Title :
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
fDate :
30 Sep-5 Oct 1995
Abstract :
The physico-chemical stability of SiC/SiC fiber ceramic composite (SiC/SiCf) 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;
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
DOI :
10.1109/FUSION.1995.534379
