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从用于骨科植入物的PEO涂层Ti6Al4V DMLS合金中释放金属离子

Shaghayegh Javadi¹, Laura Castro¹, Raúl Arrabal¹

¹Departamento de Ingeniería Química y de Materiales, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, 28040 Madrid, Spain.

Journal of functional biomaterials

|October 28, 2025

概括

血电解氧化 (PEO) 提高了直接金属激光烧结 (DMLS) 植入物合金的耐腐蚀性. 闪光PEO涂层提供了卓越的保护,显著减少了来自DMLS Ti6Al4V的离子释放.

科学领域:

材料科学材料科学材料科学
生物材料工程生物材料工程
表面工程是什么?表面工程是什么?

背景情况:

骨科植入物越来越多地使用由直接金属激光烧结 (DMLS) 生产的Ti6Al4V合金.
耐腐蚀性对于植入物寿命和患者安全至关重要.
血电解氧化 (PEO) 是一种表面处理方法,用于改善材料性能.

研究的目的:

研究PEO和闪电PEO涂层对DMLSTi6Al4V.V的耐腐蚀性的影响.
为了比较涂层DMLS和造Ti6Al4V合金在模拟体液 (SBF) 中的性能.
为了评估被涂层合金释放的离子.

主要方法:

使用含有Si,Ca,P,Mg和Zn的PEO (300秒) 和闪光PEO (60秒) 涂层.
涂层和未涂层样品的微观结构,形态和组成特征.
使用潜在动力极化 (PDP) 和电化学阻抗光谱 (EIS) 在37°C的SBF中进行电化学评估.
使用感应合等离子光学发射光谱学 (ICP-OES) 量化离子释放量.

主要成果:

DMLS Ti6Al4V 呈现出比造的 Ti6Al4V 更高的被动性,具有显著较低的 Ti 和 Al 释放,但更高的 V 释放.
闪光PEO涂层是均的和多孔的 (解剖酶/无形相的状),而PEO涂层是异质的.
与未涂层相比,涂层样本显示离子释放减少,闪光PEO为DMLS合金提供了最佳保护.

结论:

闪光PEO涂层显著提高了DMLS Ti6Al4V合金的耐腐蚀性.
涂层起到屏障作用,减少对模拟生理环境的离子释放.
闪光PEO是一种有前途的DMLSTi6Al4V表面处理,用于骨科植入物应用.

关键词:

添加剂制造添加剂制造添加剂制造腐蚀腐蚀是一种腐蚀.植入植入植入植入植入植入植入植入金属释放可以释放金属.血电解氧化的氧化过程合金是一种合金.

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