TY - JOUR
T1 - In situ characterization of delamination and crack growth of a CGO–LSM multi-layer ceramic sample investigated by X-ray tomographic microscopy
AU - Bjørk, Rasmus
AU - Esposito, Vincenzo
AU - Lauridsen, Erik Mejdal
AU - Jørgensen, Peter Stanley
AU - Fife, J.L.
AU - Andersen, Kjeld Bøhm
AU - Foghmoes, Søren Preben Vagn
AU - Pryds, Nini
PY - 2014
Y1 - 2014
N2 - The densification, delamination and crack growth behavior in a Ce0.9Gd0.1O1.95 (CGO) and (La0.85Sr0.15)0.9MnO3 (LSM) multi-layer ceramic sample was studied using in situ X-ray tomographic microscopy (microtomography) to investigate the critical dynamics of crack propagation and delamination in a multilayered sample. Naturally occurring defects, caused by the sample preparation process, are shown not to be critical in sample degradation. Instead defects are nucleated during the debinding step. Crack growth is significantly faster along the material layers than perpendicular to them, and crack growth and delamination only accelerates when sintering occurs.
AB - The densification, delamination and crack growth behavior in a Ce0.9Gd0.1O1.95 (CGO) and (La0.85Sr0.15)0.9MnO3 (LSM) multi-layer ceramic sample was studied using in situ X-ray tomographic microscopy (microtomography) to investigate the critical dynamics of crack propagation and delamination in a multilayered sample. Naturally occurring defects, caused by the sample preparation process, are shown not to be critical in sample degradation. Instead defects are nucleated during the debinding step. Crack growth is significantly faster along the material layers than perpendicular to them, and crack growth and delamination only accelerates when sintering occurs.
KW - Sintering
KW - Tomography
KW - Multi-layer
KW - Crack growth
KW - Delamination
U2 - 10.1016/j.jeurceramsoc.2014.04.029
DO - 10.1016/j.jeurceramsoc.2014.04.029
M3 - Journal article
SN - 0955-2219
VL - 34
SP - 3019
EP - 3025
JO - Journal of the European Ceramic Society
JF - Journal of the European Ceramic Society
IS - 12
ER -