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General
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Diamond-like carbon (DLC) is any of seven forms of amorphous
carbon materials that display some of the unique properties of
natural diamond.
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Carbon
films with very high hardness, high resistivity, and dielectric
optical properties, are now described as diamond-like carbon or
DLC.
Production
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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
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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 .
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The
coatings may well find their biggest application in enhancing
properties of general wear parts.
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Benefits include: Wear and
abrasion resistance , Low Friction , High Hardness ,
Anti-reflective Coating , Corrosion Resistance , Gas Barrier ,
Conformal Coating .
Market
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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.
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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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