Corrosion tests of nickel coatings prepared from a Watts-type bath |
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| Authors: | D E Rusu A Ispas A Bund C Gheorghies G Carac |
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| Affiliation: | (1) Departments of Physics and Chemistry, “Dunarea de Jos” University Galati, Domneasca Str. 47, 800008 Galati, Romania;(2) Technische Universitat Ilmenau Fakult?t f?r Elektrotechnik und Informationstechnik, Gustav-Kirchhoff-Stra?e 6, Arrheniusbau, 98693 Ilmenau, Germany; |
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| Abstract: | This paper deals with the preparation and characterization of thin Ni layers. The electrodeposition was carried out galvanostatically
from a Watts bath at different current densities in the range from 1 to 10 A dm−2 and for deposition times between 900 and 7200 s. The structure and the morphology of the nickel coatings were investigated
by SEM and XRD techniques. The microhardness of deposited layers, the electrochemical behavior and the corrosion properties
of the deposits were investigated by means of Vickers microhardness, polarization measurements, and electrochemical impedance
spectroscopy (EIS). The uniform deposits showed fine grains and good protection against corrosion. |
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