Evolution of corrosion resistance and passive film properties of Ni-Mo alloy coatings during exposure to 0.5 M NaCl solution

Agnieszka Laszczyńska , Włodzimierz Tylus , Juliusz Winiarski , Irena Szczygieł

Abstract

The corrosion properties of Ni-Mo alloy coatings with different molybdenum content (11–32 wt%) were investigated in the course of exposure to 0.5 M NaCl solution. Polarization resistance and impedance measurements showed that after contact with corrosive media, the formation of passive film on the coating surface, determines the corrosion resistance of Ni-Mo alloys. XPS analysis revealed that, the passive film growth was enhanced by the presence of higher amounts (26–28 wt%) of Mo in the coating. It was found, that after exposure to corrosive solution, Mo oxides occurred at the passive film/metal interface, while Ni hydroxide dominated in the bulk of the passive film.
Author Agnieszka Laszczyńska (EaE / IChaFT / DNCh)
Agnieszka Laszczyńska,,
- Department of Non-organic Chemistry
, Włodzimierz Tylus - [Wrocław University of Science and Technology]
Włodzimierz Tylus,,
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, Juliusz Winiarski - [Wrocław University of Science and Technology]
Juliusz Winiarski,,
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, Irena Szczygieł (EaE / IChaFT / DNCh)
Irena Szczygieł,,
- Department of Non-organic Chemistry
Journal seriesSurface and Coatings Technology, ISSN 0257-8972, (A 35 pkt)
Issue year2017
Vol317
Pages26-37
Publication size in sheets0.55
Keywords in EnglishNi-Mo alloy, Electrodeposition, XPS, Passive film, LPR, EIS
DOIDOI:10.1016/j.surfcoat.2017.03.043
Languageen angielski
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Evolution of corrosion resistance and passive film properties of Ni-Mo alloy coatings during exposure to 0.5 M NaCl solution.pdf 2,64 MB
Score (nominal)35
Score sourcejournalList
Publication indicators Scopus Citations = 13
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