Abstract In this study, functional element coatings on Ti-alloys for biomaterials by plasma electrolytic oxidation (PEO) were studied using different experimental techniques. Si- and Mg-doped hydroxyapatite films were formed on the Ti–6Al–4V alloy via anodization at an applied DC voltage of 280 V for 3 min. The chemical composition of the surface layers was examined using energy-dispersive X-ray spectroscopy mapping and line-profile analysis. The morphology of the surface was observed using field-emission scanning electron microscopy. The phase composition was determined using X-ray diffraction. The size of the micro-pore formed on the Ti–6Al–4V alloy decreased, and the area occupied by the micro-pores decreased with increasing Mg concentration. With the increase in Mg concentration, the number of small micro-pores on the PEO films formed on Ti–6Al–4V alloys increased, whereas the number of large micro-pores decreased. The number of circular particles formed in the pores and on the exterior surface increased with increasing Mg concentration. The thickness of the PEO film was approximately 1.94–2.03 μm and the coating elements Ca, P, Si, and Mg were uniformly distributed throughout the PEO film. The anatase and hydroxyapatite(HA) peaks shifted slightly from the original anatase and pure HA peaks as the Mg concentration increased.

中文翻译：

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等离子电解氧化用于生物材料的钛合金功能元素涂层

摘要 在这项研究中，使用不同的实验技术研究了通过等离子体电解氧化 (PEO) 在生物材料钛合金上的功能元素涂层。Si 和 Mg 掺杂的羟基磷灰石薄膜通过阳极氧化在 Ti-6Al-4V 合金上形成，施加的直流电压为 280 V，持续 3 分钟。使用能量色散 X 射线光谱映射和线轮廓分析检查表面层的化学成分。使用场发射扫描电子显微镜观察表面的形貌。使用X射线衍射确定相组成。Ti-6Al-4V合金上形成的微孔尺寸减小，微孔所占面积随着Mg浓度的增加而减小。随着 Mg 浓度的增加，在 Ti-6Al-4V 合金上形成的 PEO 膜上的小微孔数量增加，而大微孔数量减少。随着Mg浓度的增加，在孔中和外表面上形成的圆形颗粒的数量增加。PEO 膜的厚度约为 1.94-2.03 μm，涂层元素 Ca、P、Si 和 Mg 均匀分布在整个 PEO 膜中。随着镁浓度的增加，锐钛矿和羟基磷灰石 (HA) 峰从原始锐钛矿和纯 HA 峰略微偏移。和 Mg 均匀分布在整个 PEO 薄膜中。随着镁浓度的增加，锐钛矿和羟基磷灰石 (HA) 峰从原始锐钛矿和纯 HA 峰略微偏移。和 Mg 均匀分布在整个 PEO 薄膜中。随着镁浓度的增加，锐钛矿和羟基磷灰石 (HA) 峰从原始锐钛矿和纯 HA 峰略微偏移。