Investigation of in-vitro bioactivity, electrochemical corrosion, wettability and adhesion properties of bioglass-based coatings modified with Y2O3 and Zr on novel β-type Ti-30Zr-5Mo alloys

IF 5.3 2区材料科学 Q1 MATERIALS SCIENCE, COATINGS & FILMS

Surface & Coatings Technology Pub Date : 2024-09-07 DOI:10.1016/j.surfcoat.2024.131335

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Abstract

In this study, the in-vitro bioactivity, electrochemical corrosion resistance, wettability, and adhesion properties of bioglass-based coatings modified with Y₂O₃ and ZrO₂ on Ti-30Zr-5Mo alloy were investigated. The coatings were prepared using the sol-gel method and applied to the alloy substrates through dip-coating. The surface morphology and elemental composition of the coatings were analyzed using SEM/EDS and XRD techniques. Potentiodynamic polarization (PDS) and electrochemical impedance spectroscopy (EIS) were employed to assess the electrochemical behavior of the coatings under in-vitro conditions. Contact angle measurements were conducted to evaluate the wettability of the surfaces. Adhesion strength was measured using tensile testing in accordance with ISO 13779-2 standards. Bioactivity tests were performed by immersing the samples in simulated body fluid (SBF). The results demonstrate that the addition of Y₂O₃ and ZrO₂ improves adhesion strength and corrosion potential, but introducing localized galvanic effects that increase the corrosion current density. Besides, the coatings maintained their structural integrity after the bioactivity tests, and promoted new apatite formation.

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新型 β 型 Ti-30Zr-5Mo 合金上以 Y2O3 和 Zr 改性的生物玻璃基涂层的体外生物活性、电化学腐蚀、润湿性和附着性研究

本研究考察了在 Ti-30Zr-5Mo 合金上用 Y2O3 和 ZrO2 修饰的生物玻璃基涂层的体外生物活性、耐电化学腐蚀性、润湿性和附着性。涂层采用溶胶-凝胶法制备，并通过浸涂法涂覆在合金基材上。使用 SEM/EDS 和 XRD 技术分析了涂层的表面形貌和元素组成。采用电位极化（PDS）和电化学阻抗光谱（EIS）评估了涂层在体外条件下的电化学行为。接触角测量用于评估表面的润湿性。根据 ISO 13779-2 标准，使用拉伸试验测量了附着强度。将样品浸入模拟体液（SBF）中进行生物活性测试。结果表明，添加 Y2O3 和 ZrO2 可提高附着强度和腐蚀电位，但会产生局部电偶效应，增加腐蚀电流密度。此外，涂层在生物活性测试后保持了结构完整性，并促进了新磷灰石的形成。

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来源期刊

Surface & Coatings Technology 工程技术-材料科学：膜

CiteScore

10.00

自引率

11.10%

发文量

921

审稿时长

19 days

期刊介绍： Surface and Coatings Technology is an international archival journal publishing scientific papers on significant developments in surface and interface engineering to modify and improve the surface properties of materials for protection in demanding contact conditions or aggressive environments, or for enhanced functional performance. Contributions range from original scientific articles concerned with fundamental and applied aspects of research or direct applications of metallic, inorganic, organic and composite coatings, to invited reviews of current technology in specific areas. Papers submitted to this journal are expected to be in line with the following aspects in processes, and properties/performance: A. Processes: Physical and chemical vapour deposition techniques, thermal and plasma spraying, surface modification by directed energy techniques such as ion, electron and laser beams, thermo-chemical treatment, wet chemical and electrochemical processes such as plating, sol-gel coating, anodization, plasma electrolytic oxidation, etc., but excluding painting. B. Properties/performance: friction performance, wear resistance (e.g., abrasion, erosion, fretting, etc), corrosion and oxidation resistance, thermal protection, diffusion resistance, hydrophilicity/hydrophobicity, and properties relevant to smart materials behaviour and enhanced multifunctional performance for environmental, energy and medical applications, but excluding device aspects.

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