Completed research projects at the Institute for Materials Science

[uncategorized]

• Aluminiumlegierungen mit angepasstem Schmelzintervall für das prozessintegrierte Ausschäumen beim Strangpressen

  The aim of this project is to develop the basics for the direct foaming of hollow structures made of aluminum alloys by means of composite extrusion. The outer structural material of these components takes over force distribution, corrosion protection, as well as acting tensile forces, while the internal foam material increases the bending stiffness, damping properties, and energy absorption of the system. For instance, such extruded, foam-filled structures can advantageously be used in the automotive industry as crash profiles. Nevertheless, process-integrated foam-filled structures or foam structures with a dense cover layer are not yet used industrially in mass production, despite their superior property spectrum. This could be due to the limited freedom of design in the production of foam-filled components with dense cover layers, in addition to elaborate additional operations required during their manufacturing process, such as additional foaming, manipulation, and joining processes

  Year: 2017

  Funding: DFG

  Duration: 05/2017-01/2021
• Herstellung und Applikation thermoplastumhüllter Lotpartikel für die löttechnische Fertigung mit pulverförmigen Hartloten AiF-Projekt

  Within the scope of this project, brazing powders coated with a thermoplastic sheath are examined. The purpose of the coating is to fulfill two tasks: On the one hand, the metallic particles are electrically insulated by their coating, so that it is possible to aplly them by means of electrostatic powder coating processes prior to brazing, which is a new method to aplly brazing powders. From a scientific-technical point of view, suitable thermoplastics have to be found and a simple and economical coating process for the brazing powder has to be developed. Substantial technical, economic and ecological advantages can be achieved compared to solvent based brazing pastes. Users of this technology include both brazin powder products manufacturers who are expanding their portfolio and users of brazing technology who are enabled to use the product for new economical solder application processes.

  Year: 2017

  Funding: AiF

  Duration: 01.02.2017-31.01.2019