[1]胡 昊,刘泽恩,王梅丰*,等.doi: 10.3969/j.issn.1001-3849.2025.11.0012024-T3铝合金酸性无铬脱氧工艺研究[J].电镀与精饰,2025,(11):1-9.
　Hu Hao,Liu Zeen,Wang Meifeng*,et al.Research on the acidic chromium-free deoxidation process for 2024-T3 aluminum alloy[J].Plating & Finishing,2025,(11):1-9.
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doi: 10.3969/j.issn.1001-3849.2025.11.0012024-T3铝合金酸性无铬脱氧工艺研究()

《电镀与精饰》[ISSN:1001-3849/CN:12-1096/TG]

卷:
期数:
2025年11
页码:
1-9
栏目:
出版日期:
2025-11-30

文章信息/Info

Title:
Research on the acidic chromium-free deoxidation process for 2024-T3 aluminum alloy
作者:
胡 昊; 刘泽恩; 王梅丰*; 李嘉烁
(南昌航空大学 材料科学与工程学院,江西 南昌 330063)
Author(s):
Hu Hao;  Liu Zeen;  Wang Meifeng*;  Li Jiashuo
(School of Materials Science and Engineering, Nanchang Hangkong University, Nanchang 330063, China)
关键词:
无铬脱氧; 2024-T3铝合金; 盐雾实验; 铝合金前处理
Keywords:
chromium free deoxidation;  2024-T3 aluminum alloy;  salt spray test;  aluminium alloy pretreatment
分类号:
TG174.4
文献标志码:
A
摘要:
为解决2024-T3铝合金传统三酸脱氧液中Cr6+对环境的严重危害，本文开发了一种2024-T3铝合金酸性无铬脱氧工艺。借助正交试验对该脱氧工艺处理后的铝合金表面粗糙度、形貌等进行分析，得到最佳脱氧工艺参数为：45 g/L硫酸铁、250 mL/L硝酸、缓蚀剂3 g/L、整平剂0.25 g/L、氟化钠4 g/L，脱氧温度30 ℃，脱氧时间3min。该工艺可有效去除铝合金表面天然氧化膜和合金元素，对该脱氧处理后的试样进行阳极氧化及沸水封闭处理后，膜层电化学电荷转移电阻(Rct)为3.287 3×105 Ω·cm2，中性盐雾试验时长为408 h。
Abstract:
To address the severe environmental hazards posed by Cr6+ in the traditional three-acid deoxidizing solution for 2024-T3 aluminum alloy, this paper developed an acidic chromium-free deoxidizing process for 2024-T3 aluminum alloy. Through orthogonal experiments, the surface roughness and morphology of the aluminum alloy treated by this deoxidizing process were analyzed, and the optimal deoxidizing process parameters were obtained: 45 g/L ferric sulfate, 250 mL/L nitric acid, 3 g/L corrosion inhibitor, 0.25 g/L leveling agent, 4 g/L sodium fluoride, deoxidizing temperature of 30 ℃, and deoxidizing time of 3 min. This process can effectively remove the natural oxide film and alloy elements on the surface of the aluminum alloy. After anodic oxidation and boiling water sealing treatment of the aluminum alloy treated by this process, the charge transfer resistance ( Rct) of the film layer measured by electrochemical alternating current impedance was 3.2873×105 Ω·cm2, and the duration of the neutral salt spray test was 408 h

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相似文献/References:

[1]刘泽恩,马建强,王梅丰,等.doi: 10.3969/j.issn.1001-3849.2025.01.0122024-T3铝合金环境友好型脱氧工艺研究[J].电镀与精饰,2025,(01):73.
　Liu Zeen,Ma Jianqiang,Wang Meifeng*,et al.Experimental study of environmental protection deoxidation process for 2024-T3 aluminum alloy[J].Plating & Finishing,2025,(11):73.

更新日期/Last Update: 2025-11-20