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Method for manufacturing alloy NANO powders

a nanopowder and alloy technology, applied in the field of alloy nanopowder manufacturing, can solve the problems of difficult manufacturing of alloy or multi-component nanopowder, low production rate, and relatively fast production rate of electrical explosion method

Inactive Publication Date: 2007-09-13
KOREA INST OF GEOSCI & MINERAL RESOURCES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Benefits of technology

[0011] As a method of coating a certain metal or alloy on a metal wire, there are sputtering, evaporation, chemical vapor deposition, melt dipping, electroplating, and electroless plating methods, etc. Among the above methods, it is known that an electroplating method and an electrole

Problems solved by technology

With the above methods it is not easy to manufacture alloy or multi-component nanopowders.
A production rate is also very low.
However, the electrical explosion method may have a relatively faster production rate as compared to the other methods.
However, the alloy or intermetallic compound has some problems during its wire forming process as compared to the pure metals.
Since alloy powders are mostly produced by small quantity batch production system, it is very difficult to obtain alloy wires of a specific composition in the market.
However, this method has not been successful yet.
However, the above method is not actually adapted for applications.
In particular, there are not disclosed a simple and low cost manufacturing method of alloy or intermetallic compound wires and an alloy nano powder manufacturing method by electrical explosion which does not use alloy or intermetallic compound wires.

Method used

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  • Method for manufacturing alloy NANO powders
  • Method for manufacturing alloy NANO powders
  • Method for manufacturing alloy NANO powders

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embodiment 1

[0024] In this embodiment of the present invention, copper is plated using the plating apparatus of FIG. 1, and a nickel / copper wire is manufactured. Nickel / copper alloy nanopowders are electrically exploded in apparatus of FIG. 2 using the above wire.

[0025] Here, the copper plating solution is prepared using distilled water. The composition of the copper plating solution is 195 g / l of CuSO45H2O and 30 g / l of H2SO4. The copper plating is performed at a room temperature, and the current density during the plating is about 10˜50 mA / cm2. The nickel wire used as a base metal has a diameter of 0.2 mm. FIG. 3 is a photograph showing the appearance of the nickel / copper wire.

[0026] The plated nickel-copper wire is exploded at the electrical explosion apparatus. The electrical explosion apparatus is a product model NTI 10P manufactured by Nano technology corporation. The length of the wire used for the electrical explosion is 10 mm. The electrical explosion experiment is performed in a sta...

embodiment 2

[0029] In this embodiment of the present invention, copper is electroplated on an aluminum wire in the same manner as the first embodiment of the present invention for thereby manufacturing an aluminum / copper wire. Aluminum-copper alloy nanopowders are manufactured based on the electrical explosion method using the aluminum / copper wire as a raw material.

[0030] Here, the aluminum wire has a diameter of 0.2 mm. The composition of the copper plating solution is 195 g / l of CuSO45H2O and 30 g / l of H2SO4. The plating is performed at room temperature. The current density is about 10˜50 mA / cm2. The plated aluminum-copper wire is exploded in the electrical explosion apparatus of FIG. 2. The explosion is performed under the same condition of the first embodiment of the present invention.

[0031]FIG. 6 is a view illustrating a result of the X-ray diffraction analysis of aluminum-copper alloy powders according to the present invention. As shown in FIG. 6, the major phases of the powders are CuA...

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Abstract

A method for manufacturing alloy nanopowders is disclosed, which comprises a step in which a wire manufactured in such a manner that at least one hetero metal is coated on a metallic wire is used to manufacture alloy nanopowders. At least one hetero metal is coated on a pure metal wire or an alloy wire based on an electroplating method, an electroless plating or other methods. The alloy wire is electrically exploded for thereby manufacturing at least two-component alloy nanopowder.

Description

TECHNICAL FIELD [0001] The present invention relates to a method for manufacturing alloy nanopowders, and in particular to an improved method for manufacturing alloy nanopowders using a wire which is manufactured in such a manner that at least one hetero metal is coated on a metal wire. BACKGROUND ART [0002] Metal nanopowders are manufactured by an electrical explosion method, a plasma method, a liquid phase method, a laser ablation method or a vapor deposition method etc. With the above methods it is not easy to manufacture alloy or multi-component nanopowders. A production rate is also very low. However, the electrical explosion method may have a relatively faster production rate as compared to the other methods. With this method, it is possible to manufacture nanopowders of diverse pure metals, oxides and nitrides. [0003] In the electrical explosion method, a high powder pulse of only a few microseconds duration is applied to a wire, which is fed into an argon-filled container. U...

Claims

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Application Information

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IPC IPC(8): B22F9/14
CPCB22F9/14B22F2998/10B22F1/0018A01K69/06A01K69/08
Inventor KIM, WON-BAEKPARK, JE-SHINSUH, CHANG-YOULKIL, DAE-SUPLEE, JAE-CHUN
Owner KOREA INST OF GEOSCI & MINERAL RESOURCES