The influences of different pre-treatment approaches, comprising sandblasting, grinding, chemical polishing, and plowing, and various anodizing parameters, including electrolyte composition, temperature, current density, time, and final voltage, on the quality of anodized aluminum oxide (AAO) film on AA 6061 were studied in the present research. It was found that, during both mild and hard anodization treatment, the thickness and microhardness of AAO film increased as the anodization current density increased. Under mild anodization treatment, when the current density increased from 0.5 to 2.0 A/dm², the anodization efficiency decreased from 90 to 52% and 71 to 44% during the mild anodization treatment performed at 22°C and 0°C, respectively. However, on the other hand, the anodization efficiency increased from 55 to 56% and 57 to 64% when the current density increased from 7.0 to 8.0 A/dm² during the hard anodization treatment carried out at 22°C and 0°C, respectively. Therefore, different AAO film formation mechanisms prevail during the mild and hard anodization treatment. Moreover, the microhardness of AAO film formed at 22°C or 0°C dropped heavily when the current density was higher than 9.0 A/dm² due to the burning reaction. In addition, the AAO film can achieve higher hardness and resistance to corrosion through the sealing process, which can effectively decrease the size of the tubes due to the volume expansion effect (23%) after the sealing treatment.

不同的预处理方法，包括喷砂、研磨、化学抛光和犁耕，以及各种阳极氧化参数，包括电解液成分、温度、电流密度、时间和最终电压，对阳极氧化铝 (AAO) 质量的影响本研究对AA 6061上的薄膜进行了研究。结果表明，在轻度和硬质阳极氧化处理过程中，AAO 膜的厚度和显微硬度都随着阳极氧化电流密度的增加而增加。在轻度阳极氧化处理下，当电流密度从 0.5 增加到 2.0 A/dm ^{2 时}，在 22°C 和 0°C 下进行的温和阳极氧化处理期间，阳极氧化效率分别从 90% 降至 52% 和 71% 至 44%。然而，另一方面，在 22°C 和 0°C 进行硬质阳极氧化处理期间，当电流密度从 7.0 A/dm ²增加到 8.0 A/dm ²时，阳极氧化效率从 55% 增加到 56% 和 57% 到 64% ，分别。因此，在轻度和硬性阳极氧化处理过程中存在不同的 AAO 成膜机制。此外，当电流密度高于 9.0 A/dm ²时，在 22°C 或 0°C 下形成的 AAO 膜的显微硬度大幅下降由于燃烧反应。此外，AAO薄膜通过密封工艺可以获得更高的硬度和耐腐蚀性，由于密封处理后的体积膨胀效应（23%），可以有效地减小管子的尺寸。