In view of possible application of multilayer SiC as oxidation resistant and self-passivating component of re-usable thermal protection systems for space re-entry vehicles, this material was tested in a re-entry simulation chamber. A multilayer SiC laminate was processed by tape casting and pressure less sintering. Both the as-processed multilayer SiC and a similar passivated material, with a surface silica layer obtained by high temperature oxidation, were investigated. The microstructure and the mechanical features of these two materials were compared before and after the re-entry test. Microstructure was investigated by XRD, SEM-EDS, XPS and density measurements. Flexural strength, Young modulus and hardness were measured as well. Oxidation, occurring during re-entry test or resulting from the pre-test oxidation treatment, only affected the external part of the multilayer, while the material core was practically unchanged after oxidation. Every kind of specimen retained almost completely the original mechanical features after 100 re-entry simulations.

Self passivating behavior of multilayer SiC under simulated atmospheric re-entry conditions / Badini, CLAUDIO FRANCESCO; V., Liedtke; G., Euchberger; Celasco, Edvige; Biamino, Sara; Marchisio, Silvia; Pavese, Matteo; Fino, Paolo. - In: JOURNAL OF THE EUROPEAN CERAMIC SOCIETY. - ISSN 0955-2219. - 32:(2012), pp. 4435-4445. [10.1016/j.jeurceramsoc.2012.07.031]

Self passivating behavior of multilayer SiC under simulated atmospheric re-entry conditions

BADINI, CLAUDIO FRANCESCO;CELASCO, EDVIGE;BIAMINO, SARA;MARCHISIO, SILVIA;PAVESE, MATTEO;FINO, Paolo
2012

Abstract

In view of possible application of multilayer SiC as oxidation resistant and self-passivating component of re-usable thermal protection systems for space re-entry vehicles, this material was tested in a re-entry simulation chamber. A multilayer SiC laminate was processed by tape casting and pressure less sintering. Both the as-processed multilayer SiC and a similar passivated material, with a surface silica layer obtained by high temperature oxidation, were investigated. The microstructure and the mechanical features of these two materials were compared before and after the re-entry test. Microstructure was investigated by XRD, SEM-EDS, XPS and density measurements. Flexural strength, Young modulus and hardness were measured as well. Oxidation, occurring during re-entry test or resulting from the pre-test oxidation treatment, only affected the external part of the multilayer, while the material core was practically unchanged after oxidation. Every kind of specimen retained almost completely the original mechanical features after 100 re-entry simulations.
File in questo prodotto:
Non ci sono file associati a questo prodotto.
Pubblicazioni consigliate

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11583/2501696
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo