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Electrical Contact Materials And Method For Preparing The Same

An electrical contact material and metal technology, applied in conductive materials, conductive materials, circuits, etc., can solve the problems of complex preparation process and high preparation cost, and achieve the effect of reducing content, reducing preparation cost, excellent hardness and conductivity

Active Publication Date: 2015-06-03
LSIS CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the silver (Ag) content of the electrical contact material is still high
Therefore, the preparation cost is high, the preparation process is complicated, etc.

Method used

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  • Electrical Contact Materials And Method For Preparing The Same
  • Electrical Contact Materials And Method For Preparing The Same
  • Electrical Contact Materials And Method For Preparing The Same

Examples

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Effect test

preparation example Construction

[0052] (5) Preparation of electrical contact materials

[0053] A method for preparing an electrical contact material according to the present invention includes: (a) by mixing (i) nickel (Ni) with one or more metals selected from silver (Ag), copper (Cu) and gold (Au) alloys, and (ii) Ag nanoparticles-coated CNTs, Ag-plated CNTs, or Ag nanowires to prepare a powder mixture, or by mixing (i) one or more metals selected from Ag, Cu, Ni, and Au , (ii) metal oxides, which are cadmium oxide, indium oxide, tin oxide, zinc oxide or mixtures thereof, and (iii) Ag nanoparticle-coated CNTs, Ag-plated CNTs or Ag nanowires to prepare a powdery mixture; (b) dispersing the powder mixture using sonication, and vacuum drying the dispersed powder mixture; and (c) sintering the vacuum dried powder mixture. figure 2 A method of making the electrical contact material is shown.

[0054] Hereinafter, a method of preparing the electrical contact material will be described in detail.

[0055] (5...

Embodiment approach 1

[0073] 1-1. Preparation of nAgCNTs

[0074] AgNO 3 Ag nanoparticles were formed by dissolving in ethanol for 1 hour with a stirrer using a magnetic bar and then stirring for 3 days with a small amount of benzyl mercaptan added to the ethanol. Ag nanoparticles bound to benzyl groups donated by the benzylthiol were bound to CNTs within hours when water-bath-type sonication was performed.

[0075] 1-2. Preparation of Ag-Ni-nAgCNTs

[0076] After immersing nAgCNTs (0.1 wt%) with micro-sized Ag powder (59.9 wt%) and Ni powder (40 wt%) in ethanol, ultrasonic treatment was used to uniformly disperse each of the nAgCNTs, Ag powder, and Ni powder. One. After combining the dispersed solutions, the combined solutions were dispersed again using sonication. The dispersed mixture powder was separated from the solvent using vacuum filtration and dried under vacuum. The dried powder is pulverized to finally obtain a mixture powder.

[0077] Using the SPS, the mixture powder was filled i...

Embodiment approach 2

[0079] 1 wt% Ag-coated CNTs and 59 wt% micro-sized Ag powder were used. A sintered body was prepared in the same manner as Embodiment Mode 1 except that the sintering temperature was 750°C. The Ag-plated CNTs have a diameter of 20 to 80 nm.

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Abstract

Disclosed are electrical contact materials and a method for preparing the same. The electrical contact material includes (i) one or more kinds of metals selected from the group consisting of silver (Ag), copper (Cu) and gold (Au), and an alloy of nickel (Ni); and (ii) carbon nano tubes (CNTs) coated with Ag nanoparticles, Ag plated CNTs, or Ag nanowires, or (i) one or more kinds of metals selected from the group consisting of Ag, Cu, Ni and Au; (ii) a metal oxide that is cadmium oxide, indium oxide, tin oxide, zinc oxide or mixture thereof; and (iii) CNTs coated with Ag nanoparticles, Ag plated CNTs, or Ag nanowires. Accordingly, it is possible to reduce the content of high-priced Ag and to obtain excellent electrical and mechanical properties.

Description

technical field [0001] The present invention relates to an electrical contact material having excellent electrical and mechanical properties, and a method for preparing the electrical contact material. Background technique [0002] An electrical contact material is an electrically conductive contact element used to make contact when an electrical circuit is opened or closed in an electrical device such as a circuit breaker or switch. The electrical contact material is applied in engine switches, switchgears, MCBs, compact engines and lights, automobiles, home appliances, etc. [0003] The electrical contact material requires physical properties such as high melting point, excellent electrical and thermal conductivity, low contact resistance, excellent welding resistance, high hardness related to wear resistance, and small deformation of the contact surface. [0004] The electrical contact materials can be classified into low current (less than 1A) contact materials, medium ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H1/021H01H11/04
CPCH01H1/021H01H1/027C22C32/0021C22C32/0084C22C49/08C22C49/14B22F2003/1051B22F2201/20B22F2202/01C04B35/01C04B35/0435C04B35/047C04B35/66C04B2235/3222C04B2235/5472C04B2235/656C04B2235/77C04B2235/96C04B2235/9615H01B1/026C22C19/03C22C19/002C22C5/02C22C5/06C22C5/08C22C9/06H01B1/02H01B1/04H01B1/08H01H1/0237H01H1/023H01H1/025C22C1/0425C22C1/0433C22C1/0466C04B35/62876C04B35/62892C04B35/62889
Inventor 朴麒勋宋寅缵白承铉李东穆沈正贤
Owner LSIS CO LTD
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