Qualifizierung magnetischer Materialien für die Additive Fertigung (QuamM)
Functional magnetic materials, especially hard and soft magnets, are everywhere in today´s life and are key components in many high-tech technologies. Their increasing material demand requires a most efficient fabrication and utilization of the materials. Highest magnetic performance is found in Rare-Earth-based alloys, specifically in Nd-Fe-B. Magnets from this alloy produced via powder metallurgical sintering reach the highest magnetic energy densities. Our project aims at providing an alternative production route for permanent magnets by Additive Manufacturing. Complex geometries, print-in designs, locally tailored magnetic properties and components with response to external triggers (4D-printing) can be realized while retaining a resource efficient use and fabrication. The two partners, Funktionale Materialien (Prof. Oliver Gutfleisch) and Produktionsmanagement, Technologie und Werkzeugmaschinen (Prof. Matthias Weigold), will bring together materials science and production technology to establish the additive manufacturing of functional magnetic materials.
Additive Fertigung von bleifreien Piezokeramiken (AblPie)
Piezoceramic materials are indispensable in robotics, energy conversion, medical technology, consumer electronics, and autonomous vehicles. However, their increasing use is becoming a large problem as they contain large amounts of toxic lead, which cannot be recycled and ends up as electronic waste. The numerous lead-free piezoceramics developed over the past years fail to reach the high performance of their lead-based counterparts and thus new approaches are required. The aim of this project is to utilize 3D printing to design environmentally-friendly lead-free piezoceramics and composites with improved electromechanical performance to overcome the above stated issues. This task requires a close collaboration between Materials science and Production engineering, whereby the former will develop the material and design the piezoceramic suspensions for the 3D printing process, while the latter will investigate the printing process of multimaterial suspensions and study the thermal treatment of the printed elements. The results will represent the basis for developing the field of additive manufacturing of advanced ceramics at the TU Darmstadt.