Composite material of carbon/carbon/copper and production technology thereof

Abstract

The invention discloses carbon / carbon / copper composite material which has the advantages that the production process is easy to be controlled, the isotropy of the product is good, and the combined property is good. The invention is characterized in that the carbon / carbon / copper composite material is calculated according to the weight percentage, and the weight ratio of the carbon / carbon composite material to copper or copper alloy is 15 to 75: 85 to 25; the production process comprises the following steps: a prepared web and carbon cloth are compounded into a precasting part through needling, the carbon, the copper or the copper alloy with different morphologies is compounded into a whole through densification (or vacuum pressure copper cementation) to form the carbon / carbon / copper composite material; the production process of the invention is simple and easy to be controlled, and the made composite material has good abrasive resistance and feasible electrical conductivity, and also has the advantages of high specific strength, high specific modulus, high temperature resistance and ablation resistance, and can be applied to the high conductivity and abrasive resistance field; the abrasion loss of an electric brush made of carbon / carbon / copper composite material is lower than 0.18 mm / 50 hours, and the abrasion loss of the prior electric brush is generally higher than 0.20 mm / 50 hours.

Description

Technical field: [0001] The invention relates to a material used in the field of high electrical conductivity and wear resistance, in particular to a carbon / carbon / copper composite material and its production process. Background technique: [0002] Carbon fiber-copper matrix composites have high strength, good conductivity, With a series of advantages such as wear resistance, corrosion resistance, arc ablation resistance and fusion welding resistance, it has been widely used in electronic component materials, sliding materials, contact materials, integrated circuit cooling plates and wear-resistant devices, etc. It is a new type of functional material with great development prospects. At present, the following processes are mainly used to prepare carbon fiber-copper matrix composites: powder metallurgy, hot pressing, squeeze casting, etc. The preparation of carbon fiber-copper matrix composites by powder metallurgy has the disadvantages of low production efficiency and com...

AI Technical Summary

Problems solved by technology

The preparation of carbon fiber-copper matrix composites by powder metallurgy has the disadvantages of low production efficiency and complex production process, and is generally only suitable for short fiber-copper matrix composites with low fiber content; The damage is small, and the performance of the prepared material is better, but the equipment is expensive, the cost is high, it is not easy to produce in batches, and it is difficult to promote in industry; the preparation of carbon fiber-copper matrix composites by extrusion casting is an effective method, and the process parameters are easy Control, stable performance, low preparation cost, reasonable control of process parameters can prepare high-performance composite materials, but there are still many deficiencies in obtaining composite materials with good preparation performance. Squeeze casting process is prone to several major defects: fiber volume content It is difficult to control, and it is easy to cause the segregation of carbon fibers; under high pressure, it causes a large stress concentration, the interface between the fiber and the fiber is in brittle contact, and the crack is easy to expand rapidly, resulting in low stress failure