ZrN-coated knee component made by DOT GmbH

Zirkonium Nitride Coatings (ZrN)


For generation of the ZrN coating, the energy transfer of the arc into the target releases zirconium atoms, ionises them and accelerates them through the applied voltage towards the implant. During the process, nitrogen is introduced into the vacuum chamber. The nitrogen atoms combine with the zirconium atoms on the implant surface to form the desired ZrN coating.

ZrN-coated components
Range of Application
  • Orthopaedic implant components
  • Surgical instruments
  • Rotating instruments
Advantages of the Procedure
  • Higher wettability with synovial fluid
  • Low friction articulation
  • Long-term chemical stability
  • Outstanding coating adhesion

ZrN coatings only modify the surface properties. The material properties and biomechanical functionality is not altered by the coating.

Colour: light gold
Coating thickness: 1–6 µm
Roughness Ra: ≤ 0.05 µm
Adhesive strength HF: 1–3
Coating hardness: ~2,500 HV

Charles-Darwin-Ring 1a
18059 Rostock l Germany

Phone: +49 381- 4 03 35-0
Fax: +49 381- 4 03 35-99


© 2018 DOT GmbH. All Rights Reserved.