TY - JOUR

T1 - Exploring the mechanical properties of additively manufactured carbonrich zirconia 3D microarchitectures

AU - Winczewski, J.P.

AU - Zeiler, Stefan

AU - Gabel, S.

AU - Susarrey-Arce, A.

AU - Gardeniers, J.G.E.

AU - Merle, Benoit

N1 - Publisher Copyright: © 2023 The Authors

PY - 2023/7/11

Y1 - 2023/7/11

N2 - Two-photon lithography (TPL) is a promising technique for manufacturing ceramic microstructures with nanoscale resolution. The process relies on tailor-made precursor resins rich in metal–organic and organic constituents, which can lead to carbon-based residues incorporated within the ceramic microstructures. While these are generally considered unwanted impurities, our study reveals that the presence of carbon-rich residues in the form of graphitic and disordered carbon in tetragonal (t-) ZrO 2 can benefit the mechanical strength of TPL microstructures. In order to achieve a better understanding of these effects, we deconvolute the structural and materials contributions to the strength of the 3D microarchitectures by comparing them to plain micropillars. We vary the organic content by different thermal treatments, resulting in different crystal structures. The highest compression strength of 3.73 ± 0.21 GPa and ductility are reached for the t-ZrO 2 micropillars, which also contain the highest carbon content. This paradoxical finding opens up new perspectives and will foster the development of “brick and mortar”-like ceramic microarchitectures.

AB - Two-photon lithography (TPL) is a promising technique for manufacturing ceramic microstructures with nanoscale resolution. The process relies on tailor-made precursor resins rich in metal–organic and organic constituents, which can lead to carbon-based residues incorporated within the ceramic microstructures. While these are generally considered unwanted impurities, our study reveals that the presence of carbon-rich residues in the form of graphitic and disordered carbon in tetragonal (t-) ZrO 2 can benefit the mechanical strength of TPL microstructures. In order to achieve a better understanding of these effects, we deconvolute the structural and materials contributions to the strength of the 3D microarchitectures by comparing them to plain micropillars. We vary the organic content by different thermal treatments, resulting in different crystal structures. The highest compression strength of 3.73 ± 0.21 GPa and ductility are reached for the t-ZrO 2 micropillars, which also contain the highest carbon content. This paradoxical finding opens up new perspectives and will foster the development of “brick and mortar”-like ceramic microarchitectures.

UR - http://www.scopus.com/inward/record.url?scp=85165234976&partnerID=8YFLogxK

U2 - 10.1016/j.matdes.2023.112142

DO - 10.1016/j.matdes.2023.112142

M3 - Article

VL - 232.2023

JO - Materials and Design

JF - Materials and Design

SN - 0264-1275

IS - August

M1 - 112142

ER -