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Omori, Atsushi*; Akiyama, Eiji*; Abe, Hiroshi*; Hata, Kuniki; Sato, Tomonori; Kaji, Yoshiyuki; Inoue, Hiroyuki*; Taguchi, Mitsumasa*; Seito, Hajime*; Tada, Eiji*; et al.
Zairyo To Kankyo, 69(4), p.107 - 111, 2020/04
To evaluate the effect of oxidants, which are formed by radiolysis of water under gamma ray irradiation, on the corrosion of a carbon steel in humid environment, ozone was introduced as a model oxidant in to humidity-controlled air at 50C in a thermo-hygrostat chamber. Corrosion monitoring was performed by using an Atmospheric Corrosion Monitor-type (ACM) sensor consisting of a carbon steel anode and an Ag cathode. The output current of the ACM sensor was increased with the increase in relative humidity and it was obviously increased with the increase in the introduced ozone concentration at each relative humidity. The results indicate that ozone accelerates the corrosion of the carbon steel. The effect of ozone on the corrosion acceleration is attributed to the fast reduction reaction and fast dissolution reaction in to water compared to that of oxygen.
Endo, Hideo; Seki, Masayuki; ; *; *
JNC TN8410 2000-007, 89 Pages, 2000/03
(1)Outline of examination. Various test specimens were made to evaluate and confirm the weld strength properties of the oxide dispersion strengthened (ODS) cladding tube material (martensitic and ferritic steel), which had been manufactured in JFY 1997. The examination consisted of tensile tests (RT,650C, 700C, 800C), internal pressure creep tests, internal pressure burst tests, and a rapid heating burst tests. (2)Examination results. The results of the tensile tests are as follows: (ferritic and martensitic) (a)All test specimens from RT to 700C failed in the tube. The weld zones had not failed. (b)The test specimens at 800C failed in the weld zones. There was little elongation. (ferritic) (a)The weld zone had fine grain structure and carbide precipitates. (martensitic) (a)Carbide had precipitated in the weld zone. From these results, the strength of weld zone decreased extremely at temperatures exceeding the endurance limit (700C) All of the internal pressure burst test specimens and the rapid heating burst test specimens failed in the tube and not the weld zone. (3)The quality assurance method of the test specimens. The weld reliability of the test specimens were confirmed by the process control of the welding conditions, by using control test specimens, and ultrasonic testing. Confirmation of the process control of the welding conditions; current wave, the voltage waveform, the accelerogram, and the displacement ripple in the welding process was recorded to assure an abnormal value had not occurred. (Process control of welding condition) The results the current waveform, voltage waveform, accelerogram, and the displacement waveform were excellent. (test specimens) The weld joint was excellent based on metallography examination. (Ultrasonic testing) The length of the weld joint was measured and found to be adequate. The reliability the weld joint can be assured by using the above-mentioned method.
Arai, Hidehiko
Hoshasen To Sangyo, (82), p.22 - 25, 1999/06
no abstracts in English
Firumu Bajji Nyusu, 0(232), p.6 - 10, 1996/04
no abstracts in English
Makuuchi, Keizo; Yoshii, Fumio; *; *; F.Akhtar*
Nihon Gomu Kyokai-Shi, 69(7), p.500 - 506, 1996/00
no abstracts in English
Ito, Hitoshi
SUT Bulletin, 0(11), p.25 - 29, 1996/00
no abstracts in English
Arai, Hidehiko; Namba, Hideki; Miyata, Teijiro; Arai, Michimasa; *; Sunaga, Hiromi
JAERI-Conf 95-003, 0, p.184 - 188, 1995/03
no abstracts in English
Hosono, Masakazu; Arai, Hidehiko; Aizawa, Masaki*; Shimooka, Toshio*; Shimizu, Ken*; Sugiyama, Masahi*
Mizu Shori Gijutsu, 36(5), p.11 - 17, 1995/00
no abstracts in English
M.J.Lee*; Arai, Hidehiko; Miyata, Teijiro
Chemistry Letters, 0(6), p.1069 - 1070, 1994/00
no abstracts in English
Ito, Hitoshi
Hoshasen To Sangyo, 0(57), p.16 - 19, 1993/00
no abstracts in English
Ito, Hitoshi
Shokuhin To Kaihatsu, 27(6), p.9 - 14, 1992/00
no abstracts in English
Ito, Hitoshi
Nihon Shokuhin Kogyo Gakkai-Shi, 38(1), p.72 - 77, 1991/01
no abstracts in English
Namba, Hideki; Suzuki, Nobutake; Tokunaga, Okihiro
JAERI-M 89-177, 18 Pages, 1989/11
no abstracts in English
; ; ;
Suido Kyokai Zasshi, 53(4), p.35 - 42, 1984/00
no abstracts in English
; ; ; ;
JAERI-M 9345, 34 Pages, 1981/03
no abstracts in English
;
Mizu Shori Gijutsu, 22(2), p.145 - 152, 1981/00
no abstracts in English
Radiation Physics and Chemistry, 18(1-2), p.383 - 388, 1981/00
no abstracts in English
; ;
Mizu Shori Gijutsu, 21(2), p.129 - 137, 1980/00
no abstracts in English