Electrochemical characterization of a Fe-based shape memory alloy in an alkaline medium and the behaviour in aggressive conditions
نویسندگان
چکیده
A Fe-17Mn-6Si-19Cr-4Ni-1(V,C) shape memory steel (SMS) was characterised electrochemically in its unstrained and pre-strained conditions. The work focused on analysing the passive films generated alkaline conditions, behaviour of those samples various Cl−/OH− ratios. were developed by cyclic voltammetry their characterisation performed electrochemical impedance spectroscopy (EIS) X-ray photoelectron (XPS); these tests also carried out 304 L stainless specimens for comparison purposes. results indicated that film characteristics (thickness composition) similar all samples, although higher corrosion resistance observed due to Cr content. In addition, aggressive conditions assessed potentiodynamic measurements. stated steels more sensitive than especially when alloy pre-strained. It SMS exhibited a characteristic morphology localized at grain boundaries.
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ژورنال
عنوان ژورنال: Electrochimica Acta
سال: 2023
ISSN: ['1873-3859', '0013-4686']
DOI: https://doi.org/10.1016/j.electacta.2023.142034