Corrosion of stainless steel in high temperature water containing H $_{2}$ O $_{2}$

Sato, Tomonori ; Tsukada, Takashi ; Uchida, Shunsuke

In this study, in order to determine the effects of H $_{2}$ O $_{2}$ on corrosion of stainless steel, the analyses of the oxide film at the surface of specimens after exposure to the high temperature water containing H $_{2}$ O $_{2}$ . And the modified double oxide layer model was developed based on the obtained results. The major results are listed in follows; (1) The double oxide layer with a tight inner oxide layer which was formed by direct oxidation and a porous outer oxide layer which consisted of the oxide particles formed by the oxidation of dissolved ferrous ions released from inner oxide layer was confirmed. (2) The Fe $_{3}$ O $_{4}$ particles were formed by the oxidation of dissolved ferrous ions and precipitated. In higher H $_{2}$ O $_{2}$ concentration condition, the particles consisted of the mixture of Fe $_{3}$ O $_{4}$ and -Fe $_{2}$ O $_{3}$ particles due to the oxidation of Fe $_{3}$ O $_{4}$ to -Fe $_{2}$ O $_{3}$ . (3) Modified double oxide layer model was developed. Calculated results were qualitatively agreed with measured data.

Language	:	English
Journal	:	Proceedings of 15th International Conference on the Properties of Water and Steam (15th ICPWS) (Internet)
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Pages	:	10 Pages
Publication Year/Month	:	2008/09
Meeting title	:	15th International Conference on the Properties of Water and Steam (15th ICPWS)
Held date	:	2008/09
Location (city)	:	Berlin
Location (country)	:	Germany
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Registration No. : BB20082232
JAEA Abstracts No. :
Paper Submission No. : 7008

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Corrosion of stainless steel in high temperature water containing HO

Corrosion of stainless steel in high temperature water containing H $_{2}$ O $_{2}$