Editorial Feature

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 composition of

Chemical Properties

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

Chemical Data
Chemical symbol WC-Co
CAS No -
Group Tungsten 6
Carbon 14
Cobalt 9
Electronic configuration Tungsten [Xe] 4f14 5d4 6s2
Carbon [He] 2s2 2p2
Cobalt [Ar] 3d7 4s2

Physical Properties

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

Properties Metric Imperial
Density 3.9 g/cm3 0.14 lb/in3

Thermal Properties

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

Properties Metric Imperial
Melting Point 2867°C 5192°F
Boiling Point 6000°C 10832°F


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.

Source: AZoNano

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