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Radiation induced microstructure and mechanical property evolution of SiC/C/SiC composite materials

  • Oak Ridge National Laboratory
  • Rensselaer Polytechnic Institute

Research output: Contribution to journalArticlepeer-review

42 Scopus citations

Abstract

Chemically vapor deposited (CVD) SiC/C/Nicalon composites have been neutron irradiated in both HFIR and FFTF from 1 to 15 dpa and have been ion beam damaged with 3 MeV carbon ions to 30 dpa in a temperature range from room temperature to 900°C. Following room temperature carbon irradiation amorphization occurred in both the CVD SiC and Nicalon fiber with measured amorphization thresholds of 15 and 1 dpa, respectively. Elastic modulus and hardness have been measured for both the ion beam and neutron irradiated materials. The CVD SiC showed a significant decrease in modulus and hardness following irradiation while the Nicalon fibers modulus and hardness increased.

Original languageEnglish
Pages (from-to)560-565
Number of pages6
JournalJournal of Nuclear Materials
Volume191-194
DOIs
StatePublished - 1992

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