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首页> 外文期刊>International Journal of Electrochemical Science >Improving the Anti-Corrosion Ability of Anodization Film of AZ31B Magnesium Alloy by Addition of NH4VO3 in the Electrolyte
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Improving the Anti-Corrosion Ability of Anodization Film of AZ31B Magnesium Alloy by Addition of NH4VO3 in the Electrolyte

机译：通过在电解液中添加NH 4 VO 3 来提高AZ31B镁合金阳极氧化膜的耐腐蚀能力

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AZ31B magnesium alloy was anodized in an alkaline electrolyte containing sodium borate, sodiumsilicate and sodium citrate. Ammonium metavanadate (NH4VO3) was used as an additive to improvethe anti-corrosion ability of anodization film. The anodization film was characterized by X-raydiffraction and scanning electron microscopy. The anti-corrosion ability of the film was evaluated by- 2+ electrochemical impedance spectrum. The results show that VO3 ions react with Mg to form yellow- magnesium vandate. Magnesium oxide in anodization film is restrained by VO3 . The pores on the filmdecreases and the cracks can be filled by the addition of NH4VO3. The film also becomes smootherand compacter which increase the resistance of film and charge transfer resistance of the corrosionprocess of the AZ31B magnesium alloy. The anti-corrosion ability of the anodization film is obviouslyenhanced.
机译：AZ31B镁合金在含有硼酸钠，硅酸钠和柠檬酸钠的碱性电解液中进行阳极氧化。偏钒酸铵（NH4VO3）被用作添加剂来提高阳极氧化膜的防腐能力。通过X射线衍射和扫描电子显微镜对阳极氧化膜进行表征。通过-2+电化学阻抗谱评价膜的抗腐蚀能力。结果表明，VO3离子与Mg反应形成黄色镁钒酸盐。阳极氧化膜中的氧化镁受到VO3的限制。膜上的孔减少，裂纹可通过添加NH4VO3来填充。膜也变得更光滑和致密，这增加了膜的电阻和AZ31B镁合金腐蚀过程的电荷转移阻力。阳极氧化膜的抗腐蚀能力明显增强。

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