Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1570015 | Journal of Nuclear Materials | 2006 | 8 Pages |
Abstract
This paper presents a study of the effects of proton irradiation on iron corrosion. Since it is known that in humid atmospheres, iron corrosion is enhanced by the double influence of air and humidity, we studied the iron corrosion under irradiation with a 45% relative humidity. Three proton beam intensities (5, 10 and 20Â nA) were used. To characterise the corrosion layer, we used ion beam methods (Rutherford backscattering spectrometry (RBS), elastic recoil detection analysis (ERDA)) and X-ray diffraction (XRD) analysis. The corrosion kinetics are plotted for each proton flux. A diffusion model of the oxidant species is proposed, taking into account the fact that the flux through the surface is dependent on the kinetic factor K. This model provides evidence for the dependence of the diffusion coefficient, D, and the kinetic factor, K, on the proton beam intensity. Comparison of the values for D with the diffusion coefficients for thermal oxygen diffusion in iron at 300Â K suggests an enhancement due to irradiation of 6 orders of magnitude.
Related Topics
Physical Sciences and Engineering
Energy
Nuclear Energy and Engineering
Authors
S. Lapuerta, N. Moncoffre, N. Millard-Pinard, H. Jaffrézic, N. Bérerd, D. Crusset,