Inhibition of self-passivation of SUS304 stainless steel in tritiated water solution of sulfuric acid

Oyaizu, Makoto; Isobe, Kanetsugu; Hayashi, Takumi

The corrosion behavior of SUS304 stainless steel and tritium effects of tritiated water on it were studied by means of electrochemical techniques. As the results, the self-passivation of SUS304 stainless steel in 1N sulfuric acid solution by dissolved oxygen was inhibited in tritiated water solution. It was also indicated that the self-passivation inhibitory effect could be induced by elution of chromium by further oxidation of trivalent chromium, which is one of the main components of passive layer, by highly oxidative radiolysis products.

Language	:	English
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Meeting title	:	2014 Nuclear Plant Chemistry Conference (NPC 2014)
Held date	:	2014/10
Location (city)	:	Sapporo
Location (country)	:	Japan
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Keywords	:	Passivation inhibitory effect; Tritiated water; Corrosion
Research Facility	:	原型炉R\&D棟
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Registration No. : BB20141567
JAEA Abstracts No. :
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