Influence of seawater-component on corrosion of steel in nitric acid solution containing vanadium and ruthenium

バナジウムおよびルテニウム含有硝酸溶液中のステンレス鋼腐食に及ぼす海水成分混入の影響

入澤 恵理子 ; 上野 文義  ; 内田 直樹; 田口 克也

Irisawa, Eriko; Ueno, Fumiyoshi; Uchida, Naoki; Taguchi, Katsuya

The corrosion rate of stainless steel in boiling-nitiric-acid solutions containing oxidizing metallic ions (vanadium and ruthenium) and seawataer components were investigated by the immersion tests in order to evaluate the influence of the seawater components on the corrosion of steel in the nitric acid solution containing oxidizing metallic ions. The corrosion rates of 310Nb in the solution containing seawater components were lower than that in the solution without seawater components. These results described that contamination of seawater components in the spent fuel reprocessing fluid seems not to accelerate the corrosion of steels, which are material for the devices treating the nitric-acid reprocessing solutions.