3D printing: Technical Ceramics

The Fraunhofer-Center HTL manufactures prototypes and small series of technical ceramics with a CeraFab 7500 printer of the Lithoz GmbH. This unit produces the ceramic component in layers by stereolithography and LCM methods (Layerwise Ceramic Manufacturing). A photosensitive ceramic slurry is selectively irradiated through an exposure mask with light in the visible range and thereby hardened. The additively produced green parts  are subsequently debindered and sintered to a dense technical ceramic.

By applying these additive manufacturing methods, it is possible to produce filigree and complex ceramic components in one piece. Expensive post-processing steps can be minimized or avoided altogether this way. The printed parts have a high density, mechanical stability and surface quality, and nevertheless complex geometrical structures.

At Fraunhofer-Center HTL, the scope of services for the generative manufacturing of ceramics ranges from 3D CAD-based part design and construction through 3D printing of first plastic samples up to feasibility studies and the additive manufacturing of ceramic components. The scope is completed by the possibility of component-specific optimization of debinding and sintering processes by ThermoOptical Measurement methods (TOM) (see Raether, F.: Parameters of Inherently Homogeneous Sintering Processes // see Ziebold, H.; Raether, F.; Seifert, G.: Radical Time Reduction of Debinding Processes by Combined in-situ Measurements and Simulation // see Raether, F.: The kinetic field - a versatile tool for prediction and analysis of heating processes).

Specifications CeraFab 7500

Lateral resolution:                     40 μm (635 dpi)

Film thickness:                          25 μm (corresponding vertical resolution)

Construction speed (X, Y, Z):     76 mm x 43 mm x 150 mm

Building speed:                         2,5 - 10 mm per hour

Available Materials:

  • Aluminium oxide
  • 3 mol .-% yttrium stab. Zirconium oxide

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