TU Darmstadt / ULB / TUbiblio

Shape Distortion and Delamination During Constrained Sintering of Ceramic Stripes: Discrete Element Simulations and Experiments

Rasp, Tobias and Jamin, Christine and Wonisch, Andreas and Kraft, Torsten and Guillon, Olivier (2012):
Shape Distortion and Delamination During Constrained Sintering of Ceramic Stripes: Discrete Element Simulations and Experiments.
In: Journal of the American Ceramic Society, pp. 586-592, 95, (2), ISSN 00027820,
[Online-Edition: http://dx.doi.org/10.1111/j.1551-2916.2011.04939.x],
[Article]

Abstract

Particle-based simulations using the discrete element method are applied for the sintering of thin ceramic stripes that are constrained by a rigid substrate. The inhibition of lateral particle movement in vicinity of the substrate leads to a preferred shrinkage direction perpendicular to the substrate, which causes shape distortion as well as delamination of the stripe at the interface edges. Multiple processing parameters are varied in simulations to analyze their influence on the mentioned effects. The amount of particle rearrangement and the height to width aspect ratio of the cross-section are identified to be factors that determine the level of shape distortion and edge delamination. The simulation results are compared with measurements of stripes produced by soft micromolding in capillaries. Good accordance is observed regarding parameters like axial and lateral shrinkage or delamination angle.

Item Type: Article
Erschienen: 2012
Creators: Rasp, Tobias and Jamin, Christine and Wonisch, Andreas and Kraft, Torsten and Guillon, Olivier
Title: Shape Distortion and Delamination During Constrained Sintering of Ceramic Stripes: Discrete Element Simulations and Experiments
Language: English
Abstract:

Particle-based simulations using the discrete element method are applied for the sintering of thin ceramic stripes that are constrained by a rigid substrate. The inhibition of lateral particle movement in vicinity of the substrate leads to a preferred shrinkage direction perpendicular to the substrate, which causes shape distortion as well as delamination of the stripe at the interface edges. Multiple processing parameters are varied in simulations to analyze their influence on the mentioned effects. The amount of particle rearrangement and the height to width aspect ratio of the cross-section are identified to be factors that determine the level of shape distortion and edge delamination. The simulation results are compared with measurements of stripes produced by soft micromolding in capillaries. Good accordance is observed regarding parameters like axial and lateral shrinkage or delamination angle.

Journal or Publication Title: Journal of the American Ceramic Society
Volume: 95
Number: 2
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Nonmetallic-Inorganic Materials
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences
Date Deposited: 16 Mar 2012 09:17
Official URL: http://dx.doi.org/10.1111/j.1551-2916.2011.04939.x
Identification Number: doi:10.1111/j.1551-2916.2011.04939.x
Export:

Optionen (nur für Redakteure)

View Item View Item