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± 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.
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Karasev, V.V., Onishchuk, A.A., Glotov, O.G. et al. Charges and Fractal Properties of Nanoparticles — Combustion Products of Aluminum Agglomerates. Combustion, Explosion, and Shock Waves 37, 734–736 (2001). https://doi.org/10.1023/A:1012900819258
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DOI: https://doi.org/10.1023/A:1012900819258