Role of irradiation-induced defects on SiC dissolution in hot water

Sosuke Kondo, Shinichiro Mouri, Yoshihiro Hyodo, Tatsuya Hinoki, Fumihisa Kano

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

An enhancement of the dissolution of high-purity 3C-SiC in hot water (320 °C, 20 MPa: relevant to the light-water reactor coolant condition) is demonstrated after 5.1 MeV Si-ion irradiation. Optical spectrometry and Kelvin force microscopy revealed the creation of interband-defect localized states within the bandgap. The dissolution rate was found to be dependent on the irradiation fluence, irradiation-induced volume expansion, and the photoluminescence quenching. An annealing study showed prevention of irradiation-enhanced dissolution with the recovery of most defects. These results show that the dissolution rates of irradiated SiC are increased with the population of irradiation-induced defects.

Original languageEnglish
Pages (from-to)402-407
Number of pages6
JournalCorrosion Science
Volume112
DOIs
Publication statusPublished - 2016 Nov 1
Externally publishedYes

Keywords

  • A. Ceramic
  • B. Ion implantation
  • B. SEM
  • C. High temperature corrosion
  • C. Reactor conditions

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Science(all)

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