【摘要】 镁合金在电子工业中的快速发展对装饰性能提出了更高的要求。主要研究了如何在微弧氧化的同时进行氧化着色。膜层制备选取的基材为AZ91,电解溶液由硅酸盐为主的碱性溶液组成,配方为:Na₂SiO₃ 5～30g/L,KMnO₄ 1～20g/L,NaOH 1～5g/L,KF 5～8g/L,Na₃C₆H₅O₇ 0.5～2g/L,EDTA 0.5～2g/L。在电解液中添加着色盐KMnO₄,形成了颜色各异的黄色陶瓷膜层。研究发现,膜层呈现出黄色主要是由于在膜层中生成了Mg₆MnO₈相,该物相在氧化膜中含量不同和分布差异将导致样品颜色深浅不同。更多还原

【Abstract】 With the rapid development of magnesium alloys in electric industry,the more advanced requirement of decorative property is given.How to color is studied during the process of micro-arc oxidation.Micro-arc oxidation ceramic（MAO） coating on AZ91 magnesium alloy is prepared in a silicate alkalinous solution（Na₂SiO₃ 5～30g/L, KMnO₄ 1～20g/L,NaOH 1～5g/L,KF 5～8g/L,Na₃C₆H₅O₇ 0.5～2g/L,EDTA 0.5～2g/L）.By adding KMnO₄ into the silicate alkalinous solution the coatings can take on all sorts of yellow effects.The results show that MAO coatings take on yellow effect depending on the phase of Mg₆MnO₈.The difference of Mg₆ MnO₈ content or distribution can lead to the difference of yellow depth.更多还原