Investigation on the mechanism and properties of HA/TiO2 composite coatings with selecting Ca/P contents by plasma electrolytic oxidation

IF 3.9 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY Journal of Materials Science Pub Date : 2024-10-07 DOI:10.1007/s10853-024-10287-2

Jing Yang, Yuqing Luo, Yiku Xu, Jianli Jiang, Yongnan Chen, Qinyang Zhao, Jianmin Hao, Xi Chen, Xiaokang Yang, Binli Luo

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Abstract

In the current study, a HA/TiO₂ composite coating is effectively fabricated on a Ti-13Nb-13Zr alloy using the plasma electrolytic oxidation (PEO) technique. Electrolytes with different Ca/P contents are selected to study the evolution of phase composition and microstructure of PEO coating. The relationship between Ca/P contents and the wear resistance and corrosion resistance of the coatings are evaluated. The Ca/P-30 g coating exhibits the best performance with Ca/P≈1.66. The average thickness and roughness of the coating manufactured by this system are about 159 µm and 1.591 µm. The HA/TiO₂ coatings akin to honeycomb have analogous pore size and uniform distribution, and the phase composition is mainly anatase. Compared with the substrate, the corrosion current density decreases by 19.65% and the corrosion potential increases by 0.805 V. The findings suggest that suitable Ca/P can promote the formation of HA, which is associated with the nucleation and growth rate of HA crystal. Furthermore, the formation mechanism of HA is simulated and the effect of Ca/P on the growth of HA is discussed. The process aims to reduce the allergic and toxic reactions caused by Ti-13Nb-13Zr implants, which is of great significance for increasing the service life of titanium alloy implants and reducing the implant failure.

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等离子电解氧化法研究不同 Ca/P 含量的 HA/TiO2 复合涂层的机理和性能

在本研究中，利用等离子电解氧化（PEO）技术在 Ti-13Nb-13Zr 合金上有效地制造了 HA/TiO2 复合涂层。选择不同 Ca/P 含量的电解质来研究 PEO 涂层的相组成和微观结构的演变。评估了 Ca/P 含量与涂层耐磨性和耐腐蚀性之间的关系。Ca/P-30 g涂层的性能最好，Ca/P≈1.66。该系统生产的涂层平均厚度和粗糙度分别约为 159 µm 和 1.591 µm。类似于蜂窝的 HA/TiO2 涂层具有相似的孔隙大小和均匀分布，相组成主要是锐钛矿。研究结果表明，合适的 Ca/P 能促进 HA 的形成，这与 HA 晶体的成核和生长速度有关。此外，还模拟了 HA 的形成机制，并讨论了 Ca/P 对 HA 生长的影响。该工艺旨在减少 Ti-13Nb-13Zr 植入物引起的过敏和毒性反应，对提高钛合金植入物的使用寿命和减少植入物失效具有重要意义。

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来源期刊

Journal of Materials Science 工程技术-材料科学：综合

CiteScore

7.90

自引率

4.40%

发文量

1297

审稿时长

2.4 months

期刊介绍： The Journal of Materials Science publishes reviews, full-length papers, and short Communications recording original research results on, or techniques for studying the relationship between structure, properties, and uses of materials. The subjects are seen from international and interdisciplinary perspectives covering areas including metals, ceramics, glasses, polymers, electrical materials, composite materials, fibers, nanostructured materials, nanocomposites, and biological and biomedical materials. The Journal of Materials Science is now firmly established as the leading source of primary communication for scientists investigating the structure and properties of all engineering materials.