表面织构对关节植入Ti6Al4V生物材料摩擦润滑的影响

IF 2.9 3区 工程技术 Q2 ENGINEERING, CHEMICAL Tribology Letters Pub Date : 2024-12-19 DOI:10.1007/s11249-024-01950-5
Matúš Ranuša, Lukáš Odehnal, Ondřej Kučera, David Nečas, Martin Hartl, Ivan Křupka, Martin Vrbka
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引用次数: 0

摘要

用于大关节和小关节的人工关节内植入物的数量正在稳步增长,因此人们对能够紧密复制人体关节功能的耐用产品的需求也在不断增长。尽管取得了上述进步,但与植入物固定和摩擦表面相关的挑战依然存在。三维打印等先进技术的出现,为解决植入物设计和表面工程中的这些难题提供了一个前景广阔的途径。Ti6Al4V 和 CoCrMo 合金因其生物相容性和骨结合特性而闻名,是很有前途的可打印材料,但它们在铰接表面容易磨损。为了减轻磨损的影响,必须进行表面处理,以促进形成坚固的润滑膜。本研究调查了纹理和电化学抛光在增强接触区域蛋白质聚集方面的潜力。研究采用了往复式模拟器和比色干涉仪来观察接触区域,并测量改性表面的摩擦系数 (CoF)。研究结果表明,纹理表面和电化学抛光相结合可增加蛋白质润滑膜的厚度,从而有可能减少磨损。这些结果表明,通过添加剂技术制造的元素较少的 Ti6Al4V 合金植入体具有利用潜力。
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Effect of Surface Texturing on Friction and Lubrication of Ti6Al4V Biomaterials for Joint Implants

The number of endoprosthetic implants for both large and small joints is increasing at a steady rate, thereby creating a growing demand for durable products that closely replicate the functionality of human joints. Notwithstanding the aforementioned advancements, challenges pertaining to implant fixation and tribological surfaces persist. The advent of progressive technologies, such as three-dimensional printing, offers a promising avenue for addressing these challenges in implant design and surface engineering. The Ti6Al4V and CoCrMo alloys, renowned for their biocompatibility and osseointegration properties, represent promising printable materials, although they are susceptible to wear on articulating surfaces. In order to mitigate the effects of abrasion, it is essential to implement surface treatments to facilitate the formation of a robust lubricating film. This research investigates the potential of texturing and electrochemical polishing to enhance protein aggregation in the contact area. The study employs a reciprocating simulator and colorimetric interferometry to observe the contact area and measure the coefficient of friction (CoF) of modified surfaces. The findings demonstrate that textured surfaces and the combination of electrochemical polishing result in an increase in the thickness of the protein lubrication film, which may potentially reduce wear. These outcomes suggest the potential for the utilization of Ti6Al4V alloy implants with fewer elements manufactured by additive technology.

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来源期刊
Tribology Letters
Tribology Letters 工程技术-工程:化工
CiteScore
5.30
自引率
9.40%
发文量
116
审稿时长
2.5 months
期刊介绍: Tribology Letters is devoted to the development of the science of tribology and its applications, particularly focusing on publishing high-quality papers at the forefront of tribological science and that address the fundamentals of friction, lubrication, wear, or adhesion. The journal facilitates communication and exchange of seminal ideas among thousands of practitioners who are engaged worldwide in the pursuit of tribology-based science and technology.
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