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<p>In the present study, the effects of bath concentration and applied current density on the electrodeposited Ni–Pb coatings’ properties were investigated using scanning electron microscopy, X-ray diffraction spectroscopy, potentiodynamic polarization and pin-on-disk wear tests. The results showed that Pb content of the coatings varies between 6.11 wt% and 12.42 wt% depending on the electrodeposition parameters. Coatings with higher Pb content have surface morphologies including coarse spherical clusters of fine Ni–Pb crystallites. Such coatings exhibit lower corrosion resistance (but enhanced passive behavior) than those that include less Pb in their respective chemical composition. Wear test results showed that Ni–Pb coating 6.11 wt% Pb has the most wear resistance among the others, further increase in coatings’ Pb content has an adverse effect of their wear resistance.</p> Graphical abstract <p></p>

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Electrodeposition and characterization of metastable Ni–Pb alloy coatings

  • 期刊论文

  • 发表日期：

    2026年4月10日

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  • R. Ghafari,
  • P. Najafisayar

摘要

In the present study, the effects of bath concentration and applied current density on the electrodeposited Ni–Pb coatings’ properties were investigated using scanning electron microscopy, X-ray diffraction spectroscopy, potentiodynamic polarization and pin-on-disk wear tests. The results showed that Pb content of the coatings varies between 6.11 wt% and 12.42 wt% depending on the electrodeposition parameters. Coatings with higher Pb content have surface morphologies including coarse spherical clusters of fine Ni–Pb crystallites. Such coatings exhibit lower corrosion resistance (but enhanced passive behavior) than those that include less Pb in their respective chemical composition. Wear test results showed that Ni–Pb coating 6.11 wt% Pb has the most wear resistance among the others, further increase in coatings’ Pb content has an adverse effect of their wear resistance.

Graphical abstract