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Constrained Sintering of Alumina Thin Films: Comparison Between Experiment and Modeling
Author(s) -
Guillon Olivier,
Aulbach Emil,
Rödel Jürgen,
Bordia Rajendra K.
Publication year - 2007
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.1551-2916.2007.01650.x
Subject(s) - isotropy , materials science , anisotropy , sintering , shrinkage , composite material , thin film , coating , nanotechnology , optics , physics
Alumina thin films deposited by dip coating on alumina substrates were sintered between 1150° and 1350°C. A new measuring system using a rocking arm as a mechanical amplifier allows in situ measurement of the shrinkage of the film. Comparison of experimental densification behavior with the predictions of the isotropic continuum mechanics model (using values of constitutive parameters determined by sinter forging) highlights the inadequacy of the isotropic models. These results, together with other published evidence, provide justification to consider anisotropic models.