TiC/TiB2/Al/Cu electrical contact material as well as preparation method and application thereof

An electrical contact material and electrical contact technology, applied in the field of materials, can solve the problems of limited metal resource reserves, large material weight ratio, limited popularization and application, etc., and achieve the effects of simple and feasible preparation process, excellent electrical conductivity, and simple equipment.

Active Publication Date: 2014-08-13
威海区域创新中心有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For these two types of contact materials, the precious metal elements such as Cu, Ag, W etc. account for a large proportion of the material weight, so they are expensive, and the resource reserves of these metals are limited, which affects and

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment 1 TiC / TiB of the present invention 2 / Al / Cu electrical contact material preparation.

[0024] Mix 3g of titanium carbide powder, 2g of titanium boride powder, 1g of aluminum powder, 4.8g of copper powder and 0.2g of graphite powder, then press and shape it under a pressure of 15MPa, take out the compact and put it in a vacuum sintering furnace for sintering. 4*10 -3 pa absolute pressure, the sintering temperature is 900°C, and the temperature is kept for 5 hours to obtain TiC / TiB 2 / Al / Cu electrical contact material. The obtained TiC / TiB was measured 2 / Al / Cu electrical contact material preparation performance, the results are shown in Table 1.

Embodiment 2

[0025] Embodiment 2 TiC / TiB of the present invention 2 / Al / Cu electrical contact material preparation

[0026] Mix 4g of titanium carbide powder, 2g of titanium boride powder, 1g of aluminum powder, 2.8g of copper powder and 0.2g of graphite powder, then press and shape it under a pressure of 20MPa, take out the compact and put it into a vacuum sintering furnace for sintering. The vacuum condition is 4.5*10 -3 Pa absolute pressure, sintering temperature is 1000 ℃, heat preservation 3h, get TiC / TiB 2 / Al / Cu electrical contact material. The obtained TiC / TiB was measured 2 / Al / Cu electrical contact material preparation performance, the results are shown in Table 1.

Embodiment 3

[0027] Embodiment 3 TiC / TiB of the present invention 2 / Al / Cu electrical contact material preparation.

[0028] Mix 3.9g of titanium carbide powder, 2g of titanium boride powder, 2g of aluminum powder, 2g of copper powder and 0.1g of organic solvent, then press and form it under a pressure of 20MPa, take out the briquetting room and sinter in a vacuum sintering furnace under a vacuum condition of 4.8 *10 -3 Pa absolute pressure, sintering temperature is 1100 ℃, heat preservation 6h, to get TiC / TiB 2 / Al / Cu electrical contact material. The obtained TiC / TiB was measured 2 / Al / Cu electrical contact material preparation performance, the results are shown in Table 1.

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PUM

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Abstract

The invention discloses a TiC/TiB2/Al/Cu electrical contact material and a preparation method thereof, and belongs to the field of materials. The TiC/TiB2/Al/Cu electrical contact material is prepared from the following raw materials in parts by weight: 28-40 parts of titanium carbide, 10-20 parts of titanium boride, 10-22 parts of aluminum, 20-54 parts of copper and 1-3 parts of bonding agents, wherein the bonding agents are graphite powder and/or organic solvents. The TiC/TiB2/Al/Cu electrical contact material is obtained through the following steps: uniformly mixing the raw materials, and then carrying out compression moulding at the pressure of 10-20 MPa; and then keeping temperature under a vacuum condition at 700-1100 DEG C for 3-6 hours. The TiC/TiB2/Al/Cu electrical contact material disclosed by the invention reduces the content of the Cu, increases the content of strengthening phase titanium carbide and titanium boride, improves the wetting property of the titanium carbide and the copper and has the advantages of high density, low contact resistance, good welding resistance, high rigidity, bending strength and suitability for industrial large-scale production application.

Description

technical field [0001] The invention belongs to the field of materials, in particular to a TiC / TiB 2 / Al / Cu electrical contact material and its preparation method and application. Background technique [0002] At present, electrical contact materials can be roughly divided into the following categories: copper-based contact materials, noble metal-based contact materials, tungsten-based contact materials, etc. Among them, the most widely used and most representative ones are Cu-W alloy and Ag-based electrical contact materials. For these two types of contact materials, the precious metal elements such as Cu, Ag, W etc. account for a large proportion of the material weight, so they are expensive, and the resource reserves of these metals are limited, which affects and limits their popularization and application and further development. Develop applications at scale. In addition, the proportion of metal contained in the existing contact material is too large, resulting in lo...

Claims

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Application Information

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IPC IPC(8): C22C29/00C22C1/05H01B1/02H01B1/06
Inventor 庞立娟邓刚张雪峰方民宪李会容唐伟
Owner 威海区域创新中心有限责任公司
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