Physico-chemical stability of SiC/SiC fiber ceramic composite after exposure to fusion-relevant conditions

Author

Donato, A. ; Casadio, S. ; Coppola, R. ; Scafe, E.

Author_Institution

Associazione EURATOM, ENEA, Rome

Volume

2

fYear

1995

fDate

30 Sep-5 Oct 1995

Firstpage

940

Abstract

The physico-chemical stability of SiC/SiC fiber ceramic composite (SiC/SiC_f) in contact with Li₂O in fusion-relevant conditions has been experimentally studied at 800°C in flowing helium (0.1 L/min) containing either 0.1% H₂ or 100 ppm H₂O and for exposure times of up to 4032 h. The exposed SiC/SiC specimens have been characterized. The results obtained demonstrate that although the surface coating of the specimens is strongly attacked through chemical corrosion processes, the main physico-chemical characteristics of SiC/SiCf are affected to a limited extent only in the case of He+0.1% H₂ flowing gas, the bulk material not being attacked

Keywords

ceramics; corrosion; fibre reinforced composites; fusion reactor materials; fusion reactors; silicon compounds; 4032 hour; 800 C; SiC-SiC; SiC/SiC fiber ceramic composite; bulk material; chemical corrosion processes; fusion-relevant conditions; physico-chemical stability; surface coating; Ceramics; Coatings; Corrosion; Fusion reactors; Helium; Hydrogen; Lithium compounds; Neutrons; Silicon carbide; Stability;

fLanguage

English

Publisher

ieee

Conference_Titel

Fusion Engineering, 1995. SOFE '95. Seeking a New Energy Era., 16th IEEE/NPSS Symposium

Conference_Location

Champaign, IL

Print_ISBN

0-7803-2969-4

Type

conf

DOI

10.1109/FUSION.1995.534379

Filename

534379