Effect of the oxidizing ion on breakdown potential behavior of zirconium in boiling nitric acid solution

Ishijima, Yasuhiro ; Ueno, Fumiyoshi

Zr has susceptibility of stress corrosion cracking (SCC) in boiling nitric acid solution under trans-passive conditions. However, it is not clear that the influence of the nitrate concentration and pH on de-passivation behavior for zirconium. In this study, the anodic polarization measurements that controlled pH and nitrate concentrations were carried out. We found that the nitric acid concentration dependency on trans-passive behavior of Zr was specific phenomenon in nitric acid.

Language	:	Japanese
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Meeting title	:	腐食防食協会第63回材料と環境討論会
Held date	:	2016/10
Location (city)	:	大阪
Location (country)	:	日本
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Keywords	:	ジルコニウム; 応力腐食割れ; 燃料サイクル; 硝酸
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Registration No. : BB20161202
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