Tribocorrosion and antibacterial behaviour of boron-embedded oxide coated Ti45Nb by plasma electrolytic oxidation

IF 6.3 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Applied Surface Science Pub Date : 2025-05-29 DOI:10.1016/j.apsusc.2025.163668

Yenal S. Vangolu , Michael G. Bryant , Yusuf B. Bozkurt , Raghda M. Abdelgawad , Reem El-Gendy , Richard M. Hall , Halim Kovacı

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Abstract

While titanium alloy biomaterials have moderate overall properties, they are often surface-engineered to enhance corrosion resistance, wear, biocompatibility, and antimicrobial qualities. Among various coating processes, PEO is favoured for its ability to embed ions and nanoparticles into the oxide coating. In this study, Ca, P and B-embedded titania layers were successfully formed on the surface of Ti45Nb substrates using PEO. In order to investigate the effect of the boron amount on tribocorrosion and antibacterial/antimicrobial properties, two different boron contents were used in B-embedded coatings. The results were compared with those of the scientific literature. As a result of XRD analyses, anatase and rutile phases, the two main polymorphs of TiO₂, were detected on the substrate surfaces as expected. Ca, P and B ions embedded in the oxide layer were determined by XPS analyses. The simultaneous effects of wear and corrosion in the SBF fluid on the oxide coating with and without B embedment were investigated. At the same time, the impact of the presence of boron ion in the oxide layer and the amount of boron in the electrolyte on antimicrobial/antibacterial properties were analysed.

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等离子体电解氧化包埋硼Ti45Nb的摩擦腐蚀及抗菌性能

虽然钛合金生物材料具有中等的整体性能，但它们通常经过表面工程处理，以增强耐腐蚀性、耐磨性、生物相容性和抗菌性能。在各种涂层工艺中，PEO因其将离子和纳米粒子嵌入氧化物涂层的能力而受到青睐。在本研究中，利用PEO成功地在Ti45Nb衬底表面形成了Ca， P和b包埋的二氧化钛层。为了研究硼含量对硼包埋涂层摩擦腐蚀和抗菌性能的影响，采用两种不同硼含量的硼包埋涂层。结果与科学文献的结果进行了比较。XRD分析结果表明，TiO2的两种主要晶型——锐钛矿相和金红石相在衬底表面被检测到。用XPS法测定了氧化层中的Ca、P、B离子。研究了SBF流体中磨损和腐蚀对包埋B和不包埋B的氧化层的同时影响。同时，分析了氧化层中硼离子的存在和电解质中硼的含量对抗菌性能的影响。

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来源期刊

Applied Surface Science 工程技术-材料科学：膜

CiteScore

12.50

自引率

7.50%

发文量

3393

审稿时长

67 days

期刊介绍： Applied Surface Science covers topics contributing to a better understanding of surfaces, interfaces, nanostructures and their applications. The journal is concerned with scientific research on the atomic and molecular level of material properties determined with specific surface analytical techniques and/or computational methods, as well as the processing of such structures.