Generation and characterization of nano aluminium powder obtained through wire explosion process

Abstract

In the present study, nano aluminium particles were produced by wire explosion process (WEP) in nitrogen, argon and helium atmospheres. Thus produced nano particles were characterized through certain physico-chemical diagnostic studies using wide angle X-ray diffraction (WAXD) and by energy dispersive analysis by X-rays (EDAX). The size and shape of the powder were analysed by using transmission electron microscopic (TEM) studies. The particle size distribution studies were performed by adopting log-normal probability distribution. The relationship between size of the particle generated in the explosion process and the type of inert gas/pressure was analysed. The mechanisms of nano particle formation, the factors which can aid the process of formation of nano particle in the wire explosion process were analysed. It is realized that energy deposited to the conductor and duration of current flow have major impact on particles produced by this process.

Accumulation of nano-aluminium during combustion of composite solid propellant mixtures

“…Ivanov et al [3] reported the production of particles of a smaller size, in the 30-50 nm range, by a similar technique. Similarly, Sarathi et al [4,5] and Sindhu et al [6] also reported the production and process control of nano-aluminium powders in combinations of inert media to obtain particles with the peak size in the 20-55 nm range at our laboratory.…”

Voltammetry of Aluminum Nanoparticles in Aqueous Media with Hanging Mercury Drop Electrode

“…The aluminum nanopowder (ANP) sample was prepared at the High Voltage Research Institute of the Tomsk Polytechnic University by the method of electric explosion of wires [18,5] vation in argon-air mixture the sample was kept in closed flasks in ambient conditions. Characterization of ANP was carried out by physical and physico-chemical methods including scanning electron microscopy (Hitachi S-4800 equipped with EDX-analyzer), high resolution electron microscopy (JEOL JEM-3010), Xray diffraction (Shimadzu XRD 6000, Cu Ka -radiation), infrared spectroscopy (FTIR Nicolet-5700), particle size distribution was determined by means of Nanosizer ZS (Malvern Instruments) in ethyleneglycol medium at 25 8C.…”

“…Aluminum nanoparticles are the object of intense interest for use as a component in propellants [1,2] or in composite materials [3], their application is prospective in hydrogen power engineering [4]; other papers deal, e.g., with their physico-chemical properties [5,6], with their biological applications [7,8] or with their undesirable environmental effects [9]. High chemical activity of Al nanoparticles is caused by their small size and by their metastable structure [10].…”

A Review of Methods for Synthesis of Al Nanoparticles

“…The relationship between size of the particle generated in the explosion process and the type of inert gas/pressure was analysed. It is realized that energy deposited to the conductor and duration of current flow have major impact on particles produced by this process 39 . In 2012, an experimental device based on the electrical explosion of metallic wires for the nanopowders production and collection was designed and built.…”