This article is cited in 14 papers

Urgent communication

Charges and fractal properties of nanoparticles – combustion products of aluminum agglomerates

V. V. Karasev, A. A. Onischuk, O. G. Glotov, A. M. Baklanov, V. E. Zarko, V. N. Panfilov

Institute of Chemical Kinetics and Combustion, Siberian Division, Russian Academy of Sciences, Novosibirsk, 630090

Abstract: The disperse, structural, and electrophysical characteristics of fine alumina produced by combustion of metal droplet agglomerates were studied experimentally. Data were obtained by transmission electron microscopy and video recording of aerosol particles moving in a homogeneous electric field. The aerosol particles are aggregates with sizes ranging from a fraction of a micrometer to a few micrometers and a fractal dimension of 1.60 $\pm$ 0.04 which consist of primary particles with sizes of a few to hundred nanometers. Most of the aggregates have electric charges, both positive and negative. The characteristic charge of the aggregates is equal to a few units of elementary charge. Some large aggregates rotate when the electric field polarity changes, i.e., they are dipoles.

UDC: 536.46

Received: 03.08.2001

 English version: Combustion, Explosion and Shock Waves, 2001, 37:6, 734–736

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