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Soma, Yasutaka; Ueno, Fumiyoshi
Zairyo To Kankyo, 67(5), p.222 - 228, 2018/05
Localized corrosion in crevice of SUS316 stainless steel after immersion in 288
C high purity water with dissolved oxygen concentration of 32 ppm for 100 h was analyzed. Two different types of localized corrosion initiated on grain boundary and inclusions. The former initiated on grain boundary and oxide grown into grain matrix. The oxidized area showed duplex structure composed of microcrystalline FeCr
O
and island-shaped residual metals. The latter initiated on inclusions containing Ca and S and microcrystalline FeCrO grown into metal matrix. These localized corrosion occurred selectively in oxygen depleted area indicated formation of macroscopic corrosion cell with the corroded area as anode and surrounding oxygenated area as cathode.
Iwamoto, Naoya*; Azarov, A.*; Oshima, Takeshi; Moe, A. M. M.*; Svensson, B. G.*
Journal of Applied Physics, 118(4), p.045705_1 - 045705_8, 2015/07
Times Cited Count：6 Percentile：27.03(Physics, Applied)Hishinuma, Akimichi; Takaki, Seiichi*; Abiko, Kenji*
Physica Status Solidi (A), 189(1), p.69 - 78, 2002/01
Times Cited Count：13 Percentile：55.67(Materials Science, Multidisciplinary)no abstracts in English
ion irradiationWakai, Eiichi; Hishinuma, Akimichi; Abe, Hiroaki; Takaki, Seiichi*; Abiko, Kenji*
Materials Transactions, JIM, 41(9), p.1176 - 1179, 2000/09
no abstracts in English
; *; ; ; Aoto, Kazumi;
JNC TN9400 2000-059, 43 Pages, 2000/05
JNC-TN9400-2000-059.pdf:2.08MB
The purpose of this study is to understand the material properties of manufacturable high-purity iron and high-purity iron-based alloy in present technology and to get an applicable prospect for the structural and functional material of the frontier fast reactor. Then the about 10kg high-purity iron and iron-based alloy were melted using a cold-crucible induction melting furnace under the ultra-high vacuum. Subsequent to that, the compatibility between the melted material and the high-temperature sodium environment which is a special feature of the fast reactor and tensile property at room and elevated temperatures were investigated using the melted materials. Also, the creep test using the high-purity 50%Cr-Fe alloy at 550C in air in order to understand the high temperature creep property. ln addition, the material properties such as thermal expansion coefficient, specific heat and electrical resistance were measured and to evaluate the outlook for the structural material for the fast reactor. The following results were obtained based on the property test and evaluation. (1)lt was possible to melt the about 10kg high-purity ingot and high-purity 50%Cr-Fe alloy ingot using a cold-crucible induction melting furnace under the ultra-high vacuum. (2)The tensile tests of the high-purity 50%Cr-Fe alloy were performed at room and elevated temperatures in order to understand the deformation behavior. From the experimental results, it was clear that the high-purity 50%Cr-Fe alloy possesses high strength and good ductility at elevated temperatures. (3)The physical properties (the thermal expansion coefficient and specific heat etc.) were measured using the high-purity 50%Cr-Fe alloy. lt was clear that the thermal expansion coefficient of high-purity 50%Cr-Fe alloy was smaller than that of SUS304. (4)From the corrosion test in liquid sodium, the ordinary-purity iron showed the weight loss after corrosion test. However the high-purity iron showed ...
