The creep mechanism of ceramic matrix composites at low temperature and stress, by a material science approach

Autor: G. Boitier, Jean-Christophe Sangleboeuf, Gaëlle Farizy, Jean Vicens, S. Darzens, J. L. Chermant
Přispěvatelé: LAboratoire de Recherche en Mécanique Appliquée (LARMAUR), Université de Rennes (UR)-Centre National de la Recherche Scientifique (CNRS), Structure des interfaces et fonctionnalités des couches minces (SIFCOM), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Normandie Université (NU)-Université de Caen Normandie (UNICAEN), Normandie Université (NU)
Rok vydání: 2002
Předmět:
Materials science
Scanning electron microscope
[PHYS.MECA.GEME]Physics [physics]/Mechanics [physics]/Mechanical engineering [physics.class-ph]
[SPI.MECA.MSMECA]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Materials and structures in mechanics [physics.class-ph]
02 engineering and technology
Ceramic matrix composite
01 natural sciences
[PHYS.MECA.MEMA]Physics [physics]/Mechanics [physics]/Mechanics of materials [physics.class-ph]
Stress (mechanics)
Matrix (mathematics)
0103 physical sciences
Materials Chemistry
Ceramic
Composite material
010302 applied physics
[PHYS.MECA]Physics [physics]/Mechanics [physics]
[PHYS.MECA.MSMECA]Physics [physics]/Mechanics [physics]/Materials and structures in mechanics [physics.class-ph]
[SPI.MECA]Engineering Sciences [physics]/Mechanics [physics.med-ph]
021001 nanoscience & nanotechnology
[SPI.MECA.GEME]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Mechanical engineering [physics.class-ph]
Mechanism (engineering)
Creep
visual_art
Ceramics and Composites
visual_art.visual_art_medium
0210 nano-technology
Zdroj: Journal of the European Ceramic Society
Journal of the European Ceramic Society, 2002, 22 (14-15), Soc Espanola Ceram \& Vidrio; European Ceram Soc; Amer Ceram Soc; CeramEOLEOLSoc Japan; European Commiss Res DG; United Engn Fdn; USA Res Off; NatlEOLEOLSci Fdn; Off Ind Technol; US DOE, Oak Ridge Natl Lab; European OffEOLEOLAerosp Res \& Dev; USAF Off Sci Res; Minist Ciencia \& Technol; JuntaEOLEOLAndalucia; Univ Sevilla. ⟨10.1016/S0955-2219(02)00103-6⟩
Journal of the European Ceramic Society, Elsevier, 2002, 22 (14-15), Soc Espanola Ceram \& Vidrio; European Ceram Soc; Amer Ceram Soc; CeramEOLEOLSoc Japan; European Commiss Res DG; United Engn Fdn; USA Res Off; NatlEOLEOLSci Fdn; Off Ind Technol; US DOE, Oak Ridge Natl Lab; European OffEOLEOLAerosp Res \& Dev; USAF Off Sci Res; Minist Ciencia \& Technol; JuntaEOLEOLAndalucia; Univ Sevilla. ⟨10.1016/S0955-2219(02)00103-6⟩
ISSN: 0955-2219
DOI: 10.1016/s0955-2219(02)00103-6
Popis: International audience; This paper deals with the creep mechanism for ceramic matrix composites reinforced by long ceramic fibers in a ceramic or glass-ceramic matrix, tested at low stresses (< 400 MPa) and low temperatures, respectively < 1673 K for the former and < 1373 K for the latter. The macroscopic results give few ideas on the mechanism, but observations at different scales until high resolution evidence brittle damages which lead the authors to use the damage mechanics approach and to demonstrate that a damage creep mechanism is operating for these CMCs in two steps: (1) matrix microcrack development until its saturation, (2) followed by the opening of some of these microcracks enabling under certain conditions creep of the SiC fibers which bridge the microcracks. This was enlightened by precise damage observations on stepping creep tests and by their quantification with automatic image analysis. (C) 2002 Elsevier Science Ltd. All rights reserved.
Databáze: OpenAIRE
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