Artículo
Strength and thermal shock resistance of fiber-bonded Si-Al-C-O and Si-Ti-C-O ceramics
Autor/es | Vera García, María del Carmen
Martínez Fernández, Julián Singh, Mrityunjay Ramírez Rico, Joaquín |
Departamento | Universidad de Sevilla. Departamento de Física de la Materia Condensada |
Fecha de publicación | 2021 |
Fecha de depósito | 2021-12-13 |
Publicado en |
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Resumen | Silicon carbide-based fiber-bonded ceramics, obtained from hot pressing of woven silicon carbide fibers, are a cost-effective alternative to ceramic-matrix composites due to their ease of fabrication, involving few processing ... Silicon carbide-based fiber-bonded ceramics, obtained from hot pressing of woven silicon carbide fibers, are a cost-effective alternative to ceramic-matrix composites due to their ease of fabrication, involving few processing steps, and competitive thermomechanical properties. In this work, we studied the high-temperature strength and thermal shock resistance of Si-Al-C-O and Si-Ti-C-O fiber-bonded SiC ceramics obtained from hot pressing of two types of ceramic fibers, by mechanical testing in four-point bending. The bending strength of Si-Al-C-O-based fiber-bonded ceramics at room temperature is ∼250–260 MPa and remains constant with temperature, while the bending strength of Si-Ti-C-O increases slightly from the initial 220 to ∼250 MPa for the highest temperature. Both materials retain up to 90% of their room temperature strength after thermal shocks of 1400°C and show no reduction in elastic moduli. After thermal shock, failure mode is the same as in the case of as-received materials. |
Identificador del proyecto | MAT2016-76526-R |
Cita | Vera García, M.d.C., Martínez Fernández, J., Singh, M. y Ramírez Rico, J. (2021). Strength and thermal shock resistance of fiber-bonded Si-Al-C-O and Si-Ti-C-O ceramics. International Journal of Applied Ceramic Technology, 1-10. |
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