Physical and chemical aspects of the study of clusters, nanostructures and nanomaterials
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Processes of formation of nanodisperse Al2O3 powders with carbon in a dc electric arc

N.A. Alekseenko1, M.N. Kovalenko2, L.V. Markova1, A.P. Zajogin2

1 Powder Metallurgy Institute named after academician O.V. Roman
2 Belarusian State University

DOI: 10.26456/pcascnn/2020.12.758

Original article

Abstract: The nanodisperse Al2O3 powders formation with carbon in a DC electric arc under the influence of an arc discharge between an D16T aluminum alloy electrode and a carbon electrode in the air atmosphere are studied. The effect of the arc current on the plasma-arc synthesis of an aluminum-carbon material, a precursor for production of hollow Al2O3 nanoparticles, was studied. It is found that with an increase in the arc current from 4 to 14 A, the amount of product increases by almost an order of magnitude, despite competing dissociation processes with an increase in temperature from 5000 to 5500 К.

Keywords: Al2O3 , AlO  suboxides, DC electric arc, arc temperature, temperature of the area of formation of aluminum suboxides

  • Natalia A. Alekseenko – Head of the Research Laboratory of electronic probe analysis, Powder Metallurgy Institute named after academician O.V. Roman
  • Maxim N. Kovalenko – Head of the Research Laboratory «Spectroscopic systems», Faculty of Physics, Belarusian State University
  • Ludmila V. Markova – Head of the Department of Materials Research and Testing, Powder Metallurgy Institute named after academician O.V. Roman
  • Anatoli P. Zajogin – Dr. Sc., Full Professor, Professor of the Department of Laser Physics and Spectroscopy, Faculty of Physics, Belarusian State University

Reference:

Alekseenko, N.A. Processes of formation of nanodisperse Al2O3 powders with carbon in a dc electric arc / N.A. Alekseenko, M.N. Kovalenko, L.V. Markova, A.P. Zajogin // Physical and chemical aspects of the study of clusters, nanostructures and nanomaterials. – Tver: TSU, 2020. — I. 12. — P. 758-764. DOI: 10.26456/pcascnn/2020.12.758. (In Russian).

Full article (in Russian): download PDF file

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