Gas permeability of SiC/SiC composites as fusion reactor material

Y. Hirohata; T. Jinushi; Y. Yamauchi; M. Hashiba; T. Hino; Y. Katoh; A. Kohyama

doi:10.1016/S0920-3796(02)00153-9

Gas permeability of SiC/SiC composites as fusion reactor material

Y. Hirohata, T. Jinushi, Y. Yamauchi, M. Hashiba, T. Hino, Y. Katoh, A. Kohyama

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

43 Scopus citations

Abstract

Permeability of helium gas in SiC/SiC composites material, which is one of the most important properties in application of SiC/SiC composite for first wall and blanket of fusion reactors, was studied by using a vacuum apparatus. Three tubular and two flat plate SiC/SiC composites were prepared by different preparation processes. The measurement of permeability coefficient of helium gas was carried out with pressure ranging from 10² to 10⁵ Pa at room temperature. The permeability coefficient of the SiC/SiC composite largely depended on the preparation method. In three tubular materials, the SiC/SiC composite made by both polymer impregnation and pyrolysis (PIP) and melt infiltration (MI) methods showed the lowest permeability, 9.1 × 10^-7 m²/s, which was approximately two orders of magnitude smaller than one of the material made only by PIP method. The permeability of the flat plate SiC/SiC composites made by both liquid phase sintering (LPS) and hot pressing (HP) was approximately 1.5 × 10^-9 -4.0 × 10^-11 m²/s. The difference of permeability was related to the microscopic structure, i.e. pores and cracks.

Original language	English
Pages (from-to)	699-704
Number of pages	6
Journal	Fusion Engineering and Design
Volume	61-62
DOIs	https://doi.org/10.1016/S0920-3796(02)00153-9
State	Published - Nov 2002
Externally published	Yes

Funding

This work was supported by Core Research for Evolutional Science and Technology (CREST) as a part of R&D of composite Materials for Advanced Energy Systems’ research project.

Funders	Funder number
Core Research for Evolutional Science and Technology

Keywords

Fabrication method
Helium
Permeability
SiC/SiC composite

UN SDGs

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

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10.1016/S0920-3796(02)00153-9

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title = "Gas permeability of SiC/SiC composites as fusion reactor material",

abstract = "Permeability of helium gas in SiC/SiC composites material, which is one of the most important properties in application of SiC/SiC composite for first wall and blanket of fusion reactors, was studied by using a vacuum apparatus. Three tubular and two flat plate SiC/SiC composites were prepared by different preparation processes. The measurement of permeability coefficient of helium gas was carried out with pressure ranging from 102 to 105 Pa at room temperature. The permeability coefficient of the SiC/SiC composite largely depended on the preparation method. In three tubular materials, the SiC/SiC composite made by both polymer impregnation and pyrolysis (PIP) and melt infiltration (MI) methods showed the lowest permeability, 9.1 × 10-7 m2/s, which was approximately two orders of magnitude smaller than one of the material made only by PIP method. The permeability of the flat plate SiC/SiC composites made by both liquid phase sintering (LPS) and hot pressing (HP) was approximately 1.5 × 10-9 -4.0 × 10-11 m2/s. The difference of permeability was related to the microscopic structure, i.e. pores and cracks.",

keywords = "Fabrication method, Helium, Permeability, SiC/SiC composite",

author = "Y. Hirohata and T. Jinushi and Y. Yamauchi and M. Hashiba and T. Hino and Y. Katoh and A. Kohyama",

year = "2002",

month = nov,

doi = "10.1016/S0920-3796(02)00153-9",

language = "English",

volume = "61-62",

pages = "699--704",

journal = "Fusion Engineering and Design",

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T1 - Gas permeability of SiC/SiC composites as fusion reactor material

AU - Hirohata, Y.

AU - Jinushi, T.

AU - Yamauchi, Y.

AU - Hashiba, M.

AU - Hino, T.

AU - Katoh, Y.

AU - Kohyama, A.

PY - 2002/11

Y1 - 2002/11

N2 - Permeability of helium gas in SiC/SiC composites material, which is one of the most important properties in application of SiC/SiC composite for first wall and blanket of fusion reactors, was studied by using a vacuum apparatus. Three tubular and two flat plate SiC/SiC composites were prepared by different preparation processes. The measurement of permeability coefficient of helium gas was carried out with pressure ranging from 102 to 105 Pa at room temperature. The permeability coefficient of the SiC/SiC composite largely depended on the preparation method. In three tubular materials, the SiC/SiC composite made by both polymer impregnation and pyrolysis (PIP) and melt infiltration (MI) methods showed the lowest permeability, 9.1 × 10-7 m2/s, which was approximately two orders of magnitude smaller than one of the material made only by PIP method. The permeability of the flat plate SiC/SiC composites made by both liquid phase sintering (LPS) and hot pressing (HP) was approximately 1.5 × 10-9 -4.0 × 10-11 m2/s. The difference of permeability was related to the microscopic structure, i.e. pores and cracks.

AB - Permeability of helium gas in SiC/SiC composites material, which is one of the most important properties in application of SiC/SiC composite for first wall and blanket of fusion reactors, was studied by using a vacuum apparatus. Three tubular and two flat plate SiC/SiC composites were prepared by different preparation processes. The measurement of permeability coefficient of helium gas was carried out with pressure ranging from 102 to 105 Pa at room temperature. The permeability coefficient of the SiC/SiC composite largely depended on the preparation method. In three tubular materials, the SiC/SiC composite made by both polymer impregnation and pyrolysis (PIP) and melt infiltration (MI) methods showed the lowest permeability, 9.1 × 10-7 m2/s, which was approximately two orders of magnitude smaller than one of the material made only by PIP method. The permeability of the flat plate SiC/SiC composites made by both liquid phase sintering (LPS) and hot pressing (HP) was approximately 1.5 × 10-9 -4.0 × 10-11 m2/s. The difference of permeability was related to the microscopic structure, i.e. pores and cracks.

KW - Fabrication method

KW - Helium

KW - Permeability

KW - SiC/SiC composite

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DO - 10.1016/S0920-3796(02)00153-9

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SN - 0920-3796

VL - 61-62

SP - 699

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JO - Fusion Engineering and Design

JF - Fusion Engineering and Design

ER -

Gas permeability of SiC/SiC composites as fusion reactor material

Abstract

Funding

Keywords

UN SDGs

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