文档介绍：Combustion, Explosion, and Shock Waves, Vol. 37, No. 6, pp. 734–736, 2001
MUNICATION
Charges and Fractal Properties of Nanoparticles — Combustion
Products of Aluminum Agglomerates
V. V. Karasev,1 A. A. Onishchuk,1 O. G. Glotov,1 UDC
A. M. Baklanov,1 V. E. Zarko,1 V. N. Panfilov1
Translated from Fizika Goreniya i Vzryva, Vol. 37, No. 6, pp. 133–135, November–December, 2001.
Original article submitted; revision submitted August 3, 2001.
The disperse, structural, and electrophysical characteristics of fine alumina produced
bustion 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 ± 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, ., they are dipoles.
According to current concepts [1, 2], fine alumina EXPERIMENTAL TECHNIQUE
is formed in bustion of liquid aluminum drops
by “chemical” condensation in t