质子辐照和相对空气的湿度对铁腐蚀的影响
Role of proton irradiation and relative air humidity on iron corrosion
摘要：
本文研究了质子辐照对铁腐蚀的影响。由于已知在潮湿的大气中，铁的腐蚀受空气和湿度的双重影响而增强，所以我们研究了在相对湿度为45%的辐照下铁的腐蚀。使用三种质子束强度（5、10和20 nA）。为了消除腐蚀层，我们使用离子束方法（卢瑟福背散射光谱法（RBS），弹性反冲检测分析（ERDA））和X射线衍射（XRD）分析。绘制了每个质子通量的腐蚀动力学。考虑到通过表面的通量取决于动力学因子K，提出了氧化剂物种的扩散模型。该模型提供了证据的扩散系数，D，和动力学因子，K，对质子束强度的依赖性。在300 K的铁中的热氧扩散的扩散系数的D值的比较表明，由于6个数量级的辐射增强。
英文摘要：
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 20 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 300 K suggests an enhancement due to irradiation of 6 orders of magnitude.
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