Progress in development of SiC-based joints resistant to neutron irradiation

Takaaki Koyanagi; Yutai Katoh; Tatsuya Hinoki; Charles Henager; Monica Ferraris; Salvatore Grasso

doi:10.1016/j.jeurceramsoc.2019.10.055

Progress in development of SiC-based joints resistant to neutron irradiation

Takaaki Koyanagi, Yutai Katoh, Tatsuya Hinoki, Charles Henager, Monica Ferraris, Salvatore Grasso

Research output: Contribution to journal › Article › peer-review

26 Scopus citations

Abstract

This study fills a knowledge gap regarding neutron-irradiation resistance of SiC joints for nuclear applications, by investigating high-dose neutron irradiation effects on the strength of selected joints and low-dose neutron irradiation effects on recently developed joints fabricated by state of the art processing methods. The joining methods used for the high-dose radiation study included pressure-assisted liquid-phase sintering (LPS) of SiC nanopowder, pressureless calcia-alumina glass ceramics joining, and reaction sintering of Ti-Si-C powders with hot-pressing. The joints were neutron-irradiated at 530 °C to 20 displacements per atom (dpa). Other joining methods included low-pressure LPS of cold-pressed SiC green body, pressureless reaction sintered Ti-Si-C powder joint, spark plasma–sintered Ti diffusion bond, and hot-pressed Ti diffusion bond, which were irradiated at ∼500 °C to ∼2 dpa. There was no notable degradation of torsional strengths of the joints following the high-dose irradiation. The irradiation-induced degradation at low neutron dose was highly dependent on joint type.

Original language	English
Pages (from-to)	1023-1034
Number of pages	12
Journal	Journal of the European Ceramic Society
Volume	40
Issue number	4
DOIs	https://doi.org/10.1016/j.jeurceramsoc.2019.10.055
State	Published - Apr 2020

Funding

The work was supported by the US Department of Energy, Office of Fusion Energy Sciences, under contract DE-C05-00OR22725 with 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 Oak Ridge National Laboratory. The authors wish to thank Frederick Wiffen and Peter Mouche at ORNL for valuable comments for this manuscript. The work was supported by the US Department of Energy, Office of Fusion Energy Sciences , under contract DE-C05-00OR22725 with 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 Oak Ridge National Laboratory . The authors wish to thank Frederick Wiffen and Peter Mouche at ORNL for valuable comments for this manuscript.

Funders	Funder number
DOE Office of Science
Office of Fusion Energy Sciences
US Department of Energy
UT-Battelle LLC
Fusion Energy Sciences	DE-C05-00OR22725
Oak Ridge National Laboratory

Keywords

Joining
Neutron irradiation
Silicon carbide

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10.1016/j.jeurceramsoc.2019.10.055

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title = "Progress in development of SiC-based joints resistant to neutron irradiation",

abstract = "This study fills a knowledge gap regarding neutron-irradiation resistance of SiC joints for nuclear applications, by investigating high-dose neutron irradiation effects on the strength of selected joints and low-dose neutron irradiation effects on recently developed joints fabricated by state of the art processing methods. The joining methods used for the high-dose radiation study included pressure-assisted liquid-phase sintering (LPS) of SiC nanopowder, pressureless calcia-alumina glass ceramics joining, and reaction sintering of Ti-Si-C powders with hot-pressing. The joints were neutron-irradiated at 530 °C to 20 displacements per atom (dpa). Other joining methods included low-pressure LPS of cold-pressed SiC green body, pressureless reaction sintered Ti-Si-C powder joint, spark plasma–sintered Ti diffusion bond, and hot-pressed Ti diffusion bond, which were irradiated at ∼500 °C to ∼2 dpa. There was no notable degradation of torsional strengths of the joints following the high-dose irradiation. The irradiation-induced degradation at low neutron dose was highly dependent on joint type.",

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AU - Ferraris, Monica

AU - Grasso, Salvatore

PY - 2020/4

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KW - Joining

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Progress in development of SiC-based joints resistant to neutron irradiation

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