Study on compatibility between silicon carbide and solid breeding materials under neutron irradiation

Hirokazu Katsui, A. Hasegawa, Y. Katoh, Y. Hatano, T. Tanaka, S. Nogami, T. Hinoki, T. Shikama

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)288-291
Number of pages4
JournalFusion Science and Technology
Volume60
Issue number1
DOIs
Publication statusPublished - 2011 Jan 1

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Nuclear and High Energy Physics
  • Nuclear Energy and Engineering
  • Materials Science(all)
  • Mechanical Engineering

Fingerprint Dive into the research topics of 'Study on compatibility between silicon carbide and solid breeding materials under neutron irradiation'. Together they form a unique fingerprint.

Cite this