TiB2 particle and carbon nano tube hybrid reinforced copper-based composite material and preparation method thereof

Abstract

The invention relates to a TiB2 particle and carbon nano tube hybrid reinforced copper-based composite material and a preparation method thereof. The copper-based composite material is prepared from TiB2, a coppered carbon nano tube and copper powder, and the sum of the volume percent of the TiB2 in the raw material and the volume percent of the coppered carbon nano tube in the raw material is notmore than 10%. According to the copper-based composite material provided by the invention, a copper substrate is subjected to hybrid reinforced modification by adopting the TiB2 particles and the coppered carbon nano tube, the two components including the TiB2 particles and the coppered carbon nano tube exist in the copper substrate in a particle form and a whisker form correspondingly, on the basis that the self physical property parameters of the two reinforcement bodies are sufficiently achieved, complementary advantages and the coupling effect of the two reinforcement bodies can be achieved by means of the different placeholders of the two reinforcement bodies in the copper substrate, and accordingly, the purposes that synergetic enhancement of the substrate is conducted, and the comprehensive performance of the copper-based composite material is improved are achieved.

Description

Technical field

[0001] The invention belongs to the field of copper-based composite materials, and specifically relates to a TiB 2 A copper-based composite material reinforced by mixing particles and carbon nanotubes and a preparation method thereof. Background technique

[0002] In recent years, with the rapid development of my country's transportation and electric power industries and the continuous improvement of technical levels, higher requirements have been put forward for the characteristics of high-strength and high-conductivity copper alloy materials, such as conductive contact contact materials and copper alloy wear resistance Pieces and brushes. Commonly used precipitation-strengthened copper alloys (such as Cu-Cr and Cu-Zr alloys, etc.), their high strength and high conductivity are obtained by the strengthening of the copper matrix by the fine dispersion precipitated after heat treatment. However, when the service temperature exceeds the temperature of precipitation ...

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