Measurements of irradiation creep strain in silicon carbide irradiated with silicon ions

S. Kondo, T. Koyanagi, T. Hinoki, O. Hashitomi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The significant internal share stress through the differential swelling will be introduced in the thick structures of nuclear reactors by the tans-thickness temperature gradient. In this work, the irradiation creep in SiC, which is indispensable to mitigate the internal stress, was studied by using ion-irradiation. High purity CVD SiC samples mechanically thinned to 50, 75, and 100 μm were firmly fixed on the curved irradiation base and the tensioned surfaces were irradiated to 0.01-3 dpa at 400, 600, and 800°C. The initial applied stresses at the surface were 150, 225, and 300 MPa, respectively, depending on the sample thickness. The creep strain was estimated from the sample curvature based on comparison with the curvature of sample irradiated under non-stressed condition. Creep strain were strongly dependent on both the applied stress and irradiation temperature, where the approximate linear relationship with swelling rates measured for non-stressed SiC was found for all the irradiation temperatures. Creep strains were also linearly dependent on the applied stress with temperature dependent proportionality constants.

Original languageEnglish
Title of host publicationCeramic Materials for Energy Applications - A Collection of Papers Presented at the 35th International Conference on Advanced Ceramics and Composites, ICACC
PublisherAmerican Ceramic Society
Pages63-69
Number of pages7
Edition9
ISBN (Print)9781118059944
DOIs
Publication statusPublished - 2011 Jan 1
Externally publishedYes
EventCeramic Materials for Energy Applications - 35th International Conference on Advanced Ceramics and Composites, ICACC - Daytona Beach, FL, United States
Duration: 2011 Jan 232011 Jan 28

Publication series

NameCeramic Engineering and Science Proceedings
Number9
Volume32
ISSN (Print)0196-6219

Other

OtherCeramic Materials for Energy Applications - 35th International Conference on Advanced Ceramics and Composites, ICACC
CountryUnited States
CityDaytona Beach, FL
Period11/1/2311/1/28

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

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