LI Zhiqiang,WEI Hongyang,CHEN Dongchu*,et al.Effects of Power Parameters on Electrolytic Colouring of Colorful Composite Oxide Film on Aluminum Alloy Surface[J].Plating & Finishing,2022,(6):52-59.[doi:10.3969/j.issn.1001-3849.2022.06.011]
电源参数对铝合金表面复合氧化膜的多彩电解着色的影响规律研究
- Title:
- Effects of Power Parameters on Electrolytic Colouring of Colorful Composite Oxide Film on Aluminum Alloy Surface
- 分类号:
- TS913+.7
- 文献标志码:
- A
- 摘要:
- 铝合金表面多彩电解着色对兼顾其产品耐候性和装饰性具有重要意义。本研究依次通过在阳极氧化溶液中的阳极氧化步骤，电沉积液中的直流电解步骤、低压交流电解步骤、直流控色步骤和交流电沉积步骤制得了多彩色复合阳极氧化膜，并探究了工艺步骤对其显色的影响。结果表明：经阳极氧化步骤在铝合金基底生成第一层不影响显色的氧化膜；经低压交流电解步骤形成较薄且疏松决定彩色着色能否成功的第二层氧化膜；在直流控色步骤过程中形成控制颜色的第三层氧化膜，此步骤电解时间延长（ 40 ～ 160 s ）后，复合阳极氧化膜颜色呈现出从浅黄绿色向黄色、橙色、紫色、蓝色、绿色和黄绿色转变的规律；交流电沉积步骤在氧化膜孔底所沉积含 Sn 元素的金属粒子，可提高复合阳极氧化膜颜色的饱和度，进而呈现出亮丽的多彩色。本研究结果为后续进一步探究氧化膜的着色机理提供了理论依据。
- Abstract:
- ： The electrolytic colouring on aluminum alloy with multi-colour is of great significance for taking into account the weather resistance and decoration of its products. A composite anodic oxide film with multi-color was prepared by a anodization following by an electrolysis with direct current ， low voltage with alternating current ， color control with direct current and electrodeposition with alternating current in an electrodepositing solution ， and the influences of these process steps on color variation of the composite anodic oxide films were explored. The results showed that the first layer of the anodic oxide film was formed by anodization with the constant current without affecting the colouring tone. The second thin and leaky anodic oxide film was formed by electrolysis with low-voltage alternating current ， which determined whether the colours of anodic oxide films would be appeared. The third anodic oxide film was formed by electrolysis with direct-current. In this step ， with the extension of the electrolysis time （ 40 - 160 s ）， the colour of the anodic oxide film varied from light yellow-green to yellow ， orange ， purple ， blue ， green and yellow-green. The Sn-containing compounds were deposited on the bottom of the holes in anodic oxide film ， which increased the colour saturation of the anodic oxide film and presented bright multi-colours. The results of this study provided a theoretical basis for further exploration of the colouring mechanism of the anodic oxide film.
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备注/Memo
收稿日期： 2021-02-20 修回日期： 2021-05-31 作者简介： 李志强（ 1993 —），男，博士在读， email ： lizq9312@163.com 通信作者： 陈东初（ 1972 —），男，博士，教授， email ： Chendc@fosu.edu.cn 基金项目： 国家自然科学基金项目（ 21671038 ）；广东省基础与应用基础研究基金项目（ 2020B1515120093 ）；江西省重点研发计划项目（ 20201BBE51009 ）