Abstract It is said that plasma electrolytic oxidation (PEO) is considered as an effective technique to boost the surface properties of light materials by means of forming ceramic films on their surfaces. In this study, three different voltage values were applied to the PEO process to AA2024 so that Al2O3 ceramic coatings were directly supplied for AA 2024 substrates by PEO and it is focused on the adhesion of interface between coating and substrate. All of the cases such as microstructure, phase composition, thickness, roughness and hardness of Al2O3 ceramic coatings were assayed by X-ray diffraction (XRD), scanning electron microscopy (SEM), Atomic-force microscopy (AFM), Eddy Current Non-destructive testing and microhardness test, respectively. The results showed that roughness, hardness and thickness of the coatings were increased as we increased the voltage. Therefore, it could be claimed that the voltage parameters have an important role in the unified coating on the metal surface as it is directly connected with the morphologies of the PEO coating.

中文翻译：

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电压对等离子电解氧化 AA2024 上 Al2O3 陶瓷涂层表面完整性组分的影响

摘要 等离子体电解氧化（PEO）被认为是一种通过在轻质材料表面形成陶瓷薄膜来提高其表面性能的有效技术。在这项研究中，将三种不同的电压值施加到 AA2024 的 PEO 工艺中，以便通过 PEO 直接为 AA 2024 基材提供 Al2O3 陶瓷涂层，并且重点是涂层和基材之间界面的附着力。通过X射线衍射（XRD）、扫描电子显微镜（SEM）、原子力显微镜（AFM）、涡流非晶态分析等手段对Al2O3陶瓷涂层的微观结构、相组成、厚度、粗糙度和硬度等所有情况进行了分析。破坏性试验和显微硬度试验。结果表明，粗糙度、随着电压的增加，涂层的硬度和厚度也增加了。因此，可以说电压参数在金属表面的统一涂层中具有重要作用，因为它与 PEO 涂层的形态直接相关。