; ; Saikawa, Takuya*; Sukegawa, Kazuya*
JNC TN9410 2000-008, 66 Pages, 2000/03
JNC-TN9410-2000-008.pdf:1.39MB
The experimental fast reactor "JOYO" served as the MK-II irradiation bed core for testing fuel and material for FBR development for 15 years from 1982 to 1997. During the MK-II operation, impurities concentrations in the sodium and the argon gas were determined by 67 samples of primary sodium, 81 samples of secondary sodium, 75 samples of primary argon gas, 89 samples of secondary argon gas (the overflow tank) and 89 samples of secondary argon gas (the dump tank). The sodium and the argon gas purity control data were accumulated from in thirty-one duty operations, thirteen special test operations and eight annual inspections. These purity control results and related plant data were compiled into database, which were recorded on CD-ROM for user convenience. Purity control data include concentration of oxygen, carbon, hydrogen, nitrogen, chlorine, iron, nickel and chromium in sodium, concentration of oxygen, hydrogen, nitrogen, carbon monoxide, carbon dioxide, methane and helium in argon gas with the reactor condition.
Wakai, Eiichi; Hishinuma, Akimichi; Miwa, Yukio; Ouchi, Asao*; Isozaki, Seiichi*; Takaki, Seiichi*; Abiko, Kenji*
Materials Transactions, JIM, 41(1), p.136 - 140, 2000/01
no abstracts in English
Miwa, Yukio; Tsukada, Takashi; Tsuji, Hirokazu; Nakajima, Hajime
Journal of Nuclear Materials, 271-272, p.316 - 320, 1999/00
Times Cited Count：5 Percentile：40.64(Materials Science, Multidisciplinary)no abstracts in English
Kato, Mineo; Kurosawa, Kiyoyuki; Sugai, Hiroyuki; Tanase, Masakazu; Matsuzaki, Teiichiro*; Ishida, Katsuhiko*; Nagamine, Kanetada*
KEK Proceedings 99-11, p.113 - 127, 1999/00
no abstracts in English
*; Hasegawa, Kazuo; Honda, Yoichiro*; Kusano, Joichi; Mizumoto, Motoharu; Mukugi, Ken*; Ouchi, Nobuo; Inoue, Hitoshi*; Noguchi, Shuichi*; Saito, Kenji*
Proceedings of 6th European Particle Accelerator Conference (EPAC98) (CD-ROM), p.734 - 736, 1998/01
no abstracts in English
ion irradiationWakai, Eiichi; Hishinuma, Akimichi; Abe, Hiroaki; Miwa, Yukio; Takaki, Seiichi*; Abiko, Kenji*
Proc of Ultra-High-Purity Metallic-Base Materials (UHPM-98), p.35 - 45, 1998/00
no abstracts in English
Hishinuma, Akimichi; Wakai, Eiichi; Takaki, Seiichi*; Abiko, Kenji*
Proc. of Int. Conf. on Ultra-high purity base metals (UHPM-98), p.27 - 33, 1998/00
no abstracts in English
Wakai, Eiichi; Hishinuma, Akimichi; Sawai, Tomotsugu; Kato, Yasushi*; Isozaki, Seiichi*; Takaki, Seiichi*; Abiko, Kenji*
Physica Status Solidi (A), 160(2), p.441 - 448, 1997/00
Times Cited Count：15 Percentile：66.71(Materials Science, Multidisciplinary)no abstracts in English
Kusano, Joichi; Ouchi, Nobuo; Akaoka, Nobuo*; *; Noguchi, Shuichi*; Mukugi, Ken*; Hasegawa, Kazuo; Mizumoto, Motoharu
Proc. of 11th Symp. on Accelerator Sci. and Technol., p.240 - 242, 1997/00
no abstracts in English
Hishinuma, Akimichi
Materia, 34(3), p.328 - 331, 1995/00
no abstracts in English
Wakai, Eiichi; Hishinuma, Akimichi; Kato, Yasushi*; *; *
Nihon Kinzoku Gakkai Koen Gaiyo, 1994 Shuki (Dai-115-Kai) Taikai, 0, p.488 - 494, 1994/00
no abstracts in English
; Watanabe, Kazuo
Bunseki Kagaku, 42, p.T65 - T69, 1993/00
no abstracts in English
Genka, Tsuguo;
Hoshasen Kagaku, 36(12), p.421 - 425, 1993/00
no abstracts in English
