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Abstract : The creep of glass-containing ceramics is outlined, with particular reference to data for sintered silicon nitride. We conclude that there are 2 important mechanisms. These are viscous flow, and dissolution-precipitation creep. The models for these processes are reviewed, and are compared with experimental data for Si3N4. At low strains and moderate temperatures ≤ 1250 °C, viscous flow controls the creep behaviour. However, we find evidence for dissolution-precipitation creep at 1325 °C.





Autor: D. Wilkinson M. Chadwick

Fuente: https://hal.archives-ouvertes.fr/



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