[1]常智红,任伟和,梁成成.doi: 10.3969/j.issn.1001-3849.2025.06.006活塞杆用2A12铝合金硫酸-柠檬酸硬质阳极氧化及性能研究[J].电镀与精饰,2025,(06):35-43.
　Chang Zhihong*,Ren Weihe,Liang Chengcheng.Study on hard anodizing and properties of 2A12 aluminum alloy for piston rod[J].Plating & Finishing,2025,(06):35-43.
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doi: 10.3969/j.issn.1001-3849.2025.06.006活塞杆用2A12铝合金硫酸-柠檬酸硬质阳极氧化及性能研究()

《电镀与精饰》[ISSN:1001-3849/CN:12-1096/TG]

卷:
期数:
2025年06
页码:
35-43
栏目:
出版日期:
2025-06-30

文章信息/Info

Title:
Study on hard anodizing and properties of 2A12 aluminum alloy for piston rod
作者:
常智红1; 任伟和2; 梁成成1
(1. 山西工程职业学院 机械工程系,山西 太原 030009 ;2. 河北工程技术学院 土木与建筑学院,河北 石家庄 050091)
Author(s):
Chang Zhihong1*;  Ren Weihe2;  Liang Chengcheng1
(1. Department of Mechanical Engineering, Shanxi Engineering Vocational College, Taiyuan 030009, China; 2. School of Civil Engineering and Architecture, Hebei Polytechnic Institute, Shijiazhuang 050091, China)
关键词:
硬质阳极氧化; 2A12铝合金; 硫酸-柠檬酸混合电解液; 耐腐蚀性能; 抗磨损性能
Keywords:
hard anodizing;  2A12 aluminum alloy;  sulfuric acid and citric acid mixed electrolyte;  corrosion resistance;  anti-wear performance
分类号:
TQ153
文献标志码:
A
摘要:
将柠檬酸添加到硫酸中配制混合酸电解液，对制造活塞杆常用的2A12铝合金进行硬质阳极氧化，并研究柠檬酸添加量对硬质氧化膜的物相、厚度、耐腐蚀性能、硬度以及耐磨性能的影响。结果表明：随着柠檬酸添加量从0 g/L增加到100 g/L，硬质氧化膜的形貌特征发生明显变化，厚度先增加后降低，硬度先增大后减小，耐腐蚀性能和耐磨性能均先变好后变差。但柠檬酸添加量对硬质氧化膜的物相无影响。当柠檬酸添加量为70 g/L，采用混合酸电解液制备的硬质氧化膜表面无裂纹、致密性较好，其厚度超过43 μm并且硬度达到480.8 HV，较2A12铝合金提高约290 HV。该硬质氧化膜还具有良好的耐腐蚀性能和耐磨性能，对2A12铝合金起到理想的表面强化效果。
Abstract:
2A12 aluminum alloy commonly used in the manufacture of piston rods was hard anodized in the mixed acid electrolyte prepared by adding citric acid to sulfuric acid, and the effect of the addition amount of citric acid on the phase, thickness, corrosion resistance, hardness and wear resistance of the hard oxide film was studied. The results show that with the increase of addition amount of citric acid from 0 g/L to 100 g/L, the morphology characteristics of the hard oxide film changes obviously, the thickness and hardness increases first and then decreases, and the corrosion resistance and wear resistance improved first and then deteriorated. However, the addition amount of citric acid has no effect on the phase of the hard oxide film. When the addition amount of citric acid is 70 g/L, the hard oxide film prepared with mixed acid electrolyte has no cracks on the surface and good compactness. Its thickness exceeds 43 μm and the hardness reaches 480.8 HV, which is about 290 HV higher than that of 2A12 aluminum alloy. The hard oxide film also has excellent corrosion resistance and wear resistance, and it can play an ideal surface strengthening effect on 2A12 aluminum alloy

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更新日期/Last Update: 2025-06-18