Effect of He pre-implantation and neutron irradiation on mechanical properties of SiC/SiC composite

Shuhei Nogami, Akira Hasegawa, Lance L. Snead, Russell H. Jones, Katsunori Abe

Research output: Contribution to journalConference article

7 Citations (Scopus)

Abstract

Mechanical property changes of SiC/SiC (Hi-Nicalon/C/SiC) composite caused by uniform He pre-implantation up to about 170 at.ppm at 400-800 °C followed by neutron irradiation up to about 7.7×1025 n/m2 (En0.1 MeV) at 800 °C in HFIR were investigated by the three-point bend tests and nano-indentation tests. Degradation of the composite bend properties due to neutron irradiation was observed. The hardness increased after neutron irradiation for both the SiC-matrix and the Hi-Nicalon fiber. There was almost no change in the elastic modulus of the SiC-matrix, but there was an increase in the modulus of the Hi-Nicalon fiber after neutron irradiation. He pre-implantation had almost a negligible effect on the mechanical properties of the composite specimen.

Original languageEnglish
Pages (from-to)577-581
Number of pages5
JournalJournal of Nuclear Materials
Volume329-333
Issue number1-3 PART A
DOIs
Publication statusPublished - 2004 Aug 1
EventProceedings of the 11th Conference on Fusion Research - Kyoto, Japan
Duration: 2003 Dec 72003 Dec 12

ASJC Scopus subject areas

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

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