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Crevice Corrosion Behavior of Type 316L Stainless Steel in Gamma-ray Irradiated High-temperature Water

Published online by Cambridge University Press:  01 March 2011

Yukio Nakahara ,
Chiaki Kato ,
Masahiro Yamamoto ,
Takashi Tsukada ,
Atsushi Watanabe  and
Motomasa Fuse
Yukio Nakahara
Affiliation:
Japan Atomic Energy Agency, Tokai-mura, Naka-gun, Ibaraki-ken 319-1195, Japan.
Chiaki Kato
Affiliation:
Japan Atomic Energy Agency, Tokai-mura, Naka-gun, Ibaraki-ken 319-1195, Japan.
Masahiro Yamamoto
Affiliation:
Japan Atomic Energy Agency, Tokai-mura, Naka-gun, Ibaraki-ken 319-1195, Japan.
Takashi Tsukada
Affiliation:
Japan Atomic Energy Agency, Tokai-mura, Naka-gun, Ibaraki-ken 319-1195, Japan.
Atsushi Watanabe
Affiliation:
Hitachi, Ltd., Hitachi-shi, Ibaraki-ken 319-1221, Japan.
Motomasa Fuse
Affiliation:
Hitachi-GE Nuclear Energy, Ltd., Hitachi-shi, Ibaraki-ken 317-0073, Japan.
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Abstract

Crevice-corrosion tests were performed in gamma-ray irradiated high-temperature water of 288 °C on Type 316L stainless steel. The gamma-ray dose rate was about 30 kGy h−1. Tested specimen surfaces were analyzed using SEM, laser Raman spectroscopy and TEM/EDX. Experimental data were presented in order to show the differences made by the irradiation and crevice-shape simulated structure. Both gamma-ray irradiation and crevice-shape simulated structure changed the corrosion phenomena. On the gamma-ray irradiated crevice-shape simulated surface, α-Fe2O3 particles more than 5 μm in diameter were observed. It suggested that corrosion environment on the crevice-shape simulated surface became severer by gamma-ray irradiation.

Keywords

corrosionsteelradiation effects
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1298: Symposium Q/R/T – Advanced Materials for Applications in Extreme Environments , 2011 , mrsf10-1298-q04-02
Copyright
Copyright © Materials Research Society 2011

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References

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