Electrodeposition of Nickel-Zinc Alloy from a Sulfamate Bath

Gabriella Roventi

doi:doi:10.11648/j.am.s.2015040301.13

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Electrodeposition of Nickel-Zinc Alloy from a Sulfamate Bath

Gabriella Roventi

Published in Advances in Materials (Volume 4, Issue 3-1)

Received: 13 May 2015 Accepted: 19 May 2015 Published: 18 June 2015

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Abstract

The electrodeposition of Ni-Zn alloy coatings having high nickel content (74-97 wt%) from a sulfamate bath was studied. The investigation was performed by means of cyclic voltammetry, potentiostatic electrodeposition, X-ray diffraction, scanning electron microscopy and energy dispersive X-ray analysis. The effect of the experimental parameters (deposition potential, zinc concentration, addition of sodiumdodecylsulphate) on the coating composition, morphology and structure was studied. The obtained results show that the addition of Zn2+ to the deposition bath leads to a strong decrease in the cathodic current density, indicating a remarkable inhibition of Ni reduction. Even if anomalous codeposition was observed for all the studied experimental conditions, nickel rich alloys were obtained due to the mass transport control. A sudden decrease in the current efficiency, indicating a decrease in the hydrogen overvoltage, was found on increasing zinc percentage in the alloy over than about 15 wt%. The incorporation of Zn in the cfc Ni lattice up to about 20 wt% leads to a grain refinement and to an increase in hardness.

Published in	Advances in Materials (Volume 4, Issue 3-1) This article belongs to the Special Issue Advances in Electrodeposited Materials: Phase Formation, Structure and Properties
DOI	10.11648/j.am.s.2015040301.13
Page(s)	21-26
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2015. Published by Science Publishing Group

Keywords

Nickel, Zinc, Alloy, Electrodeposition, Sulfamate Bath

References

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Gabriella Roventi. (2015). Electrodeposition of Nickel-Zinc Alloy from a Sulfamate Bath. Advances in Materials, 4(3-1), 21-26. https://doi.org/10.11648/j.am.s.2015040301.13

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Gabriella Roventi. Electrodeposition of Nickel-Zinc Alloy from a Sulfamate Bath. Adv. Mater. 2015, 4(3-1), 21-26. doi: 10.11648/j.am.s.2015040301.13

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AMA Style

Gabriella Roventi. Electrodeposition of Nickel-Zinc Alloy from a Sulfamate Bath. Adv Mater. 2015;4(3-1):21-26. doi: 10.11648/j.am.s.2015040301.13

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@article{10.11648/j.am.s.2015040301.13,
  author = {Gabriella Roventi},
  title = {Electrodeposition of Nickel-Zinc Alloy from a Sulfamate Bath},
  journal = {Advances in Materials},
  volume = {4},
  number = {3-1},
  pages = {21-26},
  doi = {10.11648/j.am.s.2015040301.13},
  url = {https://doi.org/10.11648/j.am.s.2015040301.13},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.am.s.2015040301.13},
  abstract = {The electrodeposition of Ni-Zn alloy coatings having high nickel content (74-97 wt%) from a sulfamate bath was studied. The investigation was performed by means of cyclic voltammetry, potentiostatic electrodeposition, X-ray diffraction, scanning electron microscopy and energy dispersive X-ray analysis. The effect of the experimental parameters (deposition potential, zinc concentration, addition of sodiumdodecylsulphate) on the coating composition, morphology and structure was studied. The obtained results show that the addition of Zn2+ to the deposition bath leads to a strong decrease in the cathodic current density, indicating a remarkable inhibition of Ni reduction. Even if anomalous codeposition was observed for all the studied experimental conditions, nickel rich alloys were obtained due to the mass transport control. A sudden decrease in the current efficiency, indicating a decrease in the hydrogen overvoltage, was found on increasing zinc percentage in the alloy over than about 15 wt%. The incorporation of Zn in the cfc Ni lattice up to about 20 wt% leads to a grain refinement and to an increase in hardness.},
 year = {2015}
}

