The diffusion of carbon into solid iron by heat treatment in a carbon rich atmosphere.
An elevated temperature process by which a ferrous metal absorbs carbon into the surface when exposed to a high-carbon environment. Carbon atoms diffuse into the metal to create a high-carbon zone near the surface.
The introduction of carbon into the surface layer of a steel that has a low carbon content. The process is carried out by heating the components in a solid liquid, or gaseous carbon containing medium. The depth of penetration of carbon into the surface is controlled by the time and temperature of the treatment. After carburising it is necessary to harden the components by heating to a suitable temperature and quenching.