Tungsten Carbide Cobalt (WC-Co, Cemented Carbide) Nanoparticles – Properties, Applications

Nanoparticles exhibit unexpected behavior that cannot be achieved with basic elements in their original states. These unexpected properties of nanoparticles have expanded their applications to the field of cosmetics, biomedicine, electronics, etc. This article will look into the properties and applications of tungsten carbide-cobalt nanoalloy.

Tungsten carbide-cobalt is an alloy of hard, ceramic tungsten carbide and the ductile cobalt, often known as cemented carbide. The material is a metal matrix composite, in which cobalt particles are ambedded in a tungsten carbide matrix. The tungsten carbide can form as WC or WC2, depending on synthesis conditions. Cobalt content varies from around 1% to 30% by weight, depending on application.

Some of the noteworthy properties of this alloy are strength, hardness, high electrical and thermal conductivity and high malleability and ductility. Tungsten is a Block D, Period 6 element, cobalt is a Block D, Period 4 element and carbon is a Block P, Period 2 element. These particles are available in a variety of forms such as ingots, foils, sputtering targets and plates.

The chemical properties of tungsten carbide-cobalt nanoparticles are as per the table below.

Tungsten carbide-cobalt nanoparticles appear as a black powder having nearly spherical morphology. The physical properties are as below.

The thermal properties of tungsten carbide-cobalt nanoparticles are provided in the table below.

Some of the applications of tungsten carbide-cobalt are given below:

For press and sintering purposes
Making of chip-less forming tools
Mixed with coatings to enhance their hardness and strength
Production of mining, cutting tools and other wear resistant machine parts.


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