It has been reported that the size and shape of the pores depend on the structure of the base metal, the type of electrolyte, and the conditions of the anodizing process. The paper presents thin Al2O3 oxide layer formed under hard anodizing conditions on a plate made of EN AW-5251 aluminum alloy. The oxidation of the ceramic layer was carried out for 40–80 minutes in a three-component SAS electrolyte (aqueous solution of acids: sulphuric 33 ml/l, adipic 67 g/l, and oxalic 30 g/l) at a temperature of 293–313 K, and the current density was 200–400 A/m2. Presented images were taken by a scanning microscope. A computer analysis of the binary images of layers showed different shapes of pores. The structure of ceramic Al2O3 layers is one of the main factors determining mechanical properties. The resistance to wear of specimen-oxide coating layer depends on porosity, morphology, and roughness of the ceramic layer surface. A 3D oxide coating model, based on the computer analysis of images from a scanning electron microscope (Philips XL 30 ESEM/EDAX), was proposed.

中文翻译：

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使用扫描显微镜分析 Al2O3 纳米结构

据报道，孔的大小和形状取决于母材的结构、电解质的类型和阳极氧化过程的条件。本文介绍了在硬阳极氧化条件下在 EN AW-5251 铝合金板上形成的薄 Al2O3 氧化物层。陶瓷层的氧化在三组分 SAS 电解质（酸的水溶液：硫酸 33 ml/l、己二酸 67 g/l 和草酸 30 g/l）中进行 40-80 分钟，温度为293–313 K，电流密度为 200–400 A/m2。呈现的图像是由扫描显微镜拍摄的。层的二进制图像的计算机分析显示了不同形状的孔。陶瓷Al2O3层的结构是决定机械性能的主要因素之一。试样氧化物涂层的耐磨性取决于陶瓷层表面的孔隙率、形态和粗糙度。提出了一种基于对扫描电子显微镜 (Philips XL 30 ESEM/EDAX) 图像进行计算机分析的 3D 氧化物涂层模型。