Fraunhofer-Center HTL has methods for developing ceramics and powder-metallurgical materials throughout the entire manufacturing chain. From feedstock preparation, forming and heat treatment to finishing, oxide ceramics, non-oxide ceramics, silicate ceramics, powder metals and fine-grain graphite can be manufactured. We also develop special metal-ceramic composites and hard metals. One special feature at the HTL is 3D-printing with quality-assured procedures. Additive manufacturing can be undertaken as both a slurry based process as well as a powder-bed process. It enables the manufacture of components with complex geometries.
Material development starts with the selection and design of suitable Materials and Additives. For this purpose, comprehensive material and thermodynamic databases are available (see Material design). Using specially developed in-house software, the material properties of multiphase materials with main- and secondary phases as well as pores can be precisely predicted. This microstructure - property simulation is used to optimize the structure of the material (see Material design). The design of ceramic and powder metallurgical parts is performed using finite element methods (see Component design). In particular, thermomechanical loads during component use are minimised in designs suitable for ceramics and using topology optimisation.
Aluminium nitride (AIN), Silicon nitride (Si3N4), Silicon carbide (SiC), Zirconia reinforced aluminium oxide (ZTA), Zirconia (ZrO2), Alumina (Al2O3), Mullite as well as various silicate ceramics, glass ceramics, piezo ceramics, varistor ceramics and electrically conductive ceramics are all examples for successful ceramic developments.