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首页> 美国卫生研究院文献>Materials >Investigation of Zinc and Phosphorus Elements Incorporated into Micro-Arc Oxidation Coatings Developed on Ti-6Al-4V Alloys
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Investigation of Zinc and Phosphorus Elements Incorporated into Micro-Arc Oxidation Coatings Developed on Ti-6Al-4V Alloys

机译：Ti-6Al-4V合金微弧氧化膜中锌和磷元素的研究

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摘要

In order to clarify the mechanism that zinc and phosphorus elements entering the micro-arc oxidation (MAO) coatings developed on Ti-6Al-4V alloys, anodic coatings containing different zinc and phosphorus were fabricated using an orthogonal experiment of four factors with three levels in an electrolyte containing EDTA-ZnNa2, KOH, and phytic acid. Surface morphology, element composition, chemical state and phase structure of MAO coatings were characterized by scanning electron microscope (SEM), energy dispersive X-ray spectrometer (EDS), X-ray photoelectron spectroscopy (XPS) and X-ray diffraction (XRD). The concentrations of zinc and phosphorus in the electrolyte were analyzed by an inductively coupled plasma optical emission spectrometry (ICP-OES). The results show that zinc and phosphorus elements in MAO coatings exist in the form of Zn3(PO4)2. Phytic acid is the most important factor on both zinc and phosphorus contents of MAO coatings. With the increase of phytic acid concentration or the decrease of KOH concentration, the contents of zinc and phosphorus in MAO coatings present a similarly increasing tendency. Our results indicate that phosphorus takes part in coating formation mainly by diffusion, while zinc enters into MAO coatings with phosphorus from phytic acid.
机译：为了弄清楚锌和磷元素进入在Ti-6Al-4V合金上开发的微弧氧化（MAO）涂层的机理，使用四个因子和三个水平的四个因素的正交试验制备了包含不同锌和磷的阳极涂层。含有EDTA-ZnNa2，KOH和植酸的电解质。通过扫描电子显微镜（SEM），能量色散X射线能谱仪（EDS），X射线光电子能谱（XPS）和X射线衍射（XRD）表征了MAO涂层的表面形态，元素组成，化学状态和相结构。 。电解质中锌和磷的浓度通过电感耦合等离子体发射光谱法（ICP-OES）进行分析。结果表明，MAO涂层中的锌和磷元素以Zn3（PO4）2的形式存在。植酸是影响MAO涂层中锌和磷含量的最重要因素。随着植酸浓度的增加或KOH浓度的降低，MAO涂层中锌和磷的含量也呈现出类似的增长趋势。我们的结果表明磷主要通过扩散参与涂层的形成，而锌则以植酸中的磷进入MAO涂层。

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