Stress Development during Constrained Sintering of Alumina/Glass/Alumina Sandwich Structure

Stress development during the constrained sintering of a sandwich structure of alumina/glass/alumina has been studied. Stress distribution in the glass layer was calculated using a finite element method. The shear stress exhibited a maximum at the edge of the alumina/glass interface. The in‐plane te...

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Bibliographic Details
Published in:Journal of the American Ceramic Society 2002-02, Vol.85 (2), p.335-340
Main Authors: Tzeng, Shin-Yu, Jean, Jau-Ho
Format: Article
Language:English
Subjects:
Applied sciences
Building materials. Ceramics. Glasses
Ceramic industries
Chemical industry and chemicals
Exact sciences and technology
glass
Miscellaneous
sinter/sintering
stress
Technical ceramics
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Summary:Stress development during the constrained sintering of a sandwich structure of alumina/glass/alumina has been studied. Stress distribution in the glass layer was calculated using a finite element method. The shear stress exhibited a maximum at the edge of the alumina/glass interface. The in‐plane tensile stress, formed during constrained sintering, decreased from the interface of the alumina/glass to the middle of the glass in the z‐direction, but increased from the edge to the center of glass in the x−y direction. This in‐plane tensile stress reduces the driving force of densification, resulting in a larger x−y shrinkage and higher densification in the middle of the glass.
ISSN:0002-7820
1551-2916
DOI:10.1111/j.1151-2916.2002.tb00093.x