TY - JOUR
T1 - Study on compatibility between silicon carbide and solid breeding materials under neutron irradiation
AU - Katsui, Hirokazu
AU - Hasegawa, Akira
AU - Katoh, Y.
AU - Hatano, Y.
AU - Tanaka, T.
AU - Nogami, S.
AU - Hinoki, T.
AU - Shikama, T.
N1 - Funding Information:
This work was supported by Japan-US cooperation program TITAN sponsored by Japan-MEXT and US-DOE, and was partially supported by a Grant-in-Aid for JSPS Fellows No. 20-7118 from the Japan Society for the Promotion of Science (JSPS).
Publisher Copyright:
© 2011, Taylor and Francis Inc. All rights reserved.
PY - 2011
Y1 - 2011
N2 - Compatibility of monolithic silicon carbide (SiC) with ternary lithium ceramics (Li1-x AlO2-y, Li2-x TiO3-y, Li2-xZrO3-y and Li4-xSiO4-y) under irradiation of neutrons at high temperatures was studied. Disk samples of SiC in contact with sintered ternary lithium ceramics were irradiated in High Flux Isotope Reactor (HFIR) at 800 °C to 5.9 displacements per atom (dpa). Chemical reactions of SiC as determined by appearance of the surface were relatively less significant for the systems of SiC/Li1-x AlO2-y and SiC/Li2-x TiO3-y, whereas some bonding likely due to chemical reaction between SiC and the lithium ceramics and broken samples were observed in the systems of SiC/Li2-x ZrO3-y and SiC/Li4-xSiO4-y . The effect of lithium burnup due to the (n, α) nuclear reaction was also examined by using samples of lithium ceramics whose lithium ratio was hypo-stoichiometric in the fabrication process. More reaction products were observed on the surface of β-SiC in contact with Li1-x AlO2-y having the lower lithium ratio (Li/Al). It was considered that the formation of LiAl5 O8 phase due to lithium loss could deteriorate the compatibility of the SiC-Li1-x AlO2-y system.
AB - Compatibility of monolithic silicon carbide (SiC) with ternary lithium ceramics (Li1-x AlO2-y, Li2-x TiO3-y, Li2-xZrO3-y and Li4-xSiO4-y) under irradiation of neutrons at high temperatures was studied. Disk samples of SiC in contact with sintered ternary lithium ceramics were irradiated in High Flux Isotope Reactor (HFIR) at 800 °C to 5.9 displacements per atom (dpa). Chemical reactions of SiC as determined by appearance of the surface were relatively less significant for the systems of SiC/Li1-x AlO2-y and SiC/Li2-x TiO3-y, whereas some bonding likely due to chemical reaction between SiC and the lithium ceramics and broken samples were observed in the systems of SiC/Li2-x ZrO3-y and SiC/Li4-xSiO4-y . The effect of lithium burnup due to the (n, α) nuclear reaction was also examined by using samples of lithium ceramics whose lithium ratio was hypo-stoichiometric in the fabrication process. More reaction products were observed on the surface of β-SiC in contact with Li1-x AlO2-y having the lower lithium ratio (Li/Al). It was considered that the formation of LiAl5 O8 phase due to lithium loss could deteriorate the compatibility of the SiC-Li1-x AlO2-y system.
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U2 - 10.13182/FST11-A12367
DO - 10.13182/FST11-A12367
M3 - Article
AN - SCOPUS:84865774958
SN - 1536-1055
VL - 60
SP - 288
EP - 291
JO - Fusion Science and Technology
JF - Fusion Science and Technology
IS - 1
ER -