论文信息 - The influence of radiation on the corrosion of stainless steel

The influence of radiation on the corrosion of stainless steel

Abstract The effect of γ-radiation on the electrode potential and localized corrosion of type 304L steel in 300 ppm C1- solution has been studied. In open systems with argon or Ar-20% oxygen gas blankets irradiation at a dose rate of 2 × 10 3 Sv h −1 causes the steady rest potential of the metal to increase by 200–300 mV to ca +320 mV(SCE). This increase is partly due to cathodic depolarization by oxidizing radical and molecular radiolysis products, but may also involve adsorption of these species onto the metal surface. Radiolysis products also inhibit the initiation of pitting corrosion at low electrode potentials, but have no effect on the repassivation of established pits.

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