Gelatin-based forsterite–hydroxyapatite hybrid coating on Ti6Al4V to improve its biocompatibility and corrosion resistance

IF 0.7 4区材料科学 Q4 METALLURGY & METALLURGICAL ENGINEERING

International Journal of Materials Research Pub Date : 2023-12-21 DOI:10.1515/ijmr-2022-0481

P. S. Prakash, S. Barnwal, Pravin Kumar Shukla, Jitendra Mehta, Prashant Kumar, Ravi Prakash Tewari

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Abstract

Abstract Titanium and its alloys are extensively used for medical implant material due to their superior biocompatibility, corrosion resistance, and strength. However, fabrication of corrosion free titanium and its alloys is still a challenging task since it might affect the surrounding tissues. Therefore, some protection is needed to enhance the performance of the implants in the body in terms of biocompatibility and corrosion resistance. In this work, the hybrid of gelatin-based forsterite–hydroxyapatite synthesized by the sol–gel process was coated by dip-coating on titanium alloy (Ti6Al4V). The variable concentration effects of forsterite–hydroxyapatite in gelatin matrix and the coating applications on the surface morphology as well as corrosion performance of coated substrates were evaluated. The electrochemical corrosion behaviour was investigated through Tafel polarization curves. Outcomes show that the substrate prepared with 5 wt.% of forsterite–hydroxyapatite has a maximum corrosion resistance, crack-free coating, is hermetic and adherent to the substrate.

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在 Ti6Al4V 上形成明胶基硬石膏-羟基磷灰石混合涂层，以改善其生物相容性和耐腐蚀性能

摘要钛及其合金具有优异的生物相容性、耐腐蚀性和强度，因此被广泛用于医疗植入材料。然而，制造无腐蚀的钛及其合金仍是一项具有挑战性的任务，因为它可能会影响周围组织。因此，需要一些保护措施来提高植入物在体内的生物相容性和耐腐蚀性能。在这项工作中，采用溶胶-凝胶工艺合成的明胶基雌甾-羟基磷灰石混合体通过浸涂法被涂覆在钛合金（Ti6Al4V）上。评估了明胶基质中菊石-羟基磷灰石的浓度变化以及涂层应用对涂层基底表面形态和腐蚀性能的影响。通过塔菲尔极化曲线研究了电化学腐蚀行为。结果表明，用 5 wt.% 的沸石-羟基磷灰石制备的基底具有最高的耐腐蚀性，涂层无裂纹，密封性好，与基底的附着力强。

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

International Journal of Materials Research 工程技术-冶金工程

CiteScore

1.30

自引率

12.50%

发文量

119

审稿时长

6.4 months

期刊介绍： The International Journal of Materials Research (IJMR) publishes original high quality experimental and theoretical papers and reviews on basic and applied research in the field of materials science and engineering, with focus on synthesis, processing, constitution, and properties of all classes of materials. Particular emphasis is placed on microstructural design, phase relations, computational thermodynamics, and kinetics at the nano to macro scale. Contributions may also focus on progress in advanced characterization techniques. All articles are subject to thorough, independent peer review.