Journal
JOURNAL OF NUCLEAR MATERIALS
Volume 540, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.jnucmat.2020.152375
Keywords
SiC; Neutron irradiation; Mechanical properties; Fiber; Interphase
Funding
- US Department of Energy (DOE) Office of Fusion Energy Sciences, Fusion Materials Science program [DE-AC05-00OR22725]
- UT-Battelle LLC
- US DOE Office of Nuclear Energy, Advanced Fuel Campaign [DE-AC05-00OR22725]
- UT-Battelle
- National Institutes for Quantum and Radiological Science and Technology [NFE-10-02779]
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Silicon carbide (SiC) ceramic-based composites continue to be attractive material options for fusion in-vessel components and fission reactor core structures because of their exceptional high-temperature capability and favorable neutronic properties. As performance data accumulates, the limitations of the current generation of nuclear-grade SiC composites are becoming more apparent. These limitations mainly involve strength degradation during high-dose neutron irradiation. This paper discusses several options for improving the performance of the next generation of SiC composites to enhance the radiation resistance, along with new experimental results on neutron irradiation resistance. The main emphasis is on the selection of the fibers and the design and development of alternative interphase layers for advanced composites. (C) 2020 Elsevier B.V. All rights reserved.
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