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GRAPHITE FOR DIAMOND LIKE CARBON - DLC COATING

Diamond Like Carbon (DLC) coatings are perfectly suited to withstand extreme wear conditions and high sliding speeds, so that no lubricant additives are required.

Low-friction DLC coatings for tribologically stressed components and tools

Diamond-like carbon layers, amorphous hydrogen-based or hydrogen-free forms of carbon for excellent mechanical, optical, electrical, chemical and tribological properties of coatings. 

PROPERTIES

  • Process temperature <200 ° C

  • Layer thickness 1-10 µm

  • Low coefficient of friction

  • High wear resistance

  • High hardness

  • High elasticity

  • Non-stick properties

ADVANTAGES

  • Can be deposited on many materials

  • Reduced friction losses

  • Corrosion Resistant

  • Adjustable electrical conductivity

  • Excellent lubricity

  • Decrease in adhesion

applications

  • Metal forming

  • Decorative applications

  • Drive elements

  • Sealing elements

  • Bearing elements

  • Piston and cylinder

  • Razors and trimmers 

  • Mechanical hygiene articles

  • Cutting tools

  • Saw blades for composite materials

DELIVERY FORM

  • Planar and circular sputtering targets

  • Arc cathodes

  • Different grain sizes

  • Low ash content

DLC modifications for every application

Graphit Eigenschaften
DLC Anwendungen

Diamond-like carbon coatings (DLC) for coatings with excellent properties for use under extreme conditions

The term "DLC" is commonly used to denote the hydrogen-based form of diamond-like carbon (aC: H), while the term "taC" (tetrahedral amorphous carbon)  is used for the hydrogen-free amorphous carbon, which contains high proportions of sp3-hybridized carbon.  

Diamond-like carbon coatings (DLC) reduce friction losses and are therefore often used for fuel injection systems, valve trains and pistons.  In addition to these motor components, DLC and taC are used in compressors, pumps, bearing shells and rollers and from the textile to the medical industry. 


Metal forming, interior design and decorative applications, compressors, centrifugal pumps and motors, automotive injection machines, toiletries such as hair clippers, razors and trimmers are the main uses of DLC and taC coatings.  

Standard applications are a thing of the past,
unique and outstanding coating results are now in demand.

Tailor-made alloys for specific and demanding applications and 

of course also standard sizes in the form of individual offers.

Alloyed graphite targets
for improved layer properties

In addition to the pure graphite sputter targets / ARC cathodes, special mixtures can also be produced on a small scale according to customer requirements.

Convincing results could be achieved by doping pure graphite with boron, tungsten, silver, gold, tantalum and titanium, for example with bipolar plates for PEM fuel cells.

alloyed carbon coatings

INNOVATIVE COATINGS
TO MEET THE HIGH MARKET AND CUSTOMER REQUIREMENTS

Numerous companies achieve remarkable improvements in the performance of tools and components through the coating materials and auxiliaries optimized by Avaluxe.

Results and experiences from projects:  

  • Due to their extreme hardness, taC and DLC layers allow excellent resistance to abrasion, wear and oxidation in the event of tribological stress.

  • HiPIMS applications: By using low-friction, hydrogen-free DLC layers on loom combs  and air jet nozzles in the textile industry, the service life of the substrates is significantly increased.

  • For increasing the adhesive properties on sharp woven plates  Graduated stresses and alloy proportions were used.

  • Similar coatings are also used in watch gears and high-performance motors in transport and container trucks. 

  • With suitable doping, a thermal stability of up to ~ 475 ° C for ta-C and 250 ° C for DLC is achieved while maintaining their inherent properties such as chemical inertness, biocompatibility and oxidation resistance. 

  • Binary and ternary carbon-based alloys make coatings possible that offer high wear and abrasion resistance, high smoothness, high hardness with reduced brittleness, anti-reflective properties and corrosion-resistant effects.   

  • The introduction of foreign elements for the production of doped DLC or taC nanocomposites improves the coating properties for specific applications. 

  • An intermediate buffer layer is essentially used for the deposition of carbon layers, since it reduces the interfacial tension and improves the adhesion of the layer to the substrate.

  • The choice of the buffer layer also contributes to other layer properties, from electrical resistance to biocompatibility and lubrication to corrosion protection.  

WE DELIVER AFTER

YOUR INDIVIDUAL REQUIREMENTS

Let us know your specifications and you will receive an individual offer

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Expertise PVD Materialien