Cavity formation in Tyranno-SA SiCf/SiC composite irradiated with multiple-ion beam at elevated temperatures

H. T. Keng; S. W. Li; S. W. Wu; Ji Jung Kai; Fu Rong Chen; Yutai Katoh; A. Kohyama

doi:10.1016/j.jnucmat.2007.03.087

Cavity formation in Tyranno-SA SiC_f/SiC composite irradiated with multiple-ion beam at elevated temperatures

H. T. Keng, S. W. Li, S. W. Wu, Ji Jung Kai, Fu Rong Chen, Yutai Katoh, A. Kohyama

Materials Science and Technology Div

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

15 Scopus citations

Abstract

The microstructural evolution of Tyranno-SA SiC_f/SiC composite irradiated at 800 °C and 1000 °C was investigated by transmission electron microscopy. The irradiation was performed using multiple-ion beam in order to simulate the D-T fusion reactor environment. In this study, we irradiated SiC_f/SiC composite made from advanced SiC fibers namely, Tyranno-SA, using dual-ion beam (6 MeV Si³⁺ and 1.13 MeV He⁺) and triple-ion beam (6 MeV Si³⁺, 800 keV He⁺, and 280 keV H⁺). The effects of He and H atoms on the cavity formation during irradiation are discussed. Cavities were found mainly on the grain boundary of SiC_f/SiC composite, and cavity coarsening was observed after higher temperature (1000 °C) irradiation. Hydrogen atoms in the SiC_f/SiC composite will enhance cavity nucleation.

Original language	English
Pages (from-to)	753-757
Number of pages	5
Journal	Journal of Nuclear Materials
Volume	367-370 A
Issue number	SPEC. ISS.
DOIs	https://doi.org/10.1016/j.jnucmat.2007.03.087
State	Published - Aug 1 2007

Funding

This work is financially sponsored by the ROC National Science Council under the Project No. NSC 93-2212-E-007-021.

Funders	Funder number
National Science Council	NSC 93-2212-E-007-021

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.jnucmat.2007.03.087

Cite this

@article{ef070a47f5cc447293d20a01464cf25f,

title = "Cavity formation in Tyranno-SA SiCf/SiC composite irradiated with multiple-ion beam at elevated temperatures",

abstract = "The microstructural evolution of Tyranno-SA SiCf/SiC composite irradiated at 800 °C and 1000 °C was investigated by transmission electron microscopy. The irradiation was performed using multiple-ion beam in order to simulate the D-T fusion reactor environment. In this study, we irradiated SiCf/SiC composite made from advanced SiC fibers namely, Tyranno-SA, using dual-ion beam (6 MeV Si3+ and 1.13 MeV He+) and triple-ion beam (6 MeV Si3+, 800 keV He+, and 280 keV H+). The effects of He and H atoms on the cavity formation during irradiation are discussed. Cavities were found mainly on the grain boundary of SiCf/SiC composite, and cavity coarsening was observed after higher temperature (1000 °C) irradiation. Hydrogen atoms in the SiCf/SiC composite will enhance cavity nucleation.",

author = "Keng, {H. T.} and Li, {S. W.} and Wu, {S. W.} and Kai, {Ji Jung} and Chen, {Fu Rong} and Yutai Katoh and A. Kohyama",

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doi = "10.1016/j.jnucmat.2007.03.087",

language = "English",

volume = "367-370 A",

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journal = "Journal of Nuclear Materials",

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T1 - Cavity formation in Tyranno-SA SiCf/SiC composite irradiated with multiple-ion beam at elevated temperatures

AU - Keng, H. T.

AU - Li, S. W.

AU - Wu, S. W.

AU - Kai, Ji Jung

AU - Chen, Fu Rong

AU - Katoh, Yutai

AU - Kohyama, A.

PY - 2007/8/1

Y1 - 2007/8/1

N2 - The microstructural evolution of Tyranno-SA SiCf/SiC composite irradiated at 800 °C and 1000 °C was investigated by transmission electron microscopy. The irradiation was performed using multiple-ion beam in order to simulate the D-T fusion reactor environment. In this study, we irradiated SiCf/SiC composite made from advanced SiC fibers namely, Tyranno-SA, using dual-ion beam (6 MeV Si3+ and 1.13 MeV He+) and triple-ion beam (6 MeV Si3+, 800 keV He+, and 280 keV H+). The effects of He and H atoms on the cavity formation during irradiation are discussed. Cavities were found mainly on the grain boundary of SiCf/SiC composite, and cavity coarsening was observed after higher temperature (1000 °C) irradiation. Hydrogen atoms in the SiCf/SiC composite will enhance cavity nucleation.

AB - The microstructural evolution of Tyranno-SA SiCf/SiC composite irradiated at 800 °C and 1000 °C was investigated by transmission electron microscopy. The irradiation was performed using multiple-ion beam in order to simulate the D-T fusion reactor environment. In this study, we irradiated SiCf/SiC composite made from advanced SiC fibers namely, Tyranno-SA, using dual-ion beam (6 MeV Si3+ and 1.13 MeV He+) and triple-ion beam (6 MeV Si3+, 800 keV He+, and 280 keV H+). The effects of He and H atoms on the cavity formation during irradiation are discussed. Cavities were found mainly on the grain boundary of SiCf/SiC composite, and cavity coarsening was observed after higher temperature (1000 °C) irradiation. Hydrogen atoms in the SiCf/SiC composite will enhance cavity nucleation.

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