Synthesis of carbon coating and carbon matrix for C/C composites based on a hydrocarbon in its supercritical state
Langue
EN
Article de revue
Ce document a été publié dans
Journal of Supercritical Fluids. 2017-09-01, vol. 127, p. 41-47
Résumé en anglais
This study addressesa new process for the fabrication of a C/C composite for aeronautic and aerospace industries.The infiltration of a carbon fibrous preform by means of a hydrocarbon in the supercritical fluid state ...Lire la suite >
This study addressesa new process for the fabrication of a C/C composite for aeronautic and aerospace industries.The infiltration of a carbon fibrous preform by means of a hydrocarbon in the supercritical fluid state is carried out at high temperaturein order to get a carbon matrix.The selected hydrocarbon is methane. The microstructure of the pyrocarbon coatingis characterized by opticalmicroscopy, Transmission Electron Microscopy and Raman Micro-Spectroscopy. The experimental parameters (temperature, hydrocarbon pressure, residence time) are tuned in order to improvethe carbon matrixyield. The feasibility of a dense composite from a precursor in its supercritical state, reducing the infiltration duration as compared to Chemical Vapor Infiltration(CVI), is demonstrated< Réduire
Mots clés en anglais
Supercritical fluid
Chemical vapor deposition (CVD)
Chemical vapor infiltration (CVI)
C/C composites
Unités de recherche