Nanocrystalline electrodeposited coatings have been the subject of numerous studies due to their supposed resistance against corrosion and their particular mechanical, electrical and magnetic properties. However, the superior corrosion resistance of lower grain size metals, particularly at the nanometer scale, has not been yet clearly established [1]. Actually, as grain size decreases, other parameters like surface roughness, crystallographic orientation, chemical contamination, vacancies concentration, internal stresses at different scales ..., which can affect the corrosion resistance, are also modified. The aim of our approach is to better understand the influence of the microstructural parameters, mainly grain size and tungsten content, on the corrosion resistance.
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