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Article Dans Une Revue Journal of the European Ceramic Society Année : 2022

Digital light processing stereolithography of zirconia ceramics: Slurry elaboration and orientation-reliant mechanical properties

Résumé

Digital Light Processing (DLP) is a promising technique for the preparation of ceramic parts with complex shapes and high accuracy. In this study, 3 mol% yttria-stabilized tetragonal zirconia polycrystal (Y-TZP) UV-curable slurries were prepared and printed via DLP. Two different solid loadings (40.5 and 43.6 vol%, respectively) and printing directions were investigated to assess the influence of these parameters on physical and mechanical properties of the sintered parts. Zirconia samples were sintered at 1550 • C for 1 h, achieving a very high relative density (99.2%TD), regardless of solid loading and printing direction. FE-SEM micrographs shown a homogeneous and defect-free cross section with an average grains size of 0.56 ± 0.19 µm. Finally, mechanical properties were influenced by printing direction and zirconia vol%. Indeed, the composition with the higher solid loading (i. e. 43.6 vol%) had the highest three-point flexural strength (751 ± 83 MPa) when tested perpendicular to the printing plane.
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Dates et versions

hal-03799002 , version 1 (06-10-2022)

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Bartolomeo Coppola, Julien Schmitt, Tanguy Lacondemine, Caroline Tardivat, Laura Montanaro, et al.. Digital light processing stereolithography of zirconia ceramics: Slurry elaboration and orientation-reliant mechanical properties. Journal of the European Ceramic Society, 2022, 6, 42, pp.2974 - 2982. ⟨10.1016/j.jeurceramsoc.2022.01.024⟩. ⟨hal-03799002⟩

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