Thermal Stresses in SiC-Si3N4 Cubic-Cell-Divided Multi-Particle-Matrix System

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The paper deals with crack formation of thermal stresses in an isotropic multi-particle-matrix system of homogeneously distributed spherical particles in an infinite matrix divided to cubic cells containing a central particle. Originating during a cooling process as a consequence of the difference in thermal expansion coefficients between a matrix and a particle, the thermal stresses are thus investigated within the cubic cell and extreme at the critical particle volume fraction. Resulting from the derived crack formation condition related to an ideal-brittle particle, the critical particle radius considering the critical particle volume fraction is presented along with an application to the thermalstress- strengthened SiC-Si3N4 ceramics.

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Periodical:

Edited by:

J. Dusza, R. Danzer and R. Morrell

Pages:

320-323

DOI:

10.4028/www.scientific.net/KEM.290.320

Citation:

L. Ceniga "Thermal Stresses in SiC-Si3N4 Cubic-Cell-Divided Multi-Particle-Matrix System", Key Engineering Materials, Vol. 290, pp. 320-323, 2005

Online since:

July 2005

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$38.00

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