Preparation of alumina and alumina-silica powders by wire explosion resulting from electric discharge

Generation and characterization of nano-tungsten particles formed by wire explosion process

“…Recently, Tokoi et al [18] produced nano TiO 2 powder by depositing energy of about 50 times the sublimation energy, to produce particles of lower dimension. Umakoshi et al [19] generated nano alumina powder and they have concluded that increase in energy deposited to the exploding conductor reduces the size of the particle. Ter-Oganesyan et al [20] carried out tungsten wire explosion in air and water media by applying depositing energy to the conductor of twice its sublimation energy and concluded that since critical temperature of tungsten conductor is high heating of conductor occurs continuously and the conductance of the inter electrode gap filled with partially ionised vapour and the current flow in the circuit does not drop to zero.…”

Preparation of Conductive Nanoink Using Pulsed-Wire-Evaporated Copper Nanoparticles for Inkjet Printing

“…Nano-sized powders fabricated by this technique have been mainly used in powder metallurgy. M. Umakoshi et al 20) used PWE to explode a metal or alloy wire by passing a high impulse of current through it. The wire, heated to its boiling point, becomes vaporized.…”

“…Fine metallic droplets form, and vapors can be condensed into nano-sized powders. 20) This approach thus produces nano-scale particles in an eco-friendly way where it does not produce any chemical toxic wastes compared to other conventional chemical synthesis of powders. Moreover, PWE method has its yield of 80% which is pretty high compared to the competing wet methods.…”

Microstructure of Ti-Cr Nanoparticles Prepared by Electrical Wire Explosion

“…[1][2][3][4] In pure single crystal titanium, the -Ti (HCP) is transformed to -Ti (BCC) at 882 C. Chromium is a beta stabilizer that depresses the transformation temperature and exhibits low alpha phase solubility (Fig. 1).…”