Autors: Chernyakova K., Tzaneva, B. R., Vrublevsky I., Videkov, V. H.
Title: Effect of aluminum anode temperature on growth rate and structure of nanoporous anodic alumina
Keywords: Nanoporous anodic alumina; Surface morphology;Electrolyte te

Abstract: In the present study, we investigated the effect of an anode temperature on current transient process during porous anodic alumina growth and morphology of the anodic layers. Alumina films were formed in a 0.4 M oxalic acid at a constant voltage mode and electrolyte temperature. The temperature of the Al anode was controlled by thermoelectric Peltier element and varied in the range of 5-60 ⁰C. Surface morphology of both sides of anodic films and their cross-sections were analyzed by scanning electron microscopy (SEM) with subsequent statistical analysis of the SEM images by ImageJ software. It was found that when anode temperature was increased from 5 to 50 °С the pores diameter and interpore distance has not changed, but the porous structure became more ordered. According to these results, the rate of chemical dissolution of the barrier layer and pore walls did not depend on the anode temperature. At the anode temperature of 60 °С, pores diameter has increased 1.7 times and ..

References

    Issue

    Journal of the Electrochemical Society, vol. 167, pp. 103506 (6 pages), 2020, United States, Electrochemical Society, Inc./ IOP Science, ISBN ISSN:0013-4651; E-ISSN:1945-7111

    Copyright Institute of Physics Publishing

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    Вид: статия в списание, публикация в издание с импакт фактор, публикация в реферирано издание, индексирана в Scopus и Web of Science