Aluminum base carbon fiber graphite composite material and preparation method

Abstract

The invention relates to an aluminum base composite material, in particular to an aluminum base carbon fiber graphite composite material and a preparation method. The method comprises the following steps of: firstly, adopting finely sorted, processed and checked graphite fluoride powder as raw materials for preparing spherical graphite particles through granulation and spheroidization; then, using a stainless steel plate as a cathode and pure aluminum as an anode, filling insert gas between the two electrodes, exerting voltage, soaking the spherical graphite particles by glucose amide containing 0.23 to 0.6 percent of boron, cleaning and baking the spherical graphite particles, placing the spherical graphite particles on a disc between the cathode and the anode, shaking the disc while exerting the voltage, and arranging latticed high-performance carbon fiber in a casting mold at the arrangement density determined according to the intensity requirement of the materials; filling the spherical graphite particles with the diameter between 1 and 5mm in the casting mold, finally, injecting aluminum liquid, applying pressure at the upper part of the mold so that the aluminum liquid can be filled between the spherical graphite particles, and obtaining products after cooling. The composite material is simple to prepare, and has the advantages of high product intensity, light weight, wear resistance, low raw material consumption and high production efficiency.

Description

technical field [0001] The invention relates to an aluminum-based composite material, in particular to an aluminum-based carbon fiber graphite composite material and a preparation method thereof. Background technique [0002] The disadvantages of aluminum alloys are low hardness and poor wear resistance. Aluminum matrix composites have become a new material that has developed rapidly in recent years due to their advantages such as low density and corrosion resistance. Aluminum-based composite materials include non-metallic spherical particles, whiskers, short fibers and other discontinuous reinforcements, especially spherical particle-reinforced aluminum-based composite materials, whose performance is comparable to that of titanium alloys, but the price is less than ten times that of titanium alloys. One of them, thus known as a breakthrough material. At present, the main process methods for preparing spherical particle reinforced aluminum matrix composites include extrusio...

AI Technical Summary

Problems solved by technology

[0004] The invention provides an aluminum-based carbon fiber composite material with good uniformity and stable performance and a preparation method, which overcomes the shortcomings of existing aluminum alloys such as low strength, poor fatigue resistance, poor thermal conductivity and electrical conductivity, etc.