SiC nanowire reinforced aluminum matrix composite and preparing method thereof

Abstract

The invention discloses an SiC nanowire reinforced aluminum matrix composite and a preparing method thereof and relates to aluminum matrix composites and preparing methods thereof. The problem that preparing of an existing SiC nanowire reinforced aluminum matrix composite is complex in process, high in cost and long in consumed time is solved. The SiC nanowire reinforced aluminum matrix composite is prepared by SiC nanowires and aluminum metal. The preparing method comprises the steps of firstly, weighing; secondly, preparing an SiC nanowire prefabricating body; thirdly, preparing the preheated SiC nanowire prefabricating body, and melting the aluminum metal; and fourthly, infiltrating molten aluminum, cooling, releasing a mold, obtaining an ingot casting, and completing the preparing. A pre-dispersion and prefabricated body forming one-step method technology of the SiC nanowires shortens the technological process, consumed time is shortened by one day, the preparing efficiency of the composite is improved, and the cost is reduced. A method combining low-surface tension and large external pressure is adopted, and infiltration of molten Al is promoted. The preparing method is simple, and easy to operate and control, and the composite has the beneficial effects of being low in density and high in compactness.

Description

technical field [0001] The invention relates to an aluminum-based composite material and a preparation method thereof. Background technique [0002] In recent years, nano-metal matrix composites have occupied an important position in the research of metal matrix composites due to their ultra-high strengthening effect. The reinforcements currently introduced in nano-metal matrix composites include nanoscale ceramic particles, carbon nanotubes, nanowires, and graphene. In order to ensure that the strengthening effect of the reinforcement is fully exerted and the performance advantages of the nano-metal matrix composites are improved, it is necessary to add a higher content of nano-reinforcements; however, the high-content nano-metal matrix composites have always faced two major problems. The first is The surface energy of the nano-reinforcement is very large, and it is extremely easy to agglomerate. It is difficult to disperse it uniformly in the matrix like a micron-scale re...

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Problems solved by technology

[0005] The purpose of the present invention is to provide SiC nanowire-reinforced aluminum-matrix composite material and its preparation method in order to sol

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