Irradiation resistance of silicon carbide joint at light water reactor–relevant temperature

T. Koyanagi; Y. Katoh; J. O. Kiggans; T. Hinoki; H. E. Khalifa; C. P. Deck; C. A. Back

doi:10.1016/j.jnucmat.2017.03.017

Irradiation resistance of silicon carbide joint at light water reactor–relevant temperature

T. Koyanagi, Y. Katoh, J. O. Kiggans, T. Hinoki, H. E. Khalifa, C. P. Deck, C. A. Back

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27 Scopus citations

Abstract

Monolithic silicon carbide (SiC) to SiC plate joints were fabricated and irradiated with neutrons at 270–310 °C to 8.7 dpa for SiC. The joining methods included solid state diffusion bonding using titanium and molybdenum interlayers, SiC nanopowder sintering, reaction sintering with a Ti-Si-C system, and hybrid processing of polymer pyrolysis and chemical vapor infiltration (CVI). All the irradiated joints exhibited apparent shear strength of more than 84 MPa on average. Significant irradiation-induced cracking was found in the bonding layers of the Ti and Mo diffusion bonds and Ti-Si-C reaction sintered bond. The SiC-based bonding layers of the SiC nanopowder sintered and hybrid polymer pyrolysis and CVI joints all showed stable microstructure following the irradiation.

Original language	English
Pages (from-to)	150-159
Number of pages	10
Journal	Journal of Nuclear Materials
Volume	488
DOIs	https://doi.org/10.1016/j.jnucmat.2017.03.017
State	Published - May 1 2017

Funding

This research was supported by the U.S. Department of Energy, Office of Nuclear Energy, Light Water Reactor Sustainability Program (grant code: RC0304000), under contract DE-AC05-00OR22725 with Oak Ridge National Laboratory (ORNL) managed by UT-Battelle, LLC. A portion of this research used resources at the High Flux Isotope Reactor, a DOE Office of Science User Facility operated by the ORNL. This work also used resources at the High Temperature Materials Laboratory at ORNL. The lead author was partially supported by the U.S. DOE, Office of Nuclear Energy for the Advanced Fuels Campaign of the Fuel Cycle R&D program under contact DE-AC05-00OR22725 with ORNL managed by UT Battelle, LLC. The authors wish to thank Caen Ang at ORNL for valuable comments of this manuscript.

Funders	Funder number
Office of Nuclear Energy, Light Water Reactor Sustainability Program	DE-AC05-00OR22725, RC0304000
U.S. Department of Energy
Office of Science
Office of Nuclear Energy
Oak Ridge National Laboratory
UT-Battelle

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title = "Irradiation resistance of silicon carbide joint at light water reactor–relevant temperature",

abstract = "Monolithic silicon carbide (SiC) to SiC plate joints were fabricated and irradiated with neutrons at 270–310 °C to 8.7 dpa for SiC. The joining methods included solid state diffusion bonding using titanium and molybdenum interlayers, SiC nanopowder sintering, reaction sintering with a Ti-Si-C system, and hybrid processing of polymer pyrolysis and chemical vapor infiltration (CVI). All the irradiated joints exhibited apparent shear strength of more than 84 MPa on average. Significant irradiation-induced cracking was found in the bonding layers of the Ti and Mo diffusion bonds and Ti-Si-C reaction sintered bond. The SiC-based bonding layers of the SiC nanopowder sintered and hybrid polymer pyrolysis and CVI joints all showed stable microstructure following the irradiation.",

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AU - Koyanagi, T.

AU - Katoh, Y.

AU - Kiggans, J. O.

AU - Hinoki, T.

AU - Khalifa, H. E.

AU - Deck, C. P.

AU - Back, C. A.

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AB - Monolithic silicon carbide (SiC) to SiC plate joints were fabricated and irradiated with neutrons at 270–310 °C to 8.7 dpa for SiC. The joining methods included solid state diffusion bonding using titanium and molybdenum interlayers, SiC nanopowder sintering, reaction sintering with a Ti-Si-C system, and hybrid processing of polymer pyrolysis and chemical vapor infiltration (CVI). All the irradiated joints exhibited apparent shear strength of more than 84 MPa on average. Significant irradiation-induced cracking was found in the bonding layers of the Ti and Mo diffusion bonds and Ti-Si-C reaction sintered bond. The SiC-based bonding layers of the SiC nanopowder sintered and hybrid polymer pyrolysis and CVI joints all showed stable microstructure following the irradiation.

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ER -

Irradiation resistance of silicon carbide joint at light water reactor–relevant temperature

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