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D.L.C.
Diamond Like Carbon
 

GENERAL DESCRIPTION OF TREATMENT

“Diamond Like Carbon” (DLC) deposition is undoubtedly the most recent and interesting new development in the field of PECVD processes (Plasma Enhanced Chemical Vapour Deposition), as this technology can obtain deposits of amorphous carbon with characteristics similar to a diamond. Deposition is performed inside a vacuum chamber where a gas is delivered, ionised and then brought to the plasma state. In this state, the gas interacts with the surface of the articles placed in the chamber, depositing a layer of amorphous carbon.
The process features low deposition temperatures below 200°C.
Therefore this enables treatment of materials with low melting points, such as aluminium.

 
COATING DISTRIBUTION AND CHARACTERISTICS

The coatings are black, well-adhering and uniform in thickness, with excellent reproduction of the surface to be coated. Coating thicknesses up to 10 µm.
   
PHYSICAL CHARACTERISTICS
 Vickers hardness 4.000 - 6.000 HV
 Friction coefficient (dry and lubricated) similar to Teflon
 Modulus of elasticity 100 - 340 Gpa
 Thermal stability over 400 °C

The coatings also feature optimal chemical resistance (resists alkalis, acids and solvents) and high thermal conductivity.
   
    REACTION TO CORROSION   Very compact and low chemical reactivity coatings offer optimal resistance to corrosion.  
   
COMPATIBLE MATERIALS Steels, heat treated steels, titanium and aluminium alloys, ceramics, electrolytic chrome, electrolytic nickel, chemical nickel, super alloys etc.
   
APPLICATION IN TEXTILE FIELD In the textile field, the use of DLC coatings (e.g. reeds for high speed looms) is not widespread also due to the relative high costs with respect to other traditional coatings. The constant interest and relative development of this technology is however leading to a reduction in costs, thus enabling an increase in use, with the relative benefits of this application.
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