Preparation method for SiC coated carbon fiber reinforced metal based composite material

Abstract

The invention relates to a preparation method for a SiC coated carbon fiber reinforced metal based composite material. The preparation method comprises the following steps: performing pyrolytic carbondeposition-silicon carbide deposition treatment on carbon fibers, coating the carbon fibers with phenolic resin, and ball-milling with a matrix metal ball to obtain uniformly mixed powder; and performing a pressing-sintering process to obtain the composite material. Wear resistance of the carbon fibers is remarkably improved through a pyrolytic carbon deposition-silicon carbide deposition treatment method, and the problems that the carbon fibers are easily wound, are unevenly dispersed in the material and are difficult to keep in a carbon fiber structure are successfully solved in combinationwith a phenolic resin coating and ball-milling process; moreover, the carbon fibers are coated with silicon carbide, so that the problems such as uncompact interface sintering due to poor intrinsic embrittlement of the CVD coated carbon fibers, and poor wettability with most of metals are solved, room-temperature and high-temperature mechanical properties of products are greatly improved while compact sintering is realized, and wear resistance of products is especially improved greatly.

Description

technical field

[0001] The invention relates to a metal-matrix composite material, in particular to a method for preparing a SiC-coated carbon fiber-reinforced metal-matrix composite material. Background technique

[0002] Carbon fiber reinforced metal matrix composites have both the high electrical and thermal conductivity, good strength and toughness, and corrosion resistance of metals, as well as the high strength, high toughness, and wear resistance of carbon fibers. candidate material.

[0003] In recent years, researchers have done a lot of research to improve the mechanical properties and high-temperature oxidation resistance of composite materials, mainly focusing on the improvement of the wettability of the carbon fiber / metal interface, such as plating metal on the surface of carbon fiber and adding other alloying elements to the metal. Reduce the interfacial wettability with carbon to improve the interfacial bonding strength of the material, and promote the reduct...

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