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Journal Articles

Development of fabrication and inspection technologies for oxidation-resistant fuel element for high-temperature gas-cooled reactors

Aihara, Jun; Yasuda, Atsushi*; Ueta, Shohei; Ogawa, Hiroaki; Honda, Masaki*; Ohira, Koichi*; Tachibana, Yukio

Nippon Genshiryoku Gakkai Wabun Rombunshi, 18(4), p.237 - 245, 2019/12

Development of fabrication and inspection technologies of oxidation resistant fuel element for improvement of safety of high temperature gas-cooled reactors (HTGRs) in severe oxidation accident was carried out. Simulated coated fuel particles (CFPs), alumina particles, were over-coated with mixed powder of Si, C and small amount of resin to form over-coated particles, and over-coated particles were molded and hot-pressed to sinter simulated oxidation resistant fuel elements with SiC/C mixed matrix. Simulated oxidation resistant fuel elements with matrix whose Si/C mole ratio is 1.00 were fabricated. Failure fraction of CFPs in fuel elements is one of very important inspection subjects of HTGR fuel. It is essential that CFPs are extracted from fuel elements without additional failure. Development of method for extraction of CFPs was carried out. Desolation of SiC by KOH method or pressurized acidolysis method should be applied to extraction of CFPs.

Journal Articles

High temperature oxidation behavior of titanium beryllide in air

Sato, Yoshiyuki*; Uchida, Munenori*; Kawamura, Hiroshi

JAERI-Conf 2004-006, p.203 - 209, 2004/03

no abstracts in English

Journal Articles

Surface chemical states and oxidation resistivity of "ecologically friendly" semiconductor ($$beta$$-FeSi$$_{2}$$) thin films

Saito, Takeru; Yamamoto, Hiroyuki; Sasase, Masato*; Nakanoya, Takamitsu; Yamaguchi, Kenji; Haraguchi, Masaharu*; Hojo, Kiichi

Thin Solid Films, 415(1-2), p.138 - 142, 2002/08

 Times Cited Count:17 Percentile:34.28

no abstracts in English

JAEA Reports

Investigation of the properties of high temperature resistance alloys used in the helium gas cooled high temperature reactor

Uwaba, Tomoyuki

JNC-TN9420 2000-005, 28 Pages, 2000/03

JNC-TN9420-2000-005.pdf:0.94MB

In the first phase of the feasibility study, their basic objectives are presentating the feasible image and scenario of development of the FBR cycle system, which is composed of the fast reactor, spent fuel reprocessing and fuel manufacturing facility. In the development of the FBR system in this phase, various ideas of plants are to be studied, which include coolant types such as sodium, heavy metals, gases(CO$$_{2}$$, He), wator, and middle or small size of the reactor, and fuel types (MOX, metal and nitride). In this report, as a part of this study, materials used for the core of the helium gas cooled reactor and their integrity (corrosion, mechanical and irradiation property) under high temperature helium atmosphere were investigated from open literatures.

JAEA Reports

Thermal cyclic oxidation behavior of the developed compositionally gradient graphite material of SiC/C in air environment

Nakano, Junichi; Fujii, Kimio; Shindo, Masami

JAERI-M 93-159, 20 Pages, 1993/08

JAERI-M-93-159.pdf:0.67MB

no abstracts in English

Journal Articles

Improvement of oxidation resistance of carbon and graphite materials by compositionally gradient SiC/C layer

Shindo, Masami

Keisha Kino Zairyo, 0(19), p.14 - 17, 1992/12

no abstracts in English

Journal Articles

Reaction of graphite with gaseous silicon monoxide

Imai, Hisashi; Fujii, Kimio; Nomura, Shinzo

High Temperature Corrosion of Advanced Materials and Protective Coatings, p.351 - 354, 1992/00

no abstracts in English

Journal Articles

Reaction of graphite with gaseous silicon monoxide

Imai, Hisashi; Fujii, Kimio; Nomura, Shinzo

Proc. of the 1st Int. Symp. on Functionally Gradient Materials, p.273 - 275, 1990/00

no abstracts in English

JAEA Reports

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