Additive manufacturing of 3D yttria-stabilized zirconia microarchitectures
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in: Materials and Design, Jahrgang 238.2024, Nr. February, 112701, 01.02.2024.
Publikationen: Beitrag in Fachzeitschrift › Artikel › Forschung › (peer-reviewed)
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TY - JOUR
T1 - Additive manufacturing of 3D yttria-stabilized zirconia microarchitectures
AU - Winczewski, J.P.
AU - Zeiler, Stefan
AU - Gabel, S.
AU - Maestre, D.
AU - Merle, Benoit
AU - Gardeniers, J.G.E.
AU - Susarrey-Arce, A.
N1 - Publisher Copyright: © 2024 The Author(s)
PY - 2024/2/1
Y1 - 2024/2/1
N2 - The additive manufacturing (AM) of yttria-stabilized zirconia (YSZ) microarchitectures with sub-micrometer precision via two-photon lithography (TPL), utilizing custom photoresin containing zirconium and yttrium monomers is investigated. YSZ 3D microarchitectures can be formed at low temperatures (600 °C). The low-temperature phase stabilization of ZrO 2 doped with Y 2O 3 demonstrates that doping ZrO 2 with ≈ 10 mol% Y 2O 3 stabilizes the c-ZrO 2 phase. The approach does not utilize YSZ particles as additives. Instead, the crystallization of the YSZ phase is initiated after printing, i.e., during thermal processing in the air at 600 °C – 1200 °C for one and two hours. The YSZ microarchitectures are characterized in detail. This includes understanding the role of defect chemistry, which has been overlooked in TPL-enabled micro-ceramics. Upon UV excitation, defect-related yellowish-green emission is observed from YSZ microarchitectures associated with intrinsic and extrinsic centers, correlated with the charge compensation due to Y 3+ doping. The mechanical properties of the microarchitectures are assessed with manufactured micropillars. Micropillar compression yields the intrinsic mechanical strength of YSZ. The highest strength is observed for micropillars annealed at 600 °C, and this characteristic decreased with an increase in the annealing temperature. The deformation behavior gradually changes from ductile to brittle-like, correlating with the Hall–Petch strengthening mechanism.
AB - The additive manufacturing (AM) of yttria-stabilized zirconia (YSZ) microarchitectures with sub-micrometer precision via two-photon lithography (TPL), utilizing custom photoresin containing zirconium and yttrium monomers is investigated. YSZ 3D microarchitectures can be formed at low temperatures (600 °C). The low-temperature phase stabilization of ZrO 2 doped with Y 2O 3 demonstrates that doping ZrO 2 with ≈ 10 mol% Y 2O 3 stabilizes the c-ZrO 2 phase. The approach does not utilize YSZ particles as additives. Instead, the crystallization of the YSZ phase is initiated after printing, i.e., during thermal processing in the air at 600 °C – 1200 °C for one and two hours. The YSZ microarchitectures are characterized in detail. This includes understanding the role of defect chemistry, which has been overlooked in TPL-enabled micro-ceramics. Upon UV excitation, defect-related yellowish-green emission is observed from YSZ microarchitectures associated with intrinsic and extrinsic centers, correlated with the charge compensation due to Y 3+ doping. The mechanical properties of the microarchitectures are assessed with manufactured micropillars. Micropillar compression yields the intrinsic mechanical strength of YSZ. The highest strength is observed for micropillars annealed at 600 °C, and this characteristic decreased with an increase in the annealing temperature. The deformation behavior gradually changes from ductile to brittle-like, correlating with the Hall–Petch strengthening mechanism.
KW - 3D printing
KW - Additive manufacturing
KW - Micromechanics
KW - Photoluminescence
KW - Yttria-stabilized zirconia
UR - http://www.scopus.com/inward/record.url?scp=85184666072&partnerID=8YFLogxK
U2 - 10.1016/j.matdes.2024.112701
DO - 10.1016/j.matdes.2024.112701
M3 - Article
VL - 238.2024
JO - Materials and Design
JF - Materials and Design
SN - 0264-1275
IS - February
M1 - 112701
ER -