Combined Raman Microspectrometer and Shearforce Regulated SECM for Corrosion and Self-Healing Analysis

Abstract : Shearforce regulated scanning electrochemical microscopy (SECM) has been associated with Raman microspectrometry in order to perform combined electrochemical and spectrochemical analysis on reactive interfaces. The interest of the method was evaluated by analyzing local corrosion phenomena in damaged Zn(Mg, Al) self healing coatings,deposited on steel Despite the high aspect ratio of the analyzed sample displaying here more than a 50 pm depth profile, the optimized setup allowed (1) precise electrode positioning, with the help of shearforce detection, (2) electrochemical measurement at a constant clistance from the sample surface, and (3) local chemical analysis of the solid surface by confocal Raman microspectroscopy performed at a constant focal distance from the sample. All in all, this new setup allows one to approach the detailed reactivity involved in defective metal samples.
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Analytical Chemistry, American Chemical Society, 2014, 86 (22), pp.11203 - 11210. 〈http://pubs.acs.org/doi/abs/10.1021/ac502670t〉. 〈10.1021/ac502670t〉
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https://hal.univ-lorraine.fr/hal-01498463
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Soumis le : jeudi 30 mars 2017 - 10:09:18
Dernière modification le : jeudi 24 mai 2018 - 10:32:01

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Mathieu Etienne, Manuel Dossot, Jérôme Grausem, Grégoire Herzog. Combined Raman Microspectrometer and Shearforce Regulated SECM for Corrosion and Self-Healing Analysis. Analytical Chemistry, American Chemical Society, 2014, 86 (22), pp.11203 - 11210. 〈http://pubs.acs.org/doi/abs/10.1021/ac502670t〉. 〈10.1021/ac502670t〉. 〈hal-01498463〉

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