Durable Diamond-Like Carbon (DLC) Coatings
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Faster DLC coating process, harder surfaces
VT Diamond coatings feature low friction, excellent wear resistance, and a dark gray to near-black color. The unique VaporTech plasma-enhanced chemical vapor deposition DLC process can coat complex geometries.
Plasma-Enhanced Chemical Vapor Deposition (PE-CVD) available in all VaporTech® Systems creates our popular VT- DLC (or a-C:H). In the VT-Series coaters bond this coating using a Physical Vapor Deposition (PVD) metal adhesion layer of Zirconium (Zr), Titanium (Ti) or Chromium (Cr). Alternately, plasma-enhanced chemical vapor Deposition (PE-CVD) process creates the bonding layer with a silicon-based precursors in both the VT-Series and Cadence systems. DLC coatings combines low friction and high hardness for applications requiring easy release or low sliding wear like engine components, medical devices, dies, molds and firearms. Moreover, these DLC coatings have a rich, neutral, black color that enhances product appearance and value.
Table of coating properties:
|Color Range (CIELAB, D65)||L* = 45 – 50, a* = -1.0 – +1.0, b* = -1 – +1.0|
|Coating Hardness||15 – 23 GPa (1500 – 2300 Hv)|
|Thickness Range||1.0 – 10.0 µm|
|Deposition Rate||1-3 µm/hr|
|Coefficient of Friction (COF)||0.08 – 0.11 (dry; against alumina)|
|Wear Rate (Pin-on-Disk)||1.8×10-7 (mm3/N-m)|
DID YOU KNOW?
DLC film friction coefficient against
polished steel ranges from