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用于单轴膝关节假体的 Ti-Al-V 合金的开发：机械、腐蚀和摩擦腐蚀行为的评估。

Development of Ti-Al-V alloys for usage as single-axis knee prostheses: evaluation of mechanical, corrosion, and tribocorrosion behaviors.

机构信息

Laboratório de Anelasticidade e Biomateriais, São Paulo State University (UNESP), School of Sciences, Bauru, SP, 17033-360, Brazil.

Laboratório de Caraterização Física e Reológica, São Paulo State University (UNESP), School of Sciences, Bauru, SP, 17033-360, Brazil.

出版信息

Sci Rep. 2023 Mar 16;13(1):4349. doi: 10.1038/s41598-023-31548-1.

DOI:10.1038/s41598-023-31548-1
PMID:36927876
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10020473/
Abstract

Single-axis knee prosthesis is an artificial biomechanical device that provides motion to amputees without the need for assistance appliances. Besides it is mainly composed of metallic materials, the current commercial materials did not group adequate properties for long-term usage or accessible cost. This study produced and characterized Ti-(10 -x)Al-xV (x = 0, 2, and 4 wt.%) alloys for potential use as single-axis knee prostheses. The samples exhibited a gradual decrease in the density values, with proper chemical mixing of the alloying elements on the micro-scale. The phase composition exhibited a primary α phase with a minor α' + β phase for the Ti-8Al-2V and Ti-6Al-4V samples. Due to their different atomic radius compared to Ti, the addition of alloying elements changed the cell parameters. Their selected mechanical properties (Young's modulus, Vickers microhardness, and damping factor) performed better values than the CP-Ti grade 4. The samples also exhibited good corrosion properties against the simulated marine solution. The tribocorrosion resistance of the samples was better than the reference material, with the wear tracks composed of some tribolayers and grooves resulting from adhesive and abrasive wear. The Ti-10Al alloy displayed the best properties and estimated low cost to be used as single-axis knee prostheses.

摘要

单轴膝关节假体是一种人工生物力学装置，为截肢者提供运动而无需辅助器具。除了它主要由金属材料组成外，目前的商业材料并没有为长期使用或可负担的成本而组合足够的性能。本研究生产并表征了 Ti-(10-x)Al-xV(x=0、2 和 4wt.%)合金，以作为单轴膝关节假体的潜在用途。样品的密度值逐渐降低，在微尺度上适当混合了合金元素的化学成分。相组成表现为 Ti-8Al-2V 和 Ti-6Al-4V 样品的主要α相和少量的α'+β相。由于与 Ti 的原子半径不同，添加合金元素改变了晶胞参数。它们选择的力学性能（杨氏模量、维氏显微硬度和阻尼因子）表现出比 CP-Ti 等级 4 更好的值。样品还表现出对模拟海洋溶液的良好耐腐蚀性。与参考材料相比，样品的摩擦腐蚀阻力更好，磨损轨迹由一些摩擦层和由于粘着和磨料磨损而形成的凹槽组成。Ti-10Al 合金显示出最佳性能和估计的低成本，可作为单轴膝关节假体使用。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f627/10020473/f0e7991bb700/41598_2023_31548_Fig10_HTML.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f627/10020473/f0e7991bb700/41598_2023_31548_Fig10_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f627/10020473/c7eff63159ca/41598_2023_31548_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f627/10020473/c7430ec85482/41598_2023_31548_Fig2_HTML.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f627/10020473/ee08ab67c591/41598_2023_31548_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f627/10020473/d3ee5f0a9062/41598_2023_31548_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f627/10020473/8327d451ed2c/41598_2023_31548_Fig8_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f627/10020473/dc6cf2e550f6/41598_2023_31548_Fig9_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f627/10020473/f0e7991bb700/41598_2023_31548_Fig10_HTML.jpg

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