Simulation of water radiolysis by sonochemistry: Effects on the electrochemical behavior of a stainless steel

O. Lavigne, Yoichi Takeda, Tetsuo Shoji

研究成果: Conference contribution

1 被引用数 (Scopus)

抄録

In this study, water radiolysis occurring in nuclear power plants was simulated by sonochemistry. Generated hydroxyl radicals can recombine in others species such as H 2O 2 and H 2. It is shown that solution conductivity is an important parameter on the evolution of open circuit potential due to the thickness variation of the diffusion layer which may contain sonolysed species (OH•, H 2, H 2O 2) in different concentrations. Current densities increase under ultrasonic irradiation due to an increase of mass transport and charge transfer and to the presence of sonolysed species. The oxide film formed under ultrasonic for 1 h at a passive potential of +0.2 VSCE shows early stage of passivation and higher disordered state which imply a great decrease of the corrosion resistance behavior of the sample. The polarisation resistance R p, of the stainless steel is divided by a value of 4.5 under ultrasonic irradiation.

本文言語English
ホスト出版物のタイトル15th International Conference on Environmental Degradation of Materials in Nuclear Power Systems-Water Reactors 2011
ページ1976-1985
ページ数10
出版ステータスPublished - 2011 12月 1
イベント15th International Conference on Environmental Degradation of Materials in Nuclear Power Systems-Water Reactors 2011 - Colorado Springs, CO, United States
継続期間: 2011 8月 72011 8月 11

出版物シリーズ

名前15th International Conference on Environmental Degradation of Materials in Nuclear Power Systems-Water Reactors 2011
3

Other

Other15th International Conference on Environmental Degradation of Materials in Nuclear Power Systems-Water Reactors 2011
国/地域United States
CityColorado Springs, CO
Period11/8/711/8/11

ASJC Scopus subject areas

  • 原子力エネルギーおよび原子力工学
  • 汚染

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