Anodic Alumina Films Prepared by Powerful Pulsed Discharge Oxidation
authors Lisenkov, AD; Salak, AN; Poznyak, SK; Zheludkevich, ML; Ferreira, MGS
nationality International
journal JOURNAL OF PHYSICAL CHEMISTRY C
keywords SCANNING KELVIN PROBE; FORCE MICROSCOPY; OXIDE-FILMS; CORROSION; POLARIZATION; MECHANISMS; KINETICS; COATINGS; BEHAVIOR; AA2024
abstract A novel powerful pulsed discharge anodization technique has been applied to prepare dense, homogeneous oxide films of 16-180 nm thick on aluminum surface. The Volta potential difference (VPD) of the obtained films was studied by scanning Kelvin probe force microscopy. The VPD value was measured as a function of the film thickness and was compared with the similar dependences for the anodic alumina films prepared by the conventional galvanostatic and potentiostatic methods. The anodic films present polarization because of the embedded charges localized near the film interfaces. It was shown that despite the apparent differences in the respective anodization processes, the pulsed discharge films demonstrate the magnitude of polarization which is entirely comparable with that of the conventional anodic alumina films of the same thickness. At the same time, the pulsed discharge films are characterized by more uniform surface structure and electrical properties. The characteristic features of the films such as their fast growth and homogeneity have been considered in terms of the processes occurring at the powerful pulsed discharge.
publisher AMER CHEMICAL SOC
issn 1932-7447
year published 2011
volume 115
issue 38
beginning page 18634
ending page 18639
digital object identifier (doi) 10.1021/jp2050542
web of science category Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary
subject category Chemistry; Science & Technology - Other Topics; Materials Science
unique article identifier WOS:000295058100030
  ciceco authors
  impact metrics
journal analysis (jcr 2017):
journal impact factor 4.484
5 year journal impact factor 4.691
category normalized journal impact factor percentile 73.464
dimensions (citation analysis):
altmetrics (social interaction):



 


Apoio

1suponsers_list_ciceco.jpg