Electrical explosion of wires (EEW) is a method for production of nanopowders. Depending on type of chemical composition of working ambient in the discharge chamber nanopowders of carbides can be produced (EEW in hydrocarbons) or nanopowders of oxides (EEW in oxygen contained medium). Phase compositions of nanopowders prepared by electrical explosion of tungsten and aluminium wires in liquid an...

Imparting ductility to glass effectively counters brittleness caused by stress concentration. Spark plasma sintering of silica (SiO2) nanopowder and a silver nitrate mixture successfully dispersed (Ag) nanoparticles into SiO2 matrix. The Ag-precipitated showed crack bridging during propagation softening owing the imparted Ag. Compared with glass, exhibited fewer cone cracks suppressed radial pr...

Nickel ferrite (NiFe2O4) nanopowder has been synthesized by a sol-gel auto-combustion process and further sintered at various sintering temperatures. The samples were characterized XRD, SEM VSM. Enhancement of apparent density the sample observed with increase in temperature great influence on magnetic dielectric properties NiFe2O4. results reveal that grain size increases increasing temperatur...