Micro- and macroscopic design of alumina ceramics by robocasting. Issue 9 (August 2017)

• Record Type: Journal Article
• Authors: Fu, Zongwen; Freihart, Matthias; Wahl, Larissa; Fey, Tobias; Greil, Peter; Travitzky, Nahum
• Is Part Of: Journal of the European Ceramic Society. Volume 37:Issue 9(2017)
• Page Start: 3115
• Page End: 3124
• Publication Date: 2017-08
• Subjects: Additive manufacturing -- Templated grain growth -- Local particle orientation -- Heterogeneously textured microstructure -- Numerical CFD-Simulation; 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.2017.03.052
• Languages: English
• ISSNs: 0955-2219

Abstract

Abstract: The manufacturing of alumina ceramics with auxetic and macro-cellular lattice structure and with textured microstructure was achieved by using robocasting and TGG-technique (Templated Grain Growth). After sintering at different temperatures a grain growth effect was observed in robocast ceramic filaments, which showed a microstructural gradient in particle orientation and porosity from the edge to the middle. The particle orientation during robocasting was analytically and numerically investigated by calculating the inhomogeneous shear rate distribution in the extrusion nozzle.