Diamond-like Carbon (DLC) Market to Perceive Substantial Growth During 2025
Diamond-like
Carbon or DLC consists of carbon atoms with sp3 bonding. It has high
mechanical hardness, chemical inertness, and optical transparency.
DLC coating has been garnering interest from the industry and
research world since the last two decades. The unique properties of
DLC make it a fascinating and commercially essential coating material
for various industrial applications. Currently, it is used in various
industrial applications including critical engine parts, mechanical
face seals, scratch-resistant glasses, invasive and implantable
medical devices, microelectromechanical systems, razor blades, and
magnetic hard discs. Presence of certain elemental species such as
hydrogen, nitrogen, sulfur, silicon, titanium, and fluorine plays a
significant role in the properties of DLC.
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The
notable tribological properties of DLC depend upon the
micro-structures, amount of hydrogen present, and ratio of sp2 to sp3
carbon atoms. Ratio of sp2 to sp3 carbon atoms defines two types of
DLC: pure (pure DLC) and mixed (mixed DLC). Concentration of sp3
carbon atoms is high in pure DLC. A blend of sp2 and sp3 bonded
carbon atoms can be observed in mixed DLC with random intermixing of
cubic and hexagonal lattices. Deposition methods of DLC include ion
beam, sputtering, cathodic arc, pulsed laser deposition, and plasma
enhanced chemical vapor deposition. In most technologies, ions are
used to deposit elements on various material substrates.
Rise
in demand for DLC coating in automotive engine components is
projected to drive the global DLC market. DLC coatings are largely
employed in diesel fuel injectors, automotive tappets, rocker arms,
differential gears, valve lifters, wrist pins, and door hinges. DLC
coatings help increase the shelf life of automotive engine components
by decreasing the coefficient of friction. Reduction in friction
lowers the need for lubrication. This improves efficiency in the
supply chain, from raw materials to end-users. The high load bearing
properties of DLC coatings make them an ideal choice for improving
the performance of engineered components. Increase in demand for
advanced coatings with high abrasion resistance acts as a major
driver of the global DLC market.
Rise
in demand for DLC coatings in the medical industry owing to the high
biocompatibility is also a key factor boosting the DLC market. Demand
for DLC based coatings with exceptionally hard, low friction, and
bio-inert characteristics is high in biomedical components. DLC
coatings possess these properties. They help prevent leaching of
metallic ions to the automotive body parts. DLC is used in
applications in orthopedics, cardiovascular components, guide wires,
etc. in the medical industry owing to its biocompatible nature.
Manufacturers
are focusing on the production of hydrogen-free DLC that can be
employed in automotive and biomedical applications. Superior abrasion
and wear resistance are the key factors driving the demand for
hydrogen-free DLC. Hydrogen-free DLC coatings improve binding with
engine oil and result in the formation of a firm ultra-low friction
film when special oil additives are added. Usage of advanced
technologies such as plasma enhanced CVD and pulsed laser deposition
is anticipated to propel the applications of DLCs. Potential
applications in the personal care sector, such as razor blades and
skin wrinkling treatments, are estimated to offer attractive growth
opportunities to the global DLC market. Similarly, electronics
sector, with the advancements in MEMS technology, is expected to act
as a potential end-user industry of the DLC market in the near
future.
Emission
of Carbon dioxide is the key factor intensifying the global warming
effect. DLC is typically a coating which is a layer made up of carbon
atoms. It may combine with oxygen and emit carbon dioxide.
Regulations on the emission of carbon dioxide are getting stricter in
developed regions such as Europe and North America. Thus,
implementation of stringent regulations on the emission of carbon
dioxide is likely to hamper the global DLC market. Poor adhesion of
DLC coatings onto substrates is also expected to adversely affect the
DLC market. However, advancement in ultrathin layer coating
technologies is anticipated to help the market overcome the
challenges mentioned above.
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The
DLC market in Europe is dominated by a few large manufacturers such
as Oerlikon Group, Morgan Advanced Materials Plc., Miba AG, and
Renishaw Advanced Materials Ltd. These companies have production
bases in the U.K., Germany, Belgium, and Austria. Constant research
activities in automotive, electronics, and medical industries is
likely to create new opportunities for DLC manufacturers. According
to the RoHS guidelines, medical device manufacturers are focusing on
moving toward greener engineering technologies such as DLC coating
materials, as these are biocompatible and can work in a wide range of
temperatures. Manufacturers are striving to obtain competitive
advantage in the DLC market by introducing highly advanced
technologies such as plasma assisted chemical vapor deposition and
pulsed laser deposition. Discovery of self-healing DLC, which
produces ultra-thin film with high performance characteristics, is
anticipated to provide an attractive growth platform for the DLC
market in the near future. New product launches, brand promotions,
and mergers & acquisitions are also estimated to boost the demand
for DLC market in the near future.
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