ZHOU Yanli*.周艳丽*[J].Plating & Finishing,2021,(2):34-37.[doi:10.3969/j.issn.1001-3849.2021.02.0070]
5052铝合金草酸阳极氧化和铬酸阳极氧化工艺研究
- Title:
- 周艳丽*
- 文献标志码:
- A
- 摘要:
- 为改善5052铝合金的耐腐蚀性能,对其进行阳极氧化处理。分别采用草酸阳极氧化和铬酸阳极氧化工艺,在5052铝合金试样表面制备了两种阳极氧化膜。比较了草酸阳极氧化膜和铬酸阳极氧化膜的厚度、形貌和耐腐蚀性能。结果表明:两种阳极氧化膜的厚度比较接近,都是20 μm左右;草酸阳极氧化膜呈浅灰色,表面粗糙度约为0.170 μm,铬酸阳极氧化膜呈银白色,表面粗糙度约为0.185 μm。两种阳极氧化膜的耐腐蚀性能都优于5052铝合金试样,耐腐蚀性能排序为:草酸阳极氧化膜>铬酸阳极氧化膜>5052铝合金试样。
- Abstract:
- Anodic oxidation was conducted to improve the corrosion resistance of 5052 aluminum alloy. Two kinds of anodic oxidation films were prepared on the surface of 5052 aluminum alloy by oxalic acid anodic oxidation and chromic acid anodic oxidation, respectively. The thickness, morphology and corrosion resistance of oxalic acid anodic oxidation film and chromic acid anodic oxidation film were compared. The results showed that the thickness of two kinds of anodic oxidation films was very close (about 20 μm). Oxalic acid anodic oxidation film was light gray with a surface roughness of about 0.170 μm, while chromic acid anodic oxidation film was silver-white with a surface roughness of about 0.185 μm. The corrosion resistance of two kinds of anodic oxidation films was better than that of 5052 aluminum alloy samples, and the corrosion resistance ranked as follows: oxalic acid anodic oxidation film > chromic acid anodic oxidation film >5052 aluminum alloy sample.
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备注/Memo
收稿日期: 2020-01-21;修回日期: 2020-03-25
作者简介: 周艳丽(1970—),河南南阳人,本科,副教授,主要研究方向:机械材料、机电技术等。email: zhou0030henan@163.com
基金项目: 河南省高等学校重点科研项目(20A120007)