Optimal Modes for the Fabrication of Aluminum Nanopowders by the Electrical Explosion of Wires

Abstract

The paper is aimed at studying the impact of initial conditions of electrical explosion of wires on energy characteristics of the explosion and some other properties of the obtained aluminum powders. Explosion modes where the energy input into the wire has the maximal level were found. These modes are optimal for fabrication of powders with the best properties. The powders have the highest value of the specific surface of 14.5 m 2 /g, a narrow histogram of the particle size distribution, and a narrow distribution histogram with a high polydispersity coefficient of 0.7.

MoS2@ZnO Nanoheterostructures Prepared by Electrospark Erosion for Photocatalytic Applications

“…Nanostructured MoS 2 was synthesized by a self-propagating high-temperature reaction using mixtures of molybdenum nanopowder and pure elemental sulfur (99.90%, ZAO “Soyuzhimprom”, Novosibirsk, Russia) [ 39 ]. Molybdenum nanopowder was prepared using the method of electrical explosion of wires in argon, described in [ 6 ]. A 0.25 mm diameter Mo wire (99.96%, OOO “GK “SMM”, Moscow, Russia) was used.…”

“…During recent decades, functional heterostructured metal oxide and sulfide materials received much interest from scientists working in the field of materials for photocatalytic applications [ 1 , 2 , 3 , 4 ]. Non-equilibrium fabrication methods like self-propagating high-temperature and mechanochemical synthesis, electrical explosion of wires, and electrospark erosion methods have displayed tremendous potential for synthesizing such materials [ 5 , 6 , 7 ]. These fabrication methods of such materials yielded structures that revealed high reactivity in various processes.…”

Thermal preparation and characterization of nanodispersed copper-containing powders produced by non-equilibrium electrochemical oxidation of metals

“…Metal oxides are the largest part of powdered nanomaterials. Among the methods to obtain functional metal oxide materials, those of special interest include non-equilibrium pathways, like self-propagating, high-temperature synthesis, mechanochemical, plasma-chemical syntheses, electrical explosion of wires, electrospark erosion method, and electrochemical methods [1][2][3][4][5][6]. It is due to the defective structure and high internal energy storage of such materials, which cause high reactivity to phase transformations of metal oxides and their use in various processes.…”