@article{Meléndez-Martínez_Ramírez de Arellano-López_Jiménez-Melendo_Domínguez-Rodríguez_2001, title={High temperature mechanical behaviour of silicon nitride ceramics}, volume={37}, url={https://revistademetalurgia.revistas.csic.es/index.php/revistademetalurgia/article/view/480}, DOI={10.3989/revmetalm.2001.v37.i2.480}, abstractNote={The high temperature mechanical behaviour of two silicon nitride-based ceramic materials has been studied: N 7202, made by low pressure sintering with yttria, alumina and magnesia as additives, and N 3208, made by high pressure sintering with yttria and alumina as additives. Both materials are β-silicon nitride. The results have been analysed in terms of the classical creep equation. The stress exponent was n = 0.4 for N 7202 and n = 0.5 for N 3208, whereas the average apparent activation energy was Q ≈ 500 kJ/mole for both materials.Transmission electron microscopy studies have allowed to determine the microstructural features of these materials.}, number={2}, journal={Revista de Metalurgia}, author={Meléndez-Martínez, J. J. and Ramírez de Arellano-López, A. and Jiménez-Melendo, M. and Domínguez-Rodríguez, A.}, year={2001}, month={Apr.}, pages={277–280} }