CERODEM® DLC Race

CERODEM® DLC Race

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Combination of high wear resistance with low friction and high load-bearing capacity

Diamond-like carbon (DLC) coatings are very well suited to the toughest wear conditions and high sliding speeds - even without conventional lubrication. Friction losses are minimised, making them the ideal coating for highly stressed components of all kinds.

A substructure with a PVD layer provides additional resistance to various wear mechanisms. Many applications utilise the excellent sliding properties under multi-layered loads, from automobiles to racing applications.

Specifications

Multilayer PVD-PACVD process
PVD - Multilayer as base layer
A-C:H graded functional layer
Layer thickness:
2 - 5 µm
typ. 2.5 +- 7 µm
Coating temperature
<200°C
(lower temperatures on request)
Part size
up to 350mm D
up to 450mm L
Contact points are required
Partial coating is possible
Internal coating limited
Colour
Grey - Black

Physical properties

Density:
1.8 to 2.3 g/cm3
Thermal expansion:
2 x 10-6 /K
Thermal conductivity:
<200 W/mK
E-modulus:
130-180 +- 10 GPa

Mechanical properties

Excellent resistance to abrasive wear
Excellent resistance to adhesive wear
Resistance to impact load
Optimised for low mating body wear
Hardness (ISO14577)
20-28 GPa
Thermally stable
< 350°C
Residual stress
1-2 GPa Compressive stress
Coefficient of friction
<0.12 dry vs. steel
Inert to acids, alkalis, solvents, salt and water

Industries

  • General mechanical engineering
  • Automotive
  • Plastic mould making
  • Energy and environmental technology
  • Textile industry

Process variants

  • Shrinking coating
  • Low temperature
  • Multi-layer coating with galvanic coatings
  • Variation of the coating hardness
  • Optional mechanical pre-treatment by polishing or blasting