Zairyo-to-Kankyo
Online ISSN : 1881-9664
Print ISSN : 0917-0480
-A Rapid Communication Note of the 61th Japan Conference on Materials Environments-
Effect of Chloride Concentration on Corrosion Behavior of Carbon Steel under Gamma-ray Irradiation
Takafumi MotookaFumiyoshi Ueno
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2015 Volume 64 Issue 6 Pages 220-223

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Abstract

Corrosion behavior of carbon steel in chloride aqueous solutions under a low dose rate was investigated by corrosion test using chloride aqueous solutions with different chloride concentration at a dose rate of 500 Gy/h. The corrosion rate of carbon steel increased by the irradiation, and the corrosion rate had the maximum value at a certain concentration. The oxidants produced by radiolysis of chloride aqueous solution enhanced the corrosion of carbon steel. The main oxidants were oxygen and hydrogen peroxide, and the diffusion process of oxidants controlled the corrosion of carbon steel under irradiation. There was a positive correlation between the dependence of corrosion rate and chloride concentration and the dependence of oxidant concentration and chloride concentration.

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© 2015 Japan Society of Corrosion Engineering
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