Robocasting of dense 8Y zirconia parts: Rheology, printing, and mechanical properties. Issue 7 (July 2023)

• Record Type: Journal Article
• Authors: Zhang, Junhui; Yarahmadi, Mona; Cabezas, Laura; Serra, Marc; Elizalde, Sergio; Cabrera, Jose Maria; Llanes, Luis; Fargas, Gemma
• Is Part Of: Journal of the European Ceramic Society. Volume 43:Issue 7(2023)
• Page Start: 2794
• Page End: 2804
• Publication Date: 2023-07
• Subjects: Robocasting -- 8Y-ZrO2 -- Rheology -- Compression strength -- Filament orientation; Ceramic materials -- Periodicals; Composite materials -- Periodicals; Matériaux céramiques -- Périodiques; Composites -- Périodiques; Ceramic materials; Composite materials; Periodicals; Electronic journals; 666.05
• DOI: 10.1016/j.jeurceramsoc.2022.11.042
• Languages: English
• ISSNs: 0955-2219

Abstract

Abstract: Advanced ceramics with complex geometry have become indispensable in engineering applications. Due to limitations of traditional ceramic fabrication processes, additive manufacturing represents a revolution for shaping and consolidation because of its unique capabilities for increasing shape complexity and reducing waste material. Among the additive manufacturing techniques, robocasting is often considered to yield fine and dense ceramic structures with geometrically complex morphology and high strength. Within this context, it is the objective to attain dense 8 mol% yttria-stabilized zirconia (8Y-ZrO2 ) by evaluating the influence of solid loading and filament orientation on the physical and mechanical properties of sintered parts. In doing so, a printable ink was developed using an inverse-thermoresponsive hydrogel. Results revealed that ceramic charges of 67.5 and 70 wt% achieved the best balance regarding density, hardness, and compression strength. Furthermore, rectilinear geometry with a filament orientation at 45º displayed higher mechanical response than 0/90º and cylindrical ones.