Nanopowders produced by electrical explosion of wires
نویسنده
چکیده
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 and solid hydrocarbons and water were investigated. The influence of the electrical parameters and the reaction ambient characteristics on the phase and size composition of EEW products was studied. Some fields of application of electroexplosive nanopowder are discussed. It is improvement of the tribological characteristics of industrial oil after treatment with electrical explosion of copper wires, which causes a friction constant to be decreased to 40 %. Very active oxide-hydroxide phases can be used for water purification from ions of heavy and radioactive metals.
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