10/09/2024
Pulverroute für Keramik durch transparente Nanopartikelsuspensionen

Source: BAM

Two-Photon-Polymerization (2PP) allows for the highest resolution of all additive manufacturing (AM) technologies. At BAM the technology was successfully adapted to the powder-route of technical ceramics by implementing transparent nanoparticle suspensions as particle source.

The mechanical properties of 2PP-printed ceramics are close to the theoretical strengths of the materials used, as the extremely fine structuring virtually eliminates fracture-inducing defects. The structures can dissipate energy upon mechanical pressure. This is made possible by the lower sintering temperature, the freedom in design by additive manufacturing and the sub-micron resolution of 2PP. New degrees of freedom are created for the material to dissipate energy and to undergo plastic deformation. As a result, the fine structuring creates new material properties, a so-called meta-material.

Microplastic behavior of 2PP-printed ceramics
Johanna C. Sänger, Birte Riechers, Brian R. Pauw, Robert Maaß, Jens Günster
Journal of the American Ceramic Society: Volume 107, Issue 10