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General

  • Diamond-like carbon (DLC) is any of seven forms of amorphous carbon materials that display some of the unique properties of natural diamond.
  • Carbon films with very high hardness, high resistivity, and dielectric optical properties, are now described as diamond-like carbon or DLC.

Production

  • Several methods have been developed for producing diamond-like carbon films:

    primary ion beam deposition of carbon ions (IBD)

    sputter deposition of carbon with or without bombardment by an intense flux of ions (physical vapour deposition or PVD)

     deposition from an RF plasma, sustained in hydrocarbon gases, onto substrates negatively biased (plasma assisted chemical vapour deposition or PACVD).

Application

  • A wide variety of objects are now being coated, ranging from small items, to large dies and moulds. The rapidly expanding uses of the DLC films developed by the hybrid technique .

  • The coatings may well find their biggest application in enhancing properties of general wear parts.

  • Benefits include: Wear and abrasion resistance , Low Friction , High Hardness , Anti-reflective Coating , Corrosion Resistance , Gas Barrier , Conformal Coating .

Market

  • The world market for diamond, diamond-like, and CBN films reached $473.5 million in 2006. This figure is expected to rise to $530.8 million in 2007 and slightly over $1.0 billion by 2012, a CAGR of 14.3% between 2007 and 2012.

  • The use of diamond-like carbon (DLC) coatings to improve the performance of more complex mechanical components or systems is currently increasing rapidly.

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