Study on Strengthening of Graphene and Carbon Nanotube to Shield Machine Carbide Cutter

Abstract

It has been found that thermal effects play a major role in the failure of cemented carbide tools. In order to improve the service life of carbide cutting tools, the high temperature strength and thermal conductivity of the cutting tools should be further improved. Graphene has the highest thermal conductivity and high temperature hardness, and carbon nanotubes (CNTs) have high strength and toughness. The graphene and CNTs strengthen Co phase with dispersion strengthening and fiber strengthening mechanism by dispersing uniformly to WC-Co cemented carbide with an appropriate ratio and clustering around WC particles, furthermore, it could reduce its operating temperature by drastically increasing the thermal conductivity.