Fraunhofer Institut für Werkstoff- und Strahltechnik (IWS)

Angebot

At the Fraunhofer IWS the demands of micro material processing are
addressed with frequency multiplying Nd:YAG, fiber lasers and short pulse lasers. The utilization of excimer lasers, Nd:YAG lasers, with and without frequency multiplying as well as CO2 lasers, allows it to influence and process materials with light in the wavelength range from 193 nm - 10.6 µm. The variety of laser types is used for micro material processing in combination with precision processing stations. These allow numerous degrees of freedom in motion for the different process technologies and part handling.

At the IWS there is extensive experience available in the range of microprocessing e.g. of plastics, ceramics, semiconductors, metals as well as biological and biocompatible materials. The processing examples come from the area of micromechanics, microelectronics, microfluidics, sensor technology, textile industry, and life science. Highlights include work in the biological field concerning the functionalisation of polymers for Lab-on-chip systems and of endoscopic stabilizers for minimal invasive surgery. Additional application examples for micro material processing are ceramic nozzles, ultrasonic sensors, magnetic sensors, and elements for microfluidic components.

Main activities are concentrated on joining of metallic and non-metallic as well as CFRP/ metal composites for structural and turbine
components, to heat insulation of rocket engines and last but not least to development and use of unique testing equipment for the measurement of mechanical, thermal shock and thermal cycling properties of highly loadable ceramics, coatings, heat insulation layers and C/SiC-metal composites.

A special engagement is focused on the development and industrial application of advanced laser beam welding technologies for the effective welding of metallic 3D-structural components, to a welding
adopted component design and to the optimization of the mechanical performance of welded structures. For this purpose, the Fraunhofer IWS possesses a worldwide unique laser beam welding station with a
working space of 10 m x 3.5 m x 1 m with two 3D-movable laser welding heads for simultaneous both side welding, an integrated 3Dmovable clamping device, a seam following and detection system as well as integrated measures for weld quality assurance.

Core Competence:
Research Institute

Specializations:
Laser Materials Processing
Nanotechnology
Microsystems Technology

Business Fields:
Semiconductor Industry
Automotive Industry
Medical Technology
Equipment
Aerospace


Research focus:

- laser materials processing: joining, cutting, removal, structuring, cladding and surface treatment – in particular laser welding for the manufacturing of gear units and power train components, laser welding of non-metals and compounds, highspeed and remote cutting, systems technology and processes for laser hardening and cladding of tools and parts, micro and nano structuring, process simulation

- surface and layer technology: thermal spraying, chemical surface technology, PVD, CVD and nano technologies – in particular development of storage materials, lowfriction super-hard films, functional layers, systems technology, process monitoring

- materials technology: characterization of structures, testing of materials and components

The Fraunhofer-Institut für Werkstoff- und Strahltechnik IWS Dresden focuses on application-oriented research and development, covering all steps: starting with physical- and material-technological basic knowledge and ending with holistic systems development.
We bundle our strength on laser technology (laser welding, cutting, coating, hardening, cleaning) and on surface technology (laser build up welding, thin film technology, nanoparticle technology).
Our competences in the area of energy storage technologies are:
• New materials and processes for the efficient production of electrical energy storage devices,
• Production of nanomaterials for new battery and supercap electrodes,
• Processes for the deposition of coatings for the fabrication of battery and supercap electrodes,
• Laser cutting of electrodes and separators,
• Processes for the joining of current arrestors and contacts in cell production,
• Cell packaging.

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