[1]成张佳宁,黄坤坤.纳米La2O3颗粒对建筑铝合金表面阳极氧化膜性能的影响[J].电镀与精饰,2023,(2):20-26.[doi:10.3969/j.issn.1001-3849.2023.02.004]
　Cheng Zhangjianing ? Huang Kunkun.Influence of nano-La 2 O 3 particles on performance of anodic oxide films on aluminum alloy for construction[J].Plating & Finishing,2023,(2):20-26.[doi:10.3969/j.issn.1001-3849.2023.02.004]
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纳米La2O3颗粒对建筑铝合金表面阳极氧化膜性能的影响
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《电镀与精饰》[ISSN:1001-3849/CN:12-1096/TG]

卷:
期数:
2023年2
页码:
20-26
栏目:
出版日期:
2023-02-15

文章信息/Info

Title:
Influence of nano-La 2 O 3 particles on performance of anodic oxide films on aluminum alloy for construction
作者:
（1.同济大学 土木工程学院，上海 200092； 2.南通居者安建筑科学研究院有限公司，江苏 南通 226019）
Author(s):
Cheng Zhangjianing1 2? Huang Kunkun2
（1.College of Civil Engineering， Tongji University， Shanghai 200092， China； 2.Nantong Juzhean Architectural Research Institute Co.， Ltd.， Nantong 226019， China）
关键词:
阳极氧化膜; 纳米 La 2 O 3 颗粒; 掺杂; 表面润湿性; 耐蚀性
Keywords:
anodic oxide film ;  nano-La 2 O 3 particles ;  doping ;  surface wettability ;  corrosion resistance
分类号:
TQ153.6
DOI:
10.3969/j.issn.1001-3849.2023.02.004
文献标志码:
A
摘要:
以建筑行业常用的 6463 铝合金作为基材进行阳极氧化，通过共沉积技术使纳米 La 2 O 3 颗粒掺杂在阳极氧化膜中，进一步提高其耐蚀性。研究了纳米 La 2 O 3 颗粒添加浓度对阳极氧化膜的形貌、孔隙率、成分、表面润湿性和耐蚀性的影响。结果表明：不加纳米 La 2 O 3 颗粒时，阳极氧化膜不致密且孔隙率较高，表面呈亲水性，耐蚀性相对较差。适量的纳米 La 2 O 3 颗粒参与成膜过程，使阳极氧化膜的致密性逐步提高，孔隙率降低且成分发生变化，表面由亲水性转变为疏水性，耐蚀性明显提高。当纳米 La 2 O 3 颗粒浓度为 2.2 g/L 时，阳极氧化膜的孔隙率仅为 14.2 % ， La 2 O 3 颗粒含量接近 2.60 % ，表面致密且呈良好的疏水性，其腐蚀电流密度较 6463 铝合金降低了接近两个数量级，腐蚀失重仅为 1.39 g/m 2 ，可以为 6463 铝合金提供更好的防护作用。
Abstract:
： The 6463 aluminum alloy commonly used in the construction industry was anodized as substrate ， and nano-La 2 O 3 particles were doped in the anodic oxide films by co-deposition technology to further improve its corrosion resistance. The influence of the concentration of nano-La 2 O 3 particles on the morphology ， porosity ， components ， surface wettability and corrosion resistance of the anodic o xide films was studied. The results show that the anodic oxide film is loosen with a relatively high porosity ， the surface is hydrophilic and the corrosion resistance is relatively poor when the nano-La 2 O 3 particles are not added. Appropriate amount of nano-La 2 O 3 particles participate in the film formation process to gradually increase the compactness of the anodic oxide film ， reduce the porosity and change the components. Moreover ， the surface wettability changes from hydrophilic to hydrophobic ， and the corrosion resistance is significantly improved. When the concentration of nano-La 2 O 3 particles is 2 .2 g/L ， the porosity of anodized film is only 14.2 % ， the content of La 2 O 3 particles is close to 2.60 % ， and the surface is compact and has good hydrophobicity. The corrosion current density decreases by nearly two orders of magnitude compared with 6463 aluminum alloy ， and the corrosion weight loss is only 1.39 g/m 2 ， indicating that the anodic oxide film can provide better protection for 6463 aluminum alloy.

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备注/Memo

备注/Memo:
收稿日期： 2021-12-18 修回日期： 2022-02-14 作者简介： 成张佳宁（ 1993 —），女，博士，高级工程师，主要研究方向：建筑结构材料、腐蚀防护。 email ： 776746576@qq.com 基金项目： 住房和城乡建设部科技计划项目（ K42014159 ）?/html>
更新日期/Last Update: 2023-02-08