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Study on Anodic Oxidation and Sealing of Aluminum Alloy

机译：铝合金的阳极氧化与密​​封研究

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摘要

Alumina films were prepared on the surfaces of 2024 aluminum alloy by the anodic oxidation, the sealing and the coloring methods. The films were studied via scanning electron microscopy, X-ray diffraction, the surface roughness, the indentation hardness, the abrasion resistance and the corrosion resistance tests. The results revealed that porous alumina was detected on the surface of the aluminum alloy samples after the anodic oxidation treatment and the amount of the pores decreased with the oxidation time. The anodic oxidation film became denser with the oxidation time and enhanced the corrosion resistance of 2024 aluminum alloy. The anodic oxidation process decreased the surface roughness of aluminum alloy. The samples’ hardness, abrasion resistance and corrosion resistance were increased by the sealing process for the anodic oxidation films. The combination procedure of anodic oxidation and sealing with boiling water improved the hardness and the abrasion resistance of the samples greatly.
机译：通过阳极氧化，密封和着色方法在2024铝合金表面制备了氧化铝膜。通过扫描电子显微镜，X射线衍射，表面粗糙度，压痕硬度，耐磨性和耐腐蚀性测试来研究膜。结果表明，在阳极氧化处理后的铝合金样品表面检测到多孔氧化铝，且孔的数量随氧化时间的延长而减少。阳极氧化膜随着氧化时间的增加而致密，增强了2024铝合金的耐蚀性。阳极氧化过程降低了铝合金的表面粗糙度。通过阳极氧化膜的密封处理，可以提高样品的硬度，耐磨性和耐腐蚀性。阳极氧化和用沸水密封的组合过程大大提高了样品的硬度和耐磨性。

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