Preparation of ceramic materials using supercritical fluid chemical deposition
HENRY, Lucile
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
Laboratoire des Composites Thermostructuraux [LCTS]
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Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
Laboratoire des Composites Thermostructuraux [LCTS]
HENRY, Lucile
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
Laboratoire des Composites Thermostructuraux [LCTS]
< Leer menos
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
Laboratoire des Composites Thermostructuraux [LCTS]
Idioma
en
Article de revue
Este ítem está publicado en
Journal of Supercritical Fluids. 2018-11, vol. 141, p. 113-119
Elsevier
Resumen en inglés
This paper relates an unconventional technique based on the supercritical fluid technology for manufacturing dense ceramic matrix composites, which is known as the Supercritical Fluid Chemical Deposition process (SFCD). ...Leer más >
This paper relates an unconventional technique based on the supercritical fluid technology for manufacturing dense ceramic matrix composites, which is known as the Supercritical Fluid Chemical Deposition process (SFCD). By using a conventional precursor in a solvent above its critical coordinates, it is possible to faster the deposition rate of a SiC-based matrix on fibrous preforms in comparison to the Chemical Vapor Deposition technique for which a low pressure (1–50 kPa) is recommended for a similar range of temperatures 800–1000 °C (mixture N2: tetramethylsilane 99.2:0.8 vol.%). The microstructure of the coating or matrix is characterized by optical microscopy, Spectroscopy Electron Microscopy and Electron Dispersive X-ray spectroscopy. The influence of the main experimental parameters (temperature, pressure, residence time) is studied on the chemical composition of the ceramic deposits. The opportunity to tune the C:SiC molar ratio opens the door towards multilayered interfaces exhibiting multifunctional properties.< Leer menos
Palabras clave en inglés
SiC
Carbon Supercritical fluid chemical deposition (SFCD)
Supercritical fluid chemical infiltration (SFCIn)
Chemical vapor infiltration (CVI)
Orígen
Importado de HalCentros de investigación