使用硼化方法对 Ti-Al-V 超合金脊柱植入物进行表面硬化。

IF 1 4区 医学 Q4 ENGINEERING, BIOMEDICAL
Mehdi Hekimoğlu, Hıdır Özer, Kamil Kiraz, Ceylan Onursal, Ferit Siyahcan, Ali Fahir Özer
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引用次数: 0

摘要

背景:我们比较了未加工的 Ti-Al-V 超级合金经关节植入螺钉与硼化和表面硬化的经关节植入螺钉:目的:生产硬度更高、更不易碎的螺钉,改善患者的术后预后:方法:用元素硼浆对试样进行绿体封装,在高温下烧结以确保硼金属扩散,从而实现表面硬化。硼逐渐向 Ti-Al-V 超级合金基体中迁移,同时抑制铝的迁移,从而获得厚度为 15 微米的均匀硼化表面。均匀的外部外壳富含最坚硬的陶瓷之一 TiB2。硼渗透减少的 Ti-Al-V 核心材料显示出内聚过渡,确保了完整的核心-表面结构:结果:扫描电子显微镜图像证实了完全均匀、一致和无层压的表面形成。能量色散 X 射线监测了元素结构图,证明硼取代了表面的铝位点,最终形成了 TiB2。该工艺将工具的硬度和机械阻力提高了 8.6 倍:结论:表面硬化、硼化的足弓螺钉可对预后产生积极影响。要证明使用的安全性,还需要进行体内研究。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Surface hardening of Ti-Al-V superalloy spinal implant by using the boronization method.

Background: We compared the raw Ti-Al-V super alloy transpedicular implant screws with boronized and surface-hardened transpedicular implant screws.

Objective: To improve patients' postoperative prognosis with the production of harder and less fragile screws.

Methods: Surface hardening was achieved by applying green-body encapsulation of the specimen with elemental boron paste which is sintered at elevated temperatures to ensure the boron-metal diffusion. Boron transported into the Ti-Al-V super alloy matrix gradually while suppressing aluminum and a homogeneously boronized surface with a thickness of ∼15 microns was obtained. The uniform external shell was enriched with TiB2, which is one of the hardest ceramics. The Ti-Al-V core material, where boron penetration diminishes, shows cohesive transition and ensures intact core-surface structure.

Results: Scanning electron microscope images confirmed a complete homogeneous, uniform and non-laminating surface formation. Energy-dispersive X-ray monitored the elemental structural mapping and proved the replacement of the aluminum sites on the surface with boron ending up the TiB2. The procedure was 8.6 fold improved the hardness and the mechanical resistance of the tools.

Conclusions: Surface-hardened, boronized pedicular screws can positively affect the prognosis. In vivo studies are needed to prove the safety of use.

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来源期刊
Bio-medical materials and engineering
Bio-medical materials and engineering 工程技术-材料科学:生物材料
CiteScore
1.80
自引率
0.00%
发文量
73
审稿时长
6 months
期刊介绍: The aim of Bio-Medical Materials and Engineering is to promote the welfare of humans and to help them keep healthy. This international journal is an interdisciplinary journal that publishes original research papers, review articles and brief notes on materials and engineering for biological and medical systems. Articles in this peer-reviewed journal cover a wide range of topics, including, but not limited to: Engineering as applied to improving diagnosis, therapy, and prevention of disease and injury, and better substitutes for damaged or disabled human organs; Studies of biomaterial interactions with the human body, bio-compatibility, interfacial and interaction problems; Biomechanical behavior under biological and/or medical conditions; Mechanical and biological properties of membrane biomaterials; Cellular and tissue engineering, physiological, biophysical, biochemical bioengineering aspects; Implant failure fields and degradation of implants. Biomimetics engineering and materials including system analysis as supporter for aged people and as rehabilitation; Bioengineering and materials technology as applied to the decontamination against environmental problems; Biosensors, bioreactors, bioprocess instrumentation and control system; Application to food engineering; Standardization problems on biomaterials and related products; Assessment of reliability and safety of biomedical materials and man-machine systems; and Product liability of biomaterials and related products.
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