Premium
Shape Distortion and Delamination During Constrained Sintering of Ceramic Stripes: Discrete Element Simulations and Experiments
Author(s) -
Rasp Tobias,
Jamin Christine,
Wonisch Andreas,
Kraft Torsten,
Guillon Olivier
Publication year - 2012
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2011.04939.x
Subject(s) - materials science , delamination (geology) , distortion (music) , sintering , composite material , shrinkage , ceramic , enhanced data rates for gsm evolution , perpendicular , particle (ecology) , substrate (aquarium) , finite element method , discrete element method , cross section (physics) , mechanics , geometry , structural engineering , geology , physics , mathematics , cmos , amplifier , oceanography , computer science , engineering , tectonics , paleontology , telecommunications , quantum mechanics , optoelectronics , subduction
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.