物活性。电化学阻抗谱、动电位极化和扫描电化学微观研究表明nd - tnt具有优异的耐腐蚀性能。在3天内观察到nd - tnt表面磷灰石层的增生和完全覆盖。开发的nd - tnt促进细胞增殖和抗菌活性，展示了开发的材料的多任务性能。这种新开发的材料有望更快地与骨植入物整合。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Surface & Coatings Technology 工程技术-材料科学：膜

CiteScore

10.00

自引率

11.10%

发文量

921

审稿时长

19 days

期刊介绍： Surface and Coatings Technology is an international archival journal publishing scientific papers on significant developments in surface and interface engineering to modify and improve the surface properties of materials for protection in demanding contact conditions or aggressive environments, or for enhanced functional performance. Contributions range from original scientific articles concerned with fundamental and applied aspects of research or direct applications of metallic, inorganic, organic and composite coatings, to invited reviews of current technology in specific areas. Papers submitted to this journal are expected to be in line with the following aspects in processes, and properties/performance: A. Processes: Physical and chemical vapour deposition techniques, thermal and plasma spraying, surface modification by directed energy techniques such as ion, electron and laser beams, thermo-chemical treatment, wet chemical and electrochemical processes such as plating, sol-gel coating, anodization, plasma electrolytic oxidation, etc., but excluding painting. B. Properties/performance: friction performance, wear resistance (e.g., abrasion, erosion, fretting, etc), corrosion and oxidation resistance, thermal protection, diffusion resistance, hydrophilicity/hydrophobicity, and properties relevant to smart materials behaviour and enhanced multifunctional performance for environmental, energy and medical applications, but excluding device aspects.