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Combined Kelvin probe force microscopy and secondary ion mass spectrometry for hydrogen detection in corroded 2024 aluminium alloy

Larignon, Céline and Alexis, Joël and Andrieu, Eric and Lacroix, Loïc and Odemer, Grégory and Blanc, Christine Combined Kelvin probe force microscopy and secondary ion mass spectrometry for hydrogen detection in corroded 2024 aluminium alloy. (2013) Electrochimica Acta. ISSN 0013-4686

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Official URL: http://dx.doi.org/10.1016/j.electacta.2013.02.063

Abstract

The capability of Kelvin probe force microscopy (KFM) to detect and locate hydrogen in corroded 2024 aluminium alloy was demonstrated. Hydrogen was introduced inside the 2024 alloy following a cyclic corrosion test consisting of cycles of immersion in 1 M NaCl solution followed by exposure to air at -20 °C. The combination of scanning electron microscopy, secondary ion mass spectrometry and KFM demonstrated that the grain and subgrain boundaries were preferential pathways for the short-circuit diffusion of hydrogen but also acted as a source of hydrogen diffusion in the lattice over distances of up to ten microns with non-negligible desorption when exposed to air at room temperature for 24 h.

Item Type:Article
Additional Information:Thanks to Elsevier editor. The definitive version is available at : http://dx.doi.org/10.1016/j.electacta.2013.02.063
HAL Id:hal-00840478
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
Laboratory name:
Funders:
Conseil Régional de la Région Midi-pyrénées - Ministère de l’industrie
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Deposited By: Loic LACROIX
Deposited On:28 May 2013 14:53

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