Preparation method of carbon fiber reinforced aluminum-based composite material

Abstract

The invention discloses a preparation method of a carbon fiber reinforced aluminum-based composite material. The preparation method comprises the following steps of firing carbon fibers, and then carrying out coarsening treatment at room temperature; then adding SnCl2, then adding HCl sensitized treatment, taking out, rinsing in static water, adding a mixed solution of silver nitrate and ammonia water, and carrying out room temperature activation treatment; continuously stirring the activated carbon fibers in a chemical plating solution to complete chemical plating; taking the carbon fibers subjected to chemical plating as a cathode, using metal copper as an anode to perform electroplating treatment in the electroplating solution, adding industrial raw aluminum into a smelting furnace, melting, refining and slagging off, stirring by adopting upper horizontal and lower inclined blades, adding 10%-30% of copper-plated carbon fibers while stirring, carrying out heat preservation treatment, and casting to form the high-strength carbon fiber reinforced aluminum-based composite material. According to the method, the binding force of the carbon fiber and the copper coating is improved, auniform and thick coating can be obtained, the black core phenomenon is avoided, the wettability of the carbon fiber and the aluminum liquid is improved, the material performance is excellent, and thepreparation process is simple and convenient.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and in particular relates to a method for preparing a carbon fiber reinforced aluminum-based composite material. Background technique [0002] With the development of aerospace technology, traditional structural materials such as aluminum, magnesium, copper, and titanium alloys can no longer meet their latest application requirements. Metal matrix composites, which have been studied since the 1970s, have high temperature resistance , good wear resistance, generally higher mechanical properties than the base metal, smaller thermal expansion coefficient than the base metal, higher thermal conductivity, and all properties can be designed within a certain range, which has been favored by the aerospace sector. Among metals Adding an appropriate amount of high specific strength, high specific modulus, low density fibers, whiskers, particles and other reinforcements can significantly improve...

AI Technical Summary

Problems solved by technology

[0002] With the development of aerospace technology, traditional structural materials such as aluminum, magnesium, copper, and titanium alloys can no longer meet their latest application requirements. Metal matrix composites, which have been studied since the 1970s, have high temperature resistance , good wear resistance, generally higher mechanical properties than the base metal, smaller thermal expansion coefficient than the base metal, higher thermal conductivity, and all properties can be designed within a certain range, which has been favored by the aerospace sector. Among metals Adding an appropriate amount of high specific strength, high specific modulus, low density fibers, whiskers, particles and other reinforcements can significantly improve the specific strength and specific modulus of the composite material, but when preparing carbon fiber reinforced aluminum matrix composites, The wettability between carbon fiber and metal aluminum is poor, the preparation process is very complicated, and it is difficult to realize industrialization