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

O. Lavigne, Yoichi Takeda, Tetsuo Shoji

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

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.

Original languageEnglish
Title of host publication15th International Conference on Environmental Degradation of Materials in Nuclear Power Systems-Water Reactors 2011
Pages1976-1985
Number of pages10
Publication statusPublished - 2011 Dec 1
Event15th International Conference on Environmental Degradation of Materials in Nuclear Power Systems-Water Reactors 2011 - Colorado Springs, CO, United States
Duration: 2011 Aug 72011 Aug 11

Publication series

Name15th International Conference on Environmental Degradation of Materials in Nuclear Power Systems-Water Reactors 2011
Volume3

Other

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

Keywords

  • Corrosion
  • EIS
  • Passivity
  • Stainless steel
  • Water sonolysis
  • XPS

ASJC Scopus subject areas

  • Nuclear Energy and Engineering
  • Pollution

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