Water irradiation by high-frequency ultrasonic wave: Effects on properties of passive film formed on stainless steel

O. Lavigne, Y. Takeda, T. Shoji, K. Sakaguchi

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)

Abstract

In this paper an aqueous solution was irradiated with a 1.63 MHz ultrasonic wave. It is shown that if stainless steel can passivate under dynamic polarization in this medium, under static polarization, the latter does not show any repassivation behaviour with time. This is attributed to a diminution of the diffusion layer thickness that is developed at the electrode/electrolyte interface, which is associated with a production of H2 species by sonolysis and which maintains reductive conditions at the interface. The oxide film formed under ultrasonic irradiation for 1 h at a passive potential of +0.2 VSCE shows an early stage of passivation and an increased disordered state, which implies a considerable decrease in the corrosion resistance behaviour of the sample. The polarization resistance of the stainless steel Rp is divided by a value of 4.5 under ultrasonic conditions.

Original languageEnglish
Pages (from-to)1287-1294
Number of pages8
JournalUltrasonics Sonochemistry
Volume18
Issue number6
DOIs
Publication statusPublished - 2011 Nov

Keywords

  • Electrochemical impedance spectroscopy
  • Passive film
  • Sonoluminescence
  • Water sonolysis
  • XPS

ASJC Scopus subject areas

  • Chemical Engineering (miscellaneous)
  • Environmental Chemistry
  • Radiology Nuclear Medicine and imaging
  • Acoustics and Ultrasonics
  • Organic Chemistry
  • Inorganic Chemistry

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