Effects of temperature on SCC propagation in high temperature water injected with hydrogen peroxide

Nakano, Junichi; Sato, Tomonori ; Kato, Chiaki ; Kaji, Yoshiyuki ; Yamamoto, Masahiro ; Tsukada, Takashi

It has been reported that the corrosion behavior of stainless steels in high temperature water with hydrogen peroxide (H $_{2}$ O $_{2}$ ) was different from those with O $_{2}$ . To evaluate the effect of H $_{2}$ O $_{2}$ on stress corrosion cracking (SCC), SCC growth tests were conducted in high temperature water injected with H $_{2}$ O $_{2}$ . In 100 ppb H $_{2}$ O $_{2}$ at 561 K, an intergranular SCC (IGSCC) was observed only small portion of area near the side grooves of the CT specimen. In 100 ppb H $_{2}$ O $_{2}$ at 453 K, however, IGSCC extended to the central region of the CT specimen. Effects of H $_{2}$ O $_{2}$ on SCC growth behavior appeared stronger at lower temperature due to a reduction of the thermal decomposition of H $_{2}$ O $_{2}$ . Moreover, outer oxide layer of oxide film formed on the crack of the CT specimen was examined to estimate environmental situations in the cracks and a thermal equilibrium calculation was performed.

Language	:	English
Journal	:	Proceedings of 2012 Nuclear Plant Chemistry Conference (NPC 2012) (CD-ROM)
Volume	:
Number	:
Pages	:	9 Pages
Publication Year/Month	:	2012/09
Meeting title	:	2012 Nuclear Plant Chemistry Conference (NPC 2012)
Held date	:	2012/09
Location (city)	:	Paris
Location (country)	:	France
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Keywords	:	no keyword
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Registration No. : BB20121611
JAEA Abstracts No. :
Paper Submission No. : 13796

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