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Pyrolytic Carbon Coating

Coating with pyrolytic carbon (PyC) is a very individual type of coating, compared to other available methods for improving surface properties.

The main difference is that the same element is used for the coating - carbon. Therefore no other element or chemical substance is introduced and chemically pure carbon products can be produced.

Pyrolytic carbon is usually produced by a CVD reaction, by depositing amorphous carbon, from solid or gaseous hydrocarbons on the surface of graphite parts. This treatment bonds to the surface and homogeneously coats the part surfaces, with the ability to cover and fill small surface pores to a certain extent. The surface of the pyrolytic carbon is smooth, hard and more abrasion resistant than the original graphite.

Main advantages

  • production of chemically pure parts possible
  • higher wear resistance of surface
  • lower gas permeability

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