Synergistic effects of implanted helium and hydrogen and the effect of irradiation temperature on the microstructure of SiC/SiC composites

The microstructure of near-stoichiometric fiber SiC/SiC composites implanted with He and H ions was studied at implantation temperatures of 1000 and 1300°C. The average size of He bubbles in the CVI SiC matrix decreases with increasing concentration of implanted H ions. Moreover, the number density...

Full description

Saved in:
Bibliographic Details
Published in:Journal of nuclear materials 2004-12, Vol.335 (3), p.508-514
Main Authors: Taguchi, T., Igawa, N., Miwa, S., Wakai, E., Jitsukawa, S., Snead, L.L., Hasegawa, A.
Format: Article
Language:English
Subjects:
Applied sciences
C0200
C0900
Controled nuclear fusion plants
Energy
Energy. Thermal use of fuels
Exact sciences and technology
Fission nuclear power plants
Fuels
H0200
H0400
I0400
Installations for energy generation and conversion: thermal and electrical energy
Nuclear fuels
R0200
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The microstructure of near-stoichiometric fiber SiC/SiC composites implanted with He and H ions was studied at implantation temperatures of 1000 and 1300°C. The average size of He bubbles in the CVI SiC matrix decreases with increasing concentration of implanted H ions. Moreover, the number density of He bubbles increases with increasing irradiation temperature and amount of implanted H. At the irradiation temperature of 1000°C, He bubbles were mainly formed at grain boundary within the matrix. On the other hand, He bubbles were formed both at grain boundaries and within grains at the irradiation temperature of 1300°C. The average size of He bubbles at grain boundaries was much larger than within the grain. The average size of He bubbles in the fiber was smaller than that in the matrix in all cases.
ISSN:0022-3115
1873-4820
DOI:10.1016/j.jnucmat.2004.08.014