dorsal/arxiv
View SchemaUse ion beam techniques to study the coupling between air and its relative humidity on iron corrosion under irradiation
| Authors | S. Lapuerta, N. Moncoffre, N. Bérerd, H. Jaffrézic, N. Millard-Pinard, D. Crusset |
|---|---|
| Categories | |
| ArXiv ID | physics/0509120 |
| URL | https://arxiv.org/abs/physics/0509120 |
| DOI | 10.1016/j.nimb.2006.03.034 |
| Journal | Nuclear Instruments and Methods in Physics Research B 249 (2006) 470-473 |
Abstract
In this paper, the role of air humidity on the iron corrosion under irradiation is studied in the context of geological disposal of nuclear wastes. The irradiation experiments are performed at room temperature using a 3 MeV extracted proton beam with a 10 nA intensity. Different atmospheres are studied: Humid air with a relative humidity (RH) fixed at 45 %, dry air and a $^{15}N\_2$ atmosphere (45% RH). The hydrogen and oxygen distribution profiles at the iron surface in contact with atmosphere are measured by using respectively ERDA (Elastic Recoil Detection Analysis) and RBS (Rutherford Backscattering Spectrometry) analysis. From these experiments it is clearly demonstrated that the coupling of O$\_2$+H$\_2$O enhances iron oxidation whereas for iron hydrogenation, humidity is sufficient whatever the atmosphere. An interpretation is given, which is based on the reaction mechanisms and the species formed by air ionisation.
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"abstract": "In this paper, the role of air humidity on the iron corrosion under\nirradiation is studied in the context of geological disposal of nuclear wastes.\nThe irradiation experiments are performed at room temperature using a 3 MeV\nextracted proton beam with a 10 nA intensity. Different atmospheres are\nstudied: Humid air with a relative humidity (RH) fixed at 45 %, dry air and a\n$^{15}N\\_2$ atmosphere (45% RH). The hydrogen and oxygen distribution profiles\nat the iron surface in contact with atmosphere are measured by using\nrespectively ERDA (Elastic Recoil Detection Analysis) and RBS (Rutherford\nBackscattering Spectrometry) analysis. From these experiments it is clearly\ndemonstrated that the coupling of O$\\_2$+H$\\_2$O enhances iron oxidation\nwhereas for iron hydrogenation, humidity is sufficient whatever the atmosphere.\nAn interpretation is given, which is based on the reaction mechanisms and the\nspecies formed by air ionisation.",
"arxiv_id": "physics/0509120",
"authors": [
"S. Lapuerta",
"N. Moncoffre",
"N. B\u00e9rerd",
"H. Jaffr\u00e9zic",
"N. Millard-Pinard",
"D. Crusset"
],
"categories": [
"physics.chem-ph"
],
"doi": "10.1016/j.nimb.2006.03.034",
"journal_ref": "Nuclear Instruments and Methods in Physics Research B 249 (2006)\n 470-473",
"title": "Use ion beam techniques to study the coupling between air and its relative humidity on iron corrosion under irradiation",
"url": "https://arxiv.org/abs/physics/0509120"
},
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