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TRL 7

Layered coatings can improve or lend new properties to products and components. In order to produce layers, numerous different methods are currently available. The laser- and plasma-assisted coating methods used by the research group LASER AND PLASMA PROCESSING are made possible by specific physical and chemical processes, which occur during the interaction of a solid surface with laser beams or plasmas (ionized gas that consists of neutral gas atoms, ions and mobile electrons). The layers created range in thickness from a few nanometers to a few micrometers and can be applied to metallic, ceramic and polymeric base materials and composites. One of our core areas of expertise is in low-temperature coatings that can enable the production of the coatings at nearly room temperature.

MEDICINE

Optimization of polyurethane human implant surfaces (artificial heart) by biocompatible coatings to prevent thrombosis formation.

INDUSTRY

Coating of plastic gears with diamond like carbon (DLC) to improve wear resistance and reduce friction.

PLANT ENGINEERING

Using plasma-assisted chemical vapor deposition (PACVD) in order to deposit thin layers directly from the plasma. A mechanism for coating the inner surface of tubing makes it possible to apply layers of polymer to inner surfaces of hoses and pipes. In a combined plasma system, planar substrates and three-dimensional components can be treated on the surface by: plasma etching, activation, coating and fluoridation.

COATING MATERIALS

The functional coatings, which are only a few nanometers to a few micrometers thick and can be applied to metals, ceramics, plastics and composites, are desirable for their biocompatible, antibacterial, anti-adhesive (non-stick), adhesive, sensory, catalytic, tribological, wear-resistant, decorative, optical, electronic, electrical, anti-corrosive, gas-permeable or impermeable, or dielectric characteristics according to the different applications in which they are used.

3D print & coat – 3D-printed plastic surfaces with wear protection coating

In this project, laser sintering facilities for additive plastics manufacturing are being improved by our partner Laser Sinter Service LSS, and 3D-printing processes (laser sintering) for fibre-reinforced plastics are being developed by our partner RPD for optimally reproducible fatigue behaviour and coatability (high rigidity and smooth surface topography). Our research activities are focused on this production chain, which is becoming increasingly important in the industry with respect to the development of tough, error-tolerant, low-friction wear-protection coatings (based on a bionic material concept with nacre as a model). The required higher coating rates are achieved through regulation via RFID temperature sensors in vacuum sputter processes in order to avoid thermal damage to polymers (at max. process temperatures <70°C).

We offer laser processing services based on in-depth materials expertise and develop processes tailored to the component properties.

  • Advice in laser processing regarding materials, construction and design
  • Process development in the fields of laser welding, laser alloying and (3D) laser cladding
  • Support in the development of plant concepts and process transfer into serial production
  • Process optimisation and quality assurance following a successful integration in production processes
  • Laser beam diagnostics
  • Physical deposition methods in high vacuum
    Laser and plasma-assisted deposition methods from the gas phase (physical vapour deposition – PVD, pulsed laser deposition – PLD, plasma assisted chemical vapour deposition – PACVD)

Generally, our services include the development, characterization and production of functional layers and range from problem analyses, literature research and feasibility studies on to prototype creation and small series coating production. In the context of technology transfer projects, we support our partners in the placement and establishment of coating processes in-house.

KET:
PHOTONICS, BIOTECHNOLOGY,
MICRO- AND NANOELECTRONICS

JOANNEUM RESEARCH

Forschungsgesellschaft mbh
Franz Pichler Straße 30     8160 Weiz, AUSTRIA
Phone +43 316 876-3000
materials@joanneum.at
www.joanneum.at/materials
Contact: Dr. Dieter Nees
dieter.nees@joanneum.at