A kind of amorphous phase silicate particle and sic particle reinforced aluminum matrix composite material and its preparation

Abstract

The invention relates to an aluminum-based composite material reinforced with amorphous silicate particles and SiC particles and its preparation and application. The aluminum-based composite material includes an aluminum matrix as a matrix and silicate particles and SiC particles as a reinforcement , the silicate particles are located between the aluminum matrix and the SiC particles, and the silicate particles are in an amorphous phase. The aluminum-based composite material is prepared by a powder metallurgy method or a melting and casting method, and the silicate particles are in an amorphous phase through water cooling and quenching at a temperature of 550-650°C. Compared with the prior art, the silicate-based ceramic particles in the amorphous phase of the present invention can modify the interface and play the role of "binder", which improves the wettability of the SiC / Al interface and improves the microstructure. Uniformity, which in turn improves material properties.

Description

technical field [0001] The invention relates to the field of aluminum-based composite materials, in particular to an amorphous-phase silicate particle and SiC particle-reinforced aluminum-based composite material and its preparation and application. Background technique [0002] As a lightweight composite material, aluminum matrix composites have the advantages of light weight, low wear, good thermal conductivity and thermal fatigue resistance. They occupy a key position in the research of metal matrix composites and are widely used in the automotive industry. , aerospace and other fields. In recent years, particle-reinforced aluminum-based composite materials have been developed rapidly. The material can achieve different mechanical and service properties of aluminum-based materials by changing the type, content, and size of the reinforcing particles. At present, the reinforcement particles introduced into aluminum matrix composites mainly include ceramic particles, carbon...

AI Technical Summary

Problems solved by technology

At present, the reinforcement particles introduced into aluminum matrix composites mainly include ceramic particles, carbon nanotubes, nanowires, and graphene, etc., but the cross-sectional bonding force between the reinforcement and the aluminum matrix is ​​weak, and under harsh conditions In this case, the reinforcing body will fall off from the matrix, which will greatly reduce the performance of the material.

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