Micro- and macroscopic design of alumina ceramics by robocasting

Zongwen Fu, Matthias Freihart, Larissa Wahl, Tobias Fey, Peter Greil, Nahum Travitzky

Research output: Contribution to journalArticle

9 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)3115-3124
Number of pages10
JournalJournal of the European Ceramic Society
Volume37
Issue number9
DOIs
Publication statusPublished - 1 Aug 2017

Fingerprint

Aluminum Oxide
Grain growth
Alumina
Shear deformation
Extrusion
Macros
Nozzles
Sintering
Porosity
Microstructure
Temperature

Keywords

  • Additive manufacturing
  • Heterogeneously textured microstructure
  • Local particle orientation
  • Numerical CFD-Simulation
  • Templated grain growth

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

Cite this

Micro- and macroscopic design of alumina ceramics by robocasting. / Fu, Zongwen; Freihart, Matthias; Wahl, Larissa; Fey, Tobias; Greil, Peter; Travitzky, Nahum.

In: Journal of the European Ceramic Society, Vol. 37, No. 9, 01.08.2017, p. 3115-3124.

Research output: Contribution to journalArticle

Fu, Zongwen ; Freihart, Matthias ; Wahl, Larissa ; Fey, Tobias ; Greil, Peter ; Travitzky, Nahum. / Micro- and macroscopic design of alumina ceramics by robocasting. In: Journal of the European Ceramic Society. 2017 ; Vol. 37, No. 9. pp. 3115-3124.
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