Method of manufacturing super hard alloy containing carbon nanotubes, super hard alloy manufactured using same, and cutting tool comprising super hard alloy

Abstract

Disclosed is a method of manufacturing a super hard alloy containing carbon nanotubes, including (a) forming a carbon nanotube-metal composite from carbon nanotubes and metal powder, (b) mixing the carbon nanotube-metal composite obtained in (a) with hard-phase powder, (c) molding the powder mixture obtained in (b), and (d) sintering the molded body obtained in (c). In the method of the invention, the reaction between carbon nanotubes and transition metal carbide in the super hard alloy is minimized, thus maximizing an increase in toughness by virtue of the addition of carbon nanotubes, thereby obtaining the super hard alloy having both high hardness and high toughness. The super hard alloy containing carbon nanotubes manufactured using the method of the invention has high hardness and high toughness, and thus can be effectively utilized in cutting tools, molds, wear-resistant members, heat-resistant structural materials, etc.

Dependencies are inferred from the claim text.