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Journal Articles

Proton exchange membranes for fuel cell applications prepared by ion track technology

Yamaki, Tetsuya; Kozone, Yuichi*; Hiroki, Akihiro; Hosoi, Katsuhiko*; Asano, Masaharu; Kubota, Hitoshi*; Yoshida, Masaru

Denki Kagaku Oyobi Kogyo Butsuri Kagaku, 75(2), p.175 - 178, 2007/02

 Times Cited Count:9 Percentile:22.15(Electrochemistry)

Proton exchange membranes for use in fuel cells were prepared our original ion-track technology, which involves (1) the swift heavy ion irradiation of polyvinylidene fluoride films and subsequent chemical etching to obtain cylindrical pores, and (2) the filling of proton-conducting polymer chains into the etched pores by $$gamma$$-ray-induced graft polymerization. We found that the membranes possessed one-dimensional straight proton conducting pathways parallel to the ion-beam incident axis. Such restricted structures probably led to less water uptake and lower methanol permeability compared to a commercially-available Nafion membrane.

JAEA Reports

Development of the fabrication technology for the superconducting coils in the ITER magnet system and its achievements

Hamada, Kazuya; Nakajima, Hideo; Okuno, Kiyoshi; Endo, Sakaru*; Kikuchi, Kenichi*; Kubo, Yoshio*; Aoki, Nobuo*; Yamada, Yuichi*; Osaki, Osamu*; Sasaki, Takashi*; et al.

JAERI-Tech 2002-027, 23 Pages, 2002/03

JAERI-Tech-2002-027.pdf:2.94MB

The Engineering Design Activities (EDA) for the International Thermonuclear Experimental Reactor (ITER) was performed under the collaboration of Japan, EU, Russia and the US. The EDA was successfully completed in July 2001, in which the development of fabrication technology for advanced components, such as superconducting coils, was conducted. The ITER magnet system consists of Toroidal Field coils, a Central Solenoid (CS), Poloidal Field coils and Correction coils. The construction of these coils requires advanced technologies that fairly exceeded those available at the start of the EDA. Therefore, CS Model Coil and TF Model Coil projects were implemented. To fabricate the CS Model Coil, the fabrication technologies for high performance strand, large cable, winding, heat treatment, joint and insulation are indispensable. This report describes the above detailed fabrication technologies successfully developed in the CS Model Coil Project.

Journal Articles

Evaluation of critical current performance of a Nb$$_{3}$$Al conductor with stainless steel conduit

Koizumi, Norikiyo; Takahashi, Yoshikazu; Nakajima, Hideo; Tsuchiya, Yoshinori; Matsui, Kunihiro; Nunoya, Yoshihiko; Ando, Toshinari; Hiyama, Tadao; Kato, Takashi; Isono, Takaaki; et al.

Teion Kogaku, 36(8), p.478 - 485, 2001/08

no abstracts in English

Journal Articles

Development and performance evaluation of 13T-46kA Nb$$_{3}$$Al conductor

Koizumi, Norikiyo; Ando, Toshinari; Takahashi, Yoshikazu; Matsui, Kunihiro; Nakajima, Hideo; Tsuchiya, Yoshinori; Kikuchi, Kenji; Nunoya, Yoshihiko; Kato, Takashi; Isono, Takaaki; et al.

Senshin A15-gata Kagobutsu Chodendo Senzai Shimpojiumu Rombunshu, p.5 - 9, 2000/00

no abstracts in English

Journal Articles

Stress analysis for the crack observation in cooling channels of the toroidal field coils in JT-60U

Tamai, Hiroshi; Kikuchi, Mitsuru; Arai, Takashi; ; *; Saido, Masahiro; Kimura, Toyoaki; Nagami, Masayuki; Shimizu, Masatsugu; *; et al.

Fusion Engineering and Design, 38(4), p.429 - 439, 1998/00

 Times Cited Count:3 Percentile:32.94(Nuclear Science & Technology)

no abstracts in English

JAEA Reports

Cool-down simulation of Nb$$_{3}$$Al insert after dumping for coil protection

*; Koizumi, Norikiyo; Ando, Toshinari; Tsuji, Hiroshi; Kuchiishi, Yoshikazu*; Asano, Katsuhiko*

JAERI-Research 97-044, 10 Pages, 1997/07

JAERI-Research-97-044.pdf:0.58MB

no abstracts in English

Journal Articles

Quench analysis of 46kA-13T Nb$$_{3}$$Al insert coil

Takeuchi, Kazuhiro*; *; *; Asano, Katsuhiko*; Koizumi, Norikiyo; Ando, Toshinari; *; Tsuji, Hiroshi; Okuno, Kiyoshi

Proc. of 15th Int. Conf. on Magnet Technology (MT-15), p.417 - 420, 1997/00

no abstracts in English

Journal Articles

Design of the Nb$$_{3}$$Al insert to be tested in ITER central solenoid model coil

Koizumi, Norikiyo; *; *; Takahashi, Yoshikazu; Sugimoto, Makoto; Nakajima, Hideo; Kato, Takashi; Nunoya, Yoshihiko; Ando, Toshinari; Tsuji, Hiroshi; et al.

IEEE Transactions on Magnetics, 32(4), p.2236 - 2239, 1996/07

 Times Cited Count:11 Percentile:64.62(Engineering, Electrical & Electronic)

no abstracts in English

Journal Articles

Cool-down and charging tests of a double-conduit type forced-flow superconducting coil

Takahashi, Yoshikazu; Yoshida, Kiyoshi; Tsuji, Hiroshi; *; *; *; *; *; Takahashi, Ryukichi*; Asano, Katsuhiko*; et al.

Proc. of 16th Int. Cryogenic Engineering Conf. /Int. Cryogenic Materials Conf., 0, p.811 - 814, 1996/00

no abstracts in English

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