Glow of Metals during Anodization in Distilled Water

Ovechenko, D. S.; Boychenko, A. P.

doi:10.1134/s1063785019050250

Cited by 4 publications

(1 citation statement)

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“…As a rule, Al2O3 of the aforementioned structure is formed in aqueous solutions of various electrolytes (acids, alkalis, salts or their combinations) in the galvanic or potentiostatic mode [5][6][7]. Since 1962, the possibility of electrolysis of the formation of an oxide film in chemically pure water was demonstrated by the authors on the example of Si n-and p-types [8], and in 2019 under the same anodizing conditions on the example of Ti, W, In, Ga, Nb, Al, Ta, including Si, we detected their electro-generated luminescence (EL) [9,10]. Further studies showed that this phenomenon is directly related not only to the presence of oxide films of certain thicknesses, but also to the morphology of their structure, which changes during electrolysis, and thus affects the EL brightness.…”

Section: Introductionmentioning

confidence: 99%

Transformation of the Nanoporous Structure of Anodic Aluminium Oxide and its “Nonelectrolysis” Electroluminescence

Ovechenko

Boychenko

2020

SSP

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On a film of aluminum oxide (Al2O3) formed by electrolytic oxidation in distilled water (DW), the growth, transformation of its nanoporous structure, and the generation of electroluminescence (EL) in ketones and related compounds containing carbonyl groups were studied. For those contributing to the brightest EL – acetylacetone and methylpyrrolidone, it was found that the processes described in these electrolytes proceed with the highest intensity. Under the same electrolytes and conditions, similar processes, but with a lower intensity, proceed for A2O3 formed on pure aluminum. It was found that, with the external voltage, thermodynamic and geometrical parameters of the electrolytic system being constant, the brightness characteristics of the EL of the anodic Al2O3 are influenced by its structural organization and the electrophysical characteristics of the electrolyte surrounding the oxide film, which is proposed to be arbitrarily called “nonelectrolysis” because electrolysis products are not revealed in it.

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