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

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...

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 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 low hardness and poor wear resistance