研究 Zr 含量对新开发的用于生物医学应用的近β型钛合金(Ti-25Nb-xZr)的电化学和摩擦学特性的影响

IF 6.7 3区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY
Mamoun Fellah , Naouel Hezil , Dikra Bouras , Nabila Bouchareb , Alejandro Perez Larios , Aleksei Obrosov , Gamal A. El-Hiti , Sabine Weiß
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引用次数: 0

摘要

为了制造出具有特殊性能的骨科用合金,本研究重点探讨了锆(Zr)含量对纳米结构 Ti-25Nb-xZr [x = 5、10、15、20、25 和 30 原子(at.)使用 XRD 和 SEM 技术对结构演变进行了研究。测量了所生产合金的机械特性,包括维氏硬度和杨氏模量。此外,还使用 OCP、EIS 和 PD 方法,在 37 °C、独立 pH 值范围内的林格氏溶液中进行了腐蚀测试。在林格溶液中,使用球盘摩擦仪研究了合金在各种载荷和潮湿条件下的摩擦学行为。结果表明,合金中的锆含量(%)对合金的形态、结构演变和机械特性都有影响。根据形态分析,随着 Zr 含量的增加,颗粒和晶粒尺寸会减小。杨氏模量和维氏硬度也呈现出同样的趋势。EIS 数据表明,合金表面形成了单一的被动膜,添加 Zr 增强了被动膜的耐腐蚀性。极化曲线表明,合金的腐蚀电流密度较低,被动面积较大,但被动膜没有瓦解。同样,锆的加入也降低了腐蚀和被动电流密度值。所有这些结果都表明,钛合金在 Zr 的作用下表现出更高的电化学活性。从摩擦学角度来看,研究发现合金的摩擦系数随着 Zr 含量的增加而降低。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Investigating the effect of Zr content on electrochemical and tribological properties of newly developed near β-type Ti-alloys (Ti–25Nb-xZr) for biomedical applications

In order to create alloys with exceptional properties for orthopedic uses, this study focuses on the impact of zirconium (Zr) content on the structural, electrochemical, and tribological qualities of nanostructured Ti–25Nb-xZr [x = 5, 10, 15, 20, 25, and 30 atomic (at.) %] alloys. The structural evolution was investigated using XRD and SEM techniques. The mechanical characteristics of the produced alloys, including Vickers hardness and Young's modulus, were measured. In addition, the corrosion tests were performed using the OCP, EIS, and PD methods in Ringer's solution within the independent pH range at 37 °C. A ball-on-disc tribometer was used to investigate the tribological behavior of the alloys under various loads and wet conditions using the Ringer solution. It has been verified that Zr content (at. %) in the alloys had an impact on their morphologies, structural evolution, and mechanical characteristics. According to the morphological analysis, the particle and crystallite size decreases with increasing Zr content. Young's modulus and Vickers hardness show the same tendency. The EIS data demonstrated that a single passive film formed on the alloy surfaces, and the addition of Zr enhanced the corrosion resistance of the passive films. The polarization curves demonstrate that the alloys had low corrosion current densities and large passive areas without the passive films disintegrating. Likewise, the inclusion of Zr resulted in a reduction in the corrosion and passive current density values. All of these results suggested that the titanium alloys exhibit a more noble electrochemical activity caused by Zr. From the tribological perspective, it was found that the friction coefficient of the alloys reduced with increasing Zr content.

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来源期刊
Journal of Science: Advanced Materials and Devices
Journal of Science: Advanced Materials and Devices Materials Science-Electronic, Optical and Magnetic Materials
CiteScore
11.90
自引率
2.50%
发文量
88
审稿时长
47 days
期刊介绍: In 1985, the Journal of Science was founded as a platform for publishing national and international research papers across various disciplines, including natural sciences, technology, social sciences, and humanities. Over the years, the journal has experienced remarkable growth in terms of quality, size, and scope. Today, it encompasses a diverse range of publications dedicated to academic research. Considering the rapid expansion of materials science, we are pleased to introduce the Journal of Science: Advanced Materials and Devices. This new addition to our journal series offers researchers an exciting opportunity to publish their work on all aspects of materials science and technology within the esteemed Journal of Science. With this development, we aim to revolutionize the way research in materials science is expressed and organized, further strengthening our commitment to promoting outstanding research across various scientific and technological fields.
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