Micro- and macroscopic design of alumina ceramics by robocasting

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 language	English
Pages (from-to)	3115-3124
Number of pages	10
Journal	Journal of the European Ceramic Society
Volume	37
Issue number	9
DOIs	https://doi.org/10.1016/j.jeurceramsoc.2017.03.052
Publication status	Published - 1 Aug 2017

Keywords

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

ASJC Scopus subject areas

Ceramics and Composites
Materials Chemistry

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10.1016/j.jeurceramsoc.2017.03.052

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@article{482405223ed8415fa8f67bf03ea031c9,

title = "Micro- and macroscopic design of alumina ceramics by robocasting",

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.",

keywords = "Additive manufacturing, Heterogeneously textured microstructure, Local particle orientation, Numerical CFD-Simulation, Templated grain growth",

author = "Zongwen Fu and Matthias Freihart and Larissa Wahl and Tobias Fey and Peter Greil and Nahum Travitzky",

year = "2017",

month = aug,

day = "1",

doi = "10.1016/j.jeurceramsoc.2017.03.052",

language = "English",

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pages = "3115--3124",

journal = "Journal of the European Ceramic Society",

issn = "0955-2219",

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TY - JOUR

T1 - Micro- and macroscopic design of alumina ceramics by robocasting

AU - Fu, Zongwen

AU - Freihart, Matthias

AU - Wahl, Larissa

AU - Fey, Tobias

AU - Greil, Peter

AU - Travitzky, Nahum

PY - 2017/8/1

Y1 - 2017/8/1

N2 - 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.

AB - 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.

KW - Additive manufacturing

KW - Heterogeneously textured microstructure

KW - Local particle orientation

KW - Numerical CFD-Simulation

KW - Templated grain growth

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EP - 3124

JO - Journal of the European Ceramic Society

JF - Journal of the European Ceramic Society

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