Method for producing nanopowders using electrical wire explosion

Abstract

A method for producing nanopowders using electrical wire explosion is provided, which includes forming a wire in a helical spring structure, supplying the formed wire to a supplier, electrically exploring the wire through applying high voltage to the wire after supplying the wire that is supplied to the supplier into a chamber, and collecting nanopowders generated through explosion of the wire, wherein the wire formed in a helical spring structure has a pitch of 0.4 to 0.8 mm, a number of coils of 10 to 13, and a diameter of 1 to 2 mm.

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]This application is based on and claims priority from Korean Patent Application No. 10-2013-0142502 filed on Nov. 21, 2013 in the Korean Intellectual Property Office, the disclosure of which is incorporated herein in its entirety by reference.BACKGROUND[0002]1. Field[0003]The present disclosure relates to a method for producing nanopowders using electrical wire explosion, and more particularly, to a method for producing nanopowders using electrical wire explosion, which can improve the production capacity of nanopowders through supply of a wire in a helical spring structure.[0004]2. Background of the Related Art[0005]Generally, a method for producing single metal powders includes an atomization method, a liquid phase reduction method, and a method using plasma.[0006]However, according to the atomization method, it is unable to produce nano-sized powders, but powders having a size of about 50 μm can be produced.[0007]The liquid phase reduct...

AI Technical Summary

Benefits of technology

This patent describes a method for producing nanopowders using electrical wire explosion. By using a helical spring structure and supplying the wire in a straight line shape, the production capacity of nanopowders can be increased several times over. This results in a significantly larger amount of nanopowders being produced in a single explosion.

Problems solved by technology

However, according to the atomization method, it is unable to produce nano-sized powders, but powders having a size of about 50 μm can be produced.

The liquid phase reduction method can produce several noble metals with a nano size, but has the disadvantage that it is unable to be applied to normal metal powders.

The plasma method has the problem that it has large power consumption in comparison to the production, and requires a separate device that prevents oxidization when the powders are collected.

Thus, according to the method in the related art, it is unable to stably produce metal powders of a nano size.

However, although the technology in the related art is composed of a multistage buffer cyclone, a filter, and a hopper, and thus has a complicated configuration, yield of the produced powders is only 50 to 60%.

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