Analysis of nanopore arrangement and structural features of anodic alumina layers formed by two-step anodizing in oxalic acid using the dedicated executable software

摘要

Anodic porous alumina layers were fabricated\udby a two-step self-organized anodization in 0.3 M oxalic\udacid under various anodizing potentials ranging from 30 to\ud60 V at two different temperatures (10 and 17\ud◦\udC). The ef-\udfect of anodizing conditions on structural features and pore\udarrangement of AAO was investigated in detail by using\udthe dedicated executable publication combined with ImageJ\udsoftware. With increasing anodizing potential, a linear in-\udcrease of the average pore diameter, interpore distance, wall\udthickness and barrier layer thickness, as well as a decrease of\udthe pore density, were observed. In addition, the higher pore\uddiameter and porosity values were obtained for samples an-\udodized at the elevated temperature, independently of the an-\udodizing potential. A degree of pore order was investigated on\udthe basis of Delaunay triangulations (defect maps) and cal-\udculation of pair distribution or angle distribution functions\ud(PDF or ADF), respectively. All methods confirmed that in\udorder to obtain nanoporous alumina with the best, hexag-\udonal pore arrangement, the potential of 40 V should be ap-\udplied during anodization. It was confirmed that the dedicated\udexecutable publication can be used to a fast and complex analysis of nanopore arrangement and structural features of\udnanoporous oxide layers.