Method for producing high-volume fractional silicon-carbide particle reinforced aluminium-base composite material member

Abstract

A technology for preparing the silicon carbide particles reinforced Al-based workpiece (SiCp / Al) with high volume fraction includes such steps as proportionally mixing SiC particles with paraffin wax based multi-polymer adhesive, stirring, granulating, injection moulding, thermal defatting in solvent, presintering at 1000-1150 deg.C, and osmosizing the molten Al alloy into SiC skeleton at 1100-1200 deg.C in N2 atmosphere.

Description

technical field

[0001] The invention belongs to the forming technology of metal-matrix composite parts, and in particular provides a method for preparing high-volume silicon carbide particles reinforced aluminum-based (SiCp / Al) composite parts. The preparation of low-cost, high-performance metal matrix composite parts is realized. Background technique

[0002] Particle-reinforced aluminum matrix composites are the most studied and widely used composite materials in the field of composite materials. High volume fraction (>60vol%) SiCp / Al composites have excellent physical and mechanical properties, such as 2 to 3 times the specific strength of titanium alloys, high dimensional stability superior to beryllium materials, and compatibility with steel and titanium The low linear expansion coefficient matched with alloys and even ceramic substrates, the thermal conductivity equivalent to the strength of beryllium materials and silicon carbide ceramics, the yield strength much ...

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