Carbotec-DLC/DLN - coatings

…the smooth difference

Who is Carbotec?

Company founded 11/2015 by
- Paul Stumpf : Owner / General Manager company P.O.S.
- Marc Sercu : Owner / General Manager company Nano4S
- Dan Schumacher : General Manager company P.O.S.
Development & construction of own PACVD DLC/DLN deposition and de-coating vacuum furnaces – start of production: 03/2017
Production in cleanroom in separated operating room inside the company P.O.S. Plasma Oberflächen Service GmbH
Technical sales, order processing, goods receipt & dispatch, quality control, surface preparation etc. by experienced employees of P.O.S.
Carbotec is not a subsidiary company of P.O.S. – legally separated and independent companies

DLC-coatings

There is a huge number of DLC coatings with different properties and for different applications:

Reduction of friction
Corrosion protection
Milling of graphite and reinforced composites
Nonferrous metal forming
Grease free production with plastic injection molds
…

We chose the most applicable DLC coating for your application.

Not always „Harder“ = „better“!

Carbotec coating process

Process fully automated and remotely accessible via TeamViewer
- Operator doesn’t has to be on-site to supervise process
Process log-data stored for every single batch

De-coating

Carbotec DLC/DLN coatings are resistant to chemicals and have an amorphous structure: Plasma technology needed for de-coating.
De-coating capacity: At multi-cavity tools it can become an issue to de-coat a lot of parts in a short period of time.
Carbotec de-coater is build in same size as DLC-coater to enable quick de-coating of multiple mold parts

The de-coating of carbon based coatings is difficult and imbedding the risk of over etching the surfaces. Carbotec has significantly improved this technic.

De-coating quality “past”

De-coating quality “Carbotec”

What is Carbotec DLC/DLN?

DLC-coatings (a-C:H) : Diamond Like Carbon
DLN-coatings (a-C:H:X) : Diamond Like Nanocomposite (doped DLC-coating)
Due to embedding additional elements further reduction of friction and sticking:
- DLN LF (Low Friction) : Reduction of friction down to 0,05 (vs 100Cr6)
- DLN LS (Low Sticking) : Reduction of sticking / wettability
DLC-coatings combinable with DLN-coatings – Example:
- DLC/DLN LF for thread cores
- DLC/DLN LS for blow molds
Coating stack: pure-Titan PVD-primer 0.2-0.4µm followed by an amorphous DLC respectively DLN coating up to the coating surface
Clean room production – therefore reduced amount of dust defects

Clean room production

Properties Carbotec DLC/DLN

No breaking-in characteristic (no wear debris)
Grease free usage of coated components (considering the application conditions: friction partner,
roughness, hardness basis material….)
Extremely reduced surface tension (Teflon 18mN/m – DLN LS 23mN/m)
Corrosion protection (with limitations: defects, roughness…)
Chemical inert – resistant vs acids, leaches…)
No roughness increase due to DLC/DLN coating!
Biocompatible
Electric insulating
Damage free de-coating
Precise partial coating possible

Coating adhesion

measured with Rc indent 150kg

Ti-DLC Butan

Ti-DLN-DLC Toluol:

Coating stack

Calo-grinding of a Carbotec DLC / DLN LS coating

0.3µm – Ti-adhesion layer
0.9µm – DLN transition layer
1.9µm – DLC layer
2.6µm – DLN LS layer

Coating structure (…the smooth difference)

Scanning electron microscope (SEM) pictures of coating fracture

Carbotec DLC – SEM 5.000-fold

Competitor DLC – SEM 5.000-fold

Carbotec DLC – SEM 10.000-fold

Competitor DLC – SEM 10.000-fold

Coating friction

Ball-on-Disc test to evaluate coefficient of friction (COF)

Coating type: Carbotec DLC

Coating type: Carbotec DLC/DLN LF

DLC-coater

PVD / PACVD set-up:
- PVD magnetron sputter for applying adhesion layer
- PACVD process to deposit DLN or/and DLC coatings using 4 different gases/liquids to allow homogeneous coating spread on wide scale substrate geometries
PACVD filament technology: 4 filament positioned in different heights at chamber wall to ionize carbon gases relates to
- Higher process safety at filament fracture
- Improved coating spread even though loading height of 1.000 mm!

DLC Coater

Potential applications

Plastic injection molding
- Ejector /-sleeves
- Thread cores
- Mold inserts / cores
- Sliders
Metering pumps
Blow molds
Nonferrous metal forming
Mechanical engineering (shafts, cranks, pistons…)
Sinter tools (Powder pressing)
Food processing
Engine- and Valve-Train-components (pistons, tappets…)
In combination with Fortis-diffusion excellent cold welding protection for many other applications

Carbotec DLC/DLC Data

	DLC	DLN LS	DLN LF	DLC/DLN LS	DLC/DLN LF
Hardness HV0.05	3.000 HV	1.300 HV	1.800 HV	3.000 HV	3.000 HV
Friction (vs. 100Cr6)	0.1-0.15	0.15	0.03-0.05	0.15	0.03-0.05
Thickness	2-3µm	2-3µm	2-3µm	2-3µm	2-3µm
Prozesstemperature	200°C	200°C	200°C	200°C	200°C
Applicationtemperature	300°C	400°C	400°C	300°C	300°C
Colour	black	black	black	black	black

Max substrate size: D 750 * 1.000mm
Max substrate weight: 500kg

Coating certificates

Cytotoxic investigation related to FDA demands
Harmlessness authentication for utilization of Carbotec coatings to be used in food applications or even implants

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Carbotec DLC GmbH

Berghausen 1
D-42859 Remscheid

Tel. : 02191 / 386999
Fax. : 02191 / 39060
Mobil: 0151 / 402 18 710

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