Estimation of corrosion mechanisms from the data obtained by the reproduced experiments considering the actual environments; Maritime structures and nuclear facilities

Yamamoto, Masahiro

Zairyo To Kankyo, 66(1), p.3 - 12, 2017/01

https://doi.org/10.3323/jcorr.66.3

The laboratory simulation tests which could be reproduced the corrosion reactions propagating in the actual environments were utilized to analyze the mechanism of corrosion phenomena. In this report, some results are introduced in the cases of maritime structures and nuclear facilities. Experimental apparatus was originally designed to obtain the data in high radioactive condition simulating actual plants. One is a result showing the effect of Np ion to the corrosion of stainless steel in nuclear fuel reprocessing plant. Corrosion mechanism was revealed that Np ion is reduced to Np ion by a corrosion reaction of stainless steel and then re-oxidized to Np ion in the bulk solution. And repetition of this cycle accelerated corrosion of stainless steel by a little amounts of Np addition in nitric acid solution. Another result is introduced that an effect of HO created by radiolysis of cooling water at high radioactive environment in light water reactor.

Status of JAERI material performance database (JMPD) and its use for analyses of aqueous environmentally assisted cracking data

Kaji, Yoshiyuki; Tsukada, Takashi; Miwa, Yukio; Tsuji, Hirokazu; Nakajima, Hajime

Environmentally Assisted Crarking (ASTM STP 1401), p.191 - 209, 2000/00

no abstracts in English

Retrieval results on various properties of superalloy using ``data-free-way'' (Joint research)

Kaji, Yoshiyuki; Tsuji, Hirokazu; Sakino, Takao*; Fujita, Mitsutane*; Kinugawa, Junichi*; Tachi, Yoshiaki*; Saito, Junichi*; Kano, Shigeki*; Shimura, Kazuki*; Nakajima, Ritsuko*; et al.

JAERI-Tech 99-007, 32 Pages, 1999/02

JAERI-Tech-99-007.pdf:1.53MB

no abstracts in English

Present status of data-free-way (distributed database system for advanced nuclear materials)

Tsuji, Hirokazu; ; Fujita, Mitsutane*; Kurihara, Yutaka*; Kano, Shigeki*; Tachi, Yoshiaki*; Shimura, Kazuki*; Nakajima, Ritsuko*; Iwata, Shuichi*

Journal of Nuclear Materials, 271-272, p.486 - 490, 1999/00

https://doi.org/10.1016/S0022-3115(98)00805-8

no abstracts in English

A Distributed material database on the internet; Recent activity in Data-Free-Way

Nakajima, Ritsuko*; Shimura, Kazuki*; Fujita, Mitsutane*; Tsuji, Hirokazu; ; Tachi, Yoshiaki*; Kano, Shigeki*; Iwata, Shuichi*

Joho Chishiki Gakkai Dai-6-Kai Kenkyu Hokokukai Koen Rombunshu, p.43 - 46, 1998/00

no abstracts in English

Distributed material database on the internet; Present status of data-free-way

Fujita, Mitsutane*; ; Tachi, Yoshiaki*; Nakajima, Ritsuko*

RIST News, (24), p.25 - 34, 1997/00

no abstracts in English

Development of a distributed database for advanced nuclear materials: Data-Free-Way System

Fujita, Mitsutane*; *; Nakajima, Hajime; *; Ueno, Fumiyoshi*; *; Iwata, Shuichi*

Proc. of the 4th Int. Symp. on Advanced Nuclear Energy Research (JAERI-CONF 1/JAERI-M 92-207), p.402 - 409, 1992/12

https://jopss.jaea.go.jp/pdfdata/JAERI-M-92-207.pdf

no abstracts in English

Atomistic study of interaction between a dislocation and a defect cluster in BCC-Fe

Hayakawa, Sho; Okita, Taira*; Itakura, Mitsuhiro; Haixuan, X.*; Osetsky, Y.*

no journal, , 

In this research we have constructed an atomistic model of three-dimensional motion of an interstitial cluster via a conservative climb toward a dislocation, which is a key process for void swelling, one of the serious material degradation for nuclear power plant. We also conducted a comparison of results obtained by the model with that by the molecular dynamics. Details of the prediction model and the comparison results will be given in the presentation. This study leads to provide new atomistic insight about the three-dimensional motion of an interstitial cluster, which had been unclear for a long time, and would certainly contribute to the prediction model of mechanical property degradation of nuclear materials.