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Ueta, Shohei; Aihara, Jun; Goto, Minoru; Tachibana, Yukio; Okamoto, Koji*
Mechanical Engineering Journal (Internet), 5(5), p.18-00084_1 - 18-00084_9, 2018/10
To develop the security and safety fuel (3S-TRISO fuel) for Pu-burner high temperature gas-cooled reactor (HTGR), R&D on zirconium carbide (ZrC) directly coated on yttria stabilized zirconia (YSZ) has been started in the Japanese fiscal year 2015. As results of the direct coating test of ZrC on the dummy YSZ particle, ZrC layers with 18 - 21 microns of thicknesses have been obtained with 0.1 kg of particle loading weight. No deterioration of YSZ exposed by source gases of ZrC bromide process was observed by Scanning Transmission Electron Microscope (STEM).
Ueta, Shohei; Aihara, Jun; Mizuta, Naoki; Goto, Minoru; Fukaya, Yuji; Tachibana, Yukio; Okamoto, Koji*
Proceedings of 9th International Topical Meeting on High Temperature Reactor Technology (HTR 2018) (USB Flash Drive), 7 Pages, 2018/10
The security and safety fuel (3S-TRISO fuel) employs the coated fuel particle with a fuel kernel made of plutonium dioxide (PuO
) and yttria stabilized zirconia (YSZ) as an inert matrix. Especially, a zirconium carbide (ZrC) coating is one of key technologies of the 3S-TRISO, which performs as an oxygen getter to reduce the fuel failure due to internal pressure during the irradiation. R&Ds on ZrC coating directly on the dummy CeO-YSZ kernel have been carried in the Japanese fiscal year 2017. As results of ZrC coating tests by the bromide chemical vapor deposition process, stoichiometric ZrC coatings with 3 - 18 microns of thicknesses were obtained with 0.1 kg of particle loading weight.
Ueta, Shohei; Aihara, Jun; Goto, Minoru; Tachibana, Yukio; Okamoto, Koji*
Proceedings of 25th International Conference on Nuclear Engineering (ICONE-25) (CD-ROM), 4 Pages, 2017/07
To develop the security and safety fuel (3S-TRISO fuel) for Pu-burner high temperature gas-cooled reactor (HTGR), R&D on zirconium carbide (ZrC) directly coated on yttria stabilized zirconia (YSZ) has been started in the Japanese fiscal year 2015. As results of the direct coating test of ZrC on the dummy YSZ particle, ZrC layers with 18 - 21 microns of thicknesses have been obtained with 0.1 kg of particle loading weight. No deterioration of YSZ exposed by source gases of ZrC bromide process was observed by Scanning Transmission Electron Microscope (STEM).
melt containing KTaF
; Electrochemical studyMehmood, M.*; Kawaguchi, Nobuaki*; Maekawa, Hideki*; Sato, Yuzuru*; Yamamura, Tsutomu*; Kawai, Masayoshi*; Kikuchi, Kenji
Materials Transactions, 44(2), p.259 - 267, 2003/02
Times Cited Count：9 Percentile：52.01(Materials Science, Multidisciplinary)Electrochemical study has been carried out on the electro-deposition of tantalum in LiF-NaF-CaF melt containing KTaF at 700
C. This has been done for determining the mechanistic features for preparing electrolytic coating of tantalum on nickel and tungsten substrates. Electro-deposition of metallic tantalum occurs primarily by electro-reduction of Ta(V). Pure metallic tantalum without any entrapped salt is successfully deposited on tungsten by galvanostatic polarization at reasonably low current densities. An additional feature on nickel is the formation of an intermetallic compound at potential 0.25V nobler than that of pure tantalum as a result of underpotential deposition of tantalum. This intermetallic compound covers the surface within a short time followed by deposition of pure tantalum, although intermetallic compound keeps growing at the interface of pure tantalum deposit and the substrate as a result of diffusion.
Sawa, Kazuhiro; Sumita, Junya; Ueta, Shohei; Takahashi, Masashi; Tobita, Tsutomu*; Hayashi, Kimio; Saito, Takashi; Suzuki, Shuichi*; Yoshimuta, Shigeharu*; Kato, Shigeru*
JAERI-Research 2002-012, 39 Pages, 2002/06
JAERI-Research-2002-012.pdf:3.12MB
no abstracts in English
Minato, Kazuo
Zusetsu Zoryu; Tsubu No Sekai Arekore, p.131 - 133, 2001/10
no abstracts in English
Minato, Kazuo; ; Tobita, Tsutomu*; Fukuda, Kosaku; Yoshimuta, Shigeharu*; *; *; *; *
JAERI-Research 98-070, 25 Pages, 1998/11
JAERI-Research-98-070.pdf:2.18MB
no abstracts in English
Yamashita, Kiyonobu; Sawa, Kazuhiro; Ando, Hiroei; *; *
Nihon Genshiryoku Gakkai-Shi, 40(1), p.65 - 69, 1998/00
Times Cited Count：6 Percentile：49.16(Nuclear Science & Technology)no abstracts in English
Minato, Kazuo; ; Tobita, Tsutomu*; Fukuda, Kosaku; *; *; *; *
Journal of Nuclear Science and Technology, 34(3), p.325 - 333, 1997/03
Times Cited Count：16 Percentile：75.78(Nuclear Science & Technology)no abstracts in English
Minato, Kazuo; Fukuda, Kosaku; Ishikawa, Akiyoshi; Mita, Naoaki
Journal of Nuclear Materials, 246(2-3), p.215 - 222, 1997/00
Times Cited Count：16 Percentile：75.78(Materials Science, Multidisciplinary)no abstracts in English
Minato, Kazuo; ; Fukuda, Kosaku; *; *; *; *
Nuclear Technology, 111, p.260 - 269, 1995/08
Times Cited Count：4 Percentile：43.23(Nuclear Science & Technology)no abstracts in English
; Hayashi, Kimio; Fukuda, Kosaku
JAERI-M 92-114, 20 Pages, 1992/08
no abstracts in English
M.Z.Hasan*; Kunugi, Tomoaki; Seki, Masahiro; Yokokawa, Mitsuo; Ise, Hideo*; ;
Fusion Technology, 19, p.908 - 912, 1991/05
no abstracts in English
*; *; *; *; Matsuzuru, Hideo
JAERI-M 89-200, 26 Pages, 1989/12
no abstracts in English
Minato, Kazuo; ; ;
JAERI-M 86-083, 27 Pages, 1986/06
no abstracts in English
JAERI-M 85-204, 7 Pages, 1985/12
no abstracts in English
JAERI-M 85-006, 224 Pages, 1985/03
no abstracts in English
; Murakami, Yoshio; ; Hiroki, S.; ; *; *; *
Journal of Nuclear Materials, 133-134, p.754 - 759, 1985/00
Times Cited Count：16 Percentile：85.27(Materials Science, Multidisciplinary)no abstracts in English
; Murakami, Yoshio; ; Hiroki, S.; ; *; *; *; *
Shinku, 27(5), p.394 - 397, 1984/00
no abstracts in English
; ; ; ;
JAERI-M 83-087, 16 Pages, 1983/06
no abstracts in English
