The knowledge of the catalycity of a material is of extreme importance to determine accurately the heat flux at the wall which is one of the main parameters needed to make the sizing of a thermal protection. Because catalycity is likely to change during flight, the knowledge of this property and its evolution with aging are also necessary for reusable heat shields. The Institute for Problems in Mechanics has developed a facility with induction plasma technology which allows the measurement of catalycity and the determination of its evolution with aging. Test campaign has been performed at this facility on Aerospatiale C/C material coated with PAO BA1 (silicon carbide based coating), to measure its catalycity and the influence of aging. Results of this campaign and link with the material surface structure and composition are discussed here.
Influence of aging upon catalycity of C/C material protected against oxidation
Einfluß der Alterung auf die Katalysefähigkeit eines gegen Oxidation geschützten C/C-Materials
1994
8 Seiten, 19 Bilder, 6 Tabellen, 6 Quellen
Conference paper
English
Influence of Ageing upon Catalycity of C/C Material Protected against Oxydation
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