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Ueno, Fumiyoshi; Uchiyama, Yohei*; Kato, Chiaki; Yamamoto, Masahiro; Ebina, Tetsunari*; Shimogawara, Shigeru*; Kano, Yoichi*
Nihon Genshiryoku Gakkai Wabun Rombunshi, 9(3), p.279 - 287, 2010/09
An application of cathodic protection method with impressed current system to control corrosion of austenitic stainless steel in boiling nitric acid solution was studied to improve corrosion resistance of components in fuel reprocessing plant. Plate and tube type specimens made of ultra low carbon type 304 stainless steel (SUS304ULC) were immersed in boiling nitric acid solutions using electrochemical test cells, electrochemical potentiostatic tests and cathodic protection tests were performed. Corrosion rates in the solution with and without protection were measured. As the results, corrosion rates of plate type specimens with cathodic protection were decreased from 1/40 to 1/10 against without protection. In the case of tube type specimen, loss of outer surface thickness was decreased about 1/8, and no deviation of the loss was observed. Authors were concluded that cathodic protection method was expectative as one of the maintenance methods of components in fuel reprocessing plant.
Ueno, Fumiyoshi; Yamamoto, Masahiro; Kato, Chiaki; Tarui, Hirofumi; Ebina, Tetsunari*; Shimogawara, Shigeru*; Kano, Yoichi*
no journal, ,
An application of cathodic protection method with impressed current system to control corrosion of austenitic stainless steel in boiling nitric acid solution was studied to improve corrosion resistance of components in fuel reprocessing plant. Tube type specimens made of ultra low carbon type 304 stainless steel (SUS304ULC) were immersed in boiling nitric acid solutions using electrochemical test cells, electrochemical potentiostatic tests and cathodic protection tests were performed. Corrosion rates in the solution with and without protection were measured. As the results, loss of outer surface thickness of the tubes was decreased about 1/8, and no deviation of the loss was observed. Authors were concluded that cathodic protection method was expectative as one of the maintenance methods of components in fuel reprocessing plant.
Yamamoto, Masahiro; Ueno, Fumiyoshi; Kato, Chiaki; Tarui, Hirofumi; Ebina, Tetsunari*; Shimogawara, Shigeru*; Kano, Yoichi*
no journal, ,
In order to decrease corrosion rate of stainless steel in boiling nitric acid solution, cathodic protection method was attempted to utilize to reprocessing process. However, the effect of cathodic protection was confirmed in laboratory, there exist some evaluations of setups of electrodes and cathodic current densities. In this report, the calculation results of potentials and current density of cathodic protection conditions using low price scripted FEM software are introduced.
