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ZnO薄膜作为Mg基合金上的有前途的腐蚀防护

Aneta Kania¹, Magdalena M Szindler¹, Marek Szindler²

¹Department of Engineering Materials and Biomaterials, Faculty of Mechanical Engineering, Silesian University of Technology, Konarskiego 18a, 44-100 Gliwice, Poland.

Materials (Basel, Switzerland)

|December 31, 2025

概括

合金上的更厚的氧化 (ZnO) 涂层显著提高了耐腐蚀性,使它们成为可生物降解植入物的有前途. 通过在MgCa2Zn1Gd3.3.上1500周期的ZnO层实现了最佳保护.

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
腐蚀科学腐蚀科学

背景情况:

合金由于其机械性能,对可生物降解的植入物来说是有希望的.
然而,它们在生理环境中的快速腐蚀限制了临床应用.
保护性涂层对于控制降解速度至关重要.

研究的目的:

研究ZnO薄膜厚度对MgCa4Zn1Gd1和MgCa2Zn1Gd3合金的微观结构和耐腐蚀性的影响.
评估通过原子层沉积 (ALD) 沉积的ZnO涂层对于可生物降解植入物的适用性.

主要方法:

使用ALD,在MgCa4Zn1Gd1和MgCa2Zn1Gd3合金上沉积了不同厚度 (42.5,95.4,133.7nm) 的ZnO薄膜.
涂层的表征涉及X射线衍射 (XRD),拉曼光谱,SEM/EDS,AFM和FTIR.
通过在37°C的林格溶液中进行潜在动力极化和浸泡试验来评估耐腐蚀性.

主要成果:

XRD和Raman证实了具有同质形态的晶体ZnO形成.
表面粗度随着ZnO厚度的增加而降低,在MgCa2Zn1Gd3上以1500个周期获得最光滑的表面 (R_a = 7.65nm).
较厚的 ZnO 涂层提高了耐腐蚀性,由 1500 循环涂层的 MgCa2Zn1Gd3 合金的减少演变 (20.89 mL·cm-2) 证明.
FTIR分析确定了Mg (OH) ₂和MgCO₃作为主要的腐蚀产物,在浸泡100小时后,ZnO涂层保持完好.

结论:

由ALD沉积在MgCa2Zn1Gd3合金上的1500循环ZnO涂层提供了卓越的腐蚀保护.
这种涂有ZnO的合金显示出作为生物降解医疗植入物材料的巨大潜力.
优化ZnO涂层厚度对于提高基于的植入物的体内性能至关重要.

关键词:

在 ALD 方法中,使用 ALD 方法.ZnO薄膜是一种薄膜.腐蚀研究腐蚀研究结构分析,结构分析分析.在地形分析分析分析.

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Corrosion

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