Nano carbon tube composited contact material

Abstract

This invention relates to an nm carbon tube composite electric contact material. The component and its weight percentage are: nm carbon tube: 0.02-5%, the rest is the parent metal. Said nm carbon tube is a multi-wall one with the diameter of 20-100nm or a single wall nm carbon tube with the limited diameter of 1-3nm and length of 1-2mum. Said parent metal refers to the metal prepared by electric deposition reaction and its alloy. This invention applies the carbon nm tube with advanced mechanical and conductive characters as the enhancement substance to replace the traditional substances of CdO, SnO2, MoSz, WCSiC, La2O3 and diamond dust to keep fine conductivity of the parent metal and overcome the Ge pollution.

Description

technical field

[0001] The invention relates to an electrical contact material in the technical field of composite materials, in particular to a carbon nanotube composite electrical contact material. Background technique

[0002] Electrical contact materials are used to make contacts for active electrical connections, and are one of the key materials commonly used in the fields of electric power, automatic control, and information transmission. The electrical contact phenomenon is a very complex physical phenomenon, which puts forward many harsh and even contradictory requirements for electrical contact materials, such as high electrical conductivity, low contact resistance, high thermal conductivity, high wear resistance, corrosion resistance, solder resistance, Shock resistance and other properties. Most of the traditional electrical contact materials are metal matrix composite materials synthesized by noble metal (Ag, Au, Pt, etc.) materials and ceramic particles through...