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INTRODUCTION

CARBIDE – A COMPOSITE MATERIAL

Carbide – a composite material with valuable properties

Carbides are composite materials consisting of a hard mate-

rial and a comparatively soft binder metal, like cobalt (Co).

The performance characteristics of carbide are determined by

hardness, transverse rupture strength and fracture toughness.

With regard to their application, important parameters for the

optimisation of these characteristics are the cobalt content and

the grain size of the metal binder phase. The tungsten carbide

grains have an average size of less than 0.2 m up to several

micrometres (m). The cobalt fills the gaps between the car-

bide grains. When extremely high toughness is required, the

cobalt content can amount up to 30%, whereas, for maximum

wear resistance, the cobalt content is reduced and the grain

size decreased to the nano-crystalline range of < 0.2 m.

CERATIZIT produces far more than 100 different carbide gra-

des, thus offering a customised solution for every application.

info@ceratizit.su

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