TiAlN-coated implant component made by DOT GmbH

Titanium Aluminium Nitride Coatings (TiAlN)


For generation of the TiAlN coating, the energy transfer of the arc into the target releases titanium and aluminium 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 titanium and aluminium atoms on the implant surface to form the desired TiAlN coating.
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

TiAlN coatings only modify the surface properties. The material properties and biomechanical functionality is not altered by the coating.
  • Colour: dark violet to glossy black/anthracite
  • Coating thickness: 1–6 µm
  • Roughness: ≤ 0.05 µm
  • Adhesive strength: HF 1–3
  • Coating Hardness: ~2,700 HV
  • Wear resistance: high wear resistance towards bone cement
  • Liquid contact angle: Reduction of the liquid contact angle results in improved surface wettability

Charles-Darwin-Ring 1a
18059 Rostock l Germany

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


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