Thermal influence on the electroluminescence kinetics of aluminum and tantalum in their anodization in distilled water

Authors

  • Ovechenko D.S. Kuban State University, Krasnodar, Российская Федерация
  • Boychenko A.P. Kuban State University, Krasnodar, Российская Федерация

UDC

535.37+541.1382

DOI:

https://doi.org/10.31429/vestnik-16-2-59-67

Abstract

For example, metals from Al and Ta, anodized at a voltage of 1.2 kV in pure distilled water (DW) with an initial electrical conductivity of 1.7·10-4S/m, for the first time, the possibilities of generating electroluminescence (EL) and the studied kinetics of its luminosity change are available in terms of thermal stabilization and thermal effect of current flow (joule heating). At the same time, a significant influence of the latter conditions on the kinetic and other characteristics of EL for both metals and the morphology formed on them of oxide films, as well as on the electrical conductivity of the DW, was established. Under conditions of thermal stabilization, the change in the initial value is 42·10-4 S/m for the Al anode and 141·10-4 S/m for the anode from Ta, and the thermal stabilization is the change in the value of this parameter for the listed Me 71·10-4 S/m and 9·10-4 S/m, respectively. The induced current flow through the DW changes the temperature leads to the formation of a more disordered structure of oxide films in Al and Ta. In addition, in a number of metal anodes, such as Pt, Pd, Ir, Rh, Sn, Cu, Ag, Cr, and Mo, at a voltage of even 2 kV in the DW, no light emission was detected, despite the formation of the last three metals noticeable film anodizing products.

Keywords:

anodization, aluminum, tantalum, distilled water, electroluminescence, thermal influence

Author Infos

Dmitriy S. Ovechenko

аспирант кафедры оптоэлектроники Кубанского государственного университета

e-mail: bojchenco@yandex.ru

Aleksandr P. Boychenko

д-р физ-мат наук, доцент, доцент кафедры оптоэлектроники Кубанского государственного университета

e-mail: bojchenco@yandex.ru

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Issue

2019. Vol. 16. No. 2

Section

Physics

Pages

59-67

Submitted

2019-03-28

Published

2019-06-28

How to Cite

Ovechenko D.S., Boychenko A.P. Thermal influence on the electroluminescence kinetics of aluminum and tantalum in their anodization in distilled water. Ecological Bulletin of Research Centers of the Black Sea Economic Cooperation, 2019, vol. 16, no. 2, pp. 59-67. DOI: https://doi.org/10.31429/vestnik-16-2-59-67 (In Russian)

Copyright (c) 2019 Ovechenko D.S., Boychenko A.P.

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