Linear volumetric additive manufacturing of zirconia from a transparent photopolymerizable ceramic slurry via Xolography
J.C. Sänger,
N.F. König,
A. De Marzi,
A. Zocca,
G. Franchin,
R. Bermejo,
P. Colombo,
J. Günster
Affiliations
J.C. Sänger
Department of Materials Science, Montanuniversität Leoben, Leoben, Austria; Federal Institute for Materials Research and Testing (BAM), Berlin, Germany; Corresponding author. Federal Institute for Materials Research and Testing (BAM), Berlin, Germany.
N.F. König
xolo GmbH, Berlin, Germany
A. De Marzi
Department of Industrial Engineering, University of Padova, Padova, Italy
A. Zocca
Federal Institute for Materials Research and Testing (BAM), Berlin, Germany
G. Franchin
Department of Industrial Engineering, University of Padova, Padova, Italy
R. Bermejo
Department of Materials Science, Montanuniversität Leoben, Leoben, Austria; Departmentof Materials Science and Engineering, The Pennsylvania State University, USA
P. Colombo
Department of Industrial Engineering, University of Padova, Padova, Italy; Departmentof Materials Science and Engineering, The Pennsylvania State University, USA
J. Günster
Federal Institute for Materials Research and Testing (BAM), Berlin, Germany; Institute of Non-Metallic Materials, Clausthal University of Technology, Clausthal-Zellerfeld, Germany
Advanced ceramics printed with photon-based additive manufacturing deals with anisotropic mechanical properties from the layer-by-layer manufacturing. Motivated by the success in using highly filled transparent slurries containing nanoparticles for powder-based two-photon-polymerization (2PP) for advanced ceramic printing, this works approach is the transfer to Xolography, a volumetric additive manufacturing technology based on linear two-photon excitation and without recoating steps. This paper reports the results of a preliminary investigation optimizing the photocurable slurry to the requirements of Xolography in terms of transparency, over a significantly larger mean free path, compared to 2PP. A feedstock filled with 70 % weight fraction of ceramic particles (∼30 vol%) exhibiting an exceptionally high degree of transparency in the relevant wavelength range of 400–800 nm was prepared from 5 nm zirconia nanoparticles. The high transparency of the photocurable slurry is attributed to the near-monomodal particle size distribution of the zirconia nanoparticles used.
