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Constrained Sintering of a Glass Ceramic Composite: I. Asymmetric Laminate
Author(s) -
Ollagnier JeanBaptiste,
Guillon Olivier,
Rödel Jürgen
Publication year - 2010
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.1551-2916.2009.03346.x
Subject(s) - materials science , composite material , sintering , microstructure , cracking , ceramic , layer (electronics) , elastic modulus , substrate (aquarium) , porosity , composite number , geology , oceanography
The camber of asymmetric laminates has been experimentally measured and predicted. Two cases are distinguished: (i) sintering of a viscous layer on a viscous substrate and (ii) sintering of a viscous layer on an elastic substrate. In the first case, particular attention is paid to the microstructure of the shrinking layer: a gradient in porosity as well as in pore size has been found along the thickness. Microstructural observations have been rationalized through an asymmetric stress state in the shrinking layer. In the second case, substrate cracking is predicted as function of Young's modulus and thickness ratio of the elastic substrate.