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TY  - JOUR
T1  - Electrodeposition of Nickel-Zinc Alloy from a Sulfamate Bath
AU  - Gabriella Roventi
Y1  - 2015/06/18
PY  - 2015
N1  - https://doi.org/10.11648/j.am.s.2015040301.13
DO  - 10.11648/j.am.s.2015040301.13
T2  - Advances in Materials
JF  - Advances in Materials
JO  - Advances in Materials
SP  - 21
EP  - 26
PB  - Science Publishing Group
SN  - 2327-252X
UR  - https://doi.org/10.11648/j.am.s.2015040301.13
AB  - The electrodeposition of Ni-Zn alloy coatings having high nickel content (74-97 wt%) from a sulfamate bath was studied. The investigation was performed by means of cyclic voltammetry, potentiostatic electrodeposition, X-ray diffraction, scanning electron microscopy and energy dispersive X-ray analysis. The effect of the experimental parameters (deposition potential, zinc concentration, addition of sodiumdodecylsulphate) on the coating composition, morphology and structure was studied. The obtained results show that the addition of Zn2+ to the deposition bath leads to a strong decrease in the cathodic current density, indicating a remarkable inhibition of Ni reduction. Even if anomalous codeposition was observed for all the studied experimental conditions, nickel rich alloys were obtained due to the mass transport control. A sudden decrease in the current efficiency, indicating a decrease in the hydrogen overvoltage, was found on increasing zinc percentage in the alloy over than about 15 wt%. The incorporation of Zn in the cfc Ni lattice up to about 20 wt% leads to a grain refinement and to an increase in hardness.
VL  - 4
IS  - 3-1
ER  -

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Author Information

Gabriella Roventi

Dept. of Materials, Environmental Sciences and Urban Planning, Polytechnic University of Marche, Ancona, Italy

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Gabriella Roventi. (2015). Electrodeposition of Nickel-Zinc Alloy from a Sulfamate Bath. Advances in Materials, 4(3-1), 21-26. https://doi.org/10.11648/j.am.s.2015040301.13

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ACS Style

Gabriella Roventi. Electrodeposition of Nickel-Zinc Alloy from a Sulfamate Bath. Adv. Mater. 2015, 4(3-1), 21-26. doi: 10.11648/j.am.s.2015040301.13

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AMA Style

Gabriella Roventi. Electrodeposition of Nickel-Zinc Alloy from a Sulfamate Bath. Adv Mater. 2015;4(3-1):21-26. doi: 10.11648/j.am.s.2015040301.13

Copy | Download

@article{10.11648/j.am.s.2015040301.13,
  author = {Gabriella Roventi},
  title = {Electrodeposition of Nickel-Zinc Alloy from a Sulfamate Bath},
  journal = {Advances in Materials},
  volume = {4},
  number = {3-1},
  pages = {21-26},
  doi = {10.11648/j.am.s.2015040301.13},
  url = {https://doi.org/10.11648/j.am.s.2015040301.13},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.am.s.2015040301.13},
  abstract = {The electrodeposition of Ni-Zn alloy coatings having high nickel content (74-97 wt%) from a sulfamate bath was studied. The investigation was performed by means of cyclic voltammetry, potentiostatic electrodeposition, X-ray diffraction, scanning electron microscopy and energy dispersive X-ray analysis. The effect of the experimental parameters (deposition potential, zinc concentration, addition of sodiumdodecylsulphate) on the coating composition, morphology and structure was studied. The obtained results show that the addition of Zn2+ to the deposition bath leads to a strong decrease in the cathodic current density, indicating a remarkable inhibition of Ni reduction. Even if anomalous codeposition was observed for all the studied experimental conditions, nickel rich alloys were obtained due to the mass transport control. A sudden decrease in the current efficiency, indicating a decrease in the hydrogen overvoltage, was found on increasing zinc percentage in the alloy over than about 15 wt%. The incorporation of Zn in the cfc Ni lattice up to about 20 wt% leads to a grain refinement and to an increase in hardness.},
 year = {2015}
}

Copy | Download

TY  - JOUR
T1  - Electrodeposition of Nickel-Zinc Alloy from a Sulfamate Bath
AU  - Gabriella Roventi
Y1  - 2015/06/18
PY  - 2015
N1  - https://doi.org/10.11648/j.am.s.2015040301.13
DO  - 10.11648/j.am.s.2015040301.13
T2  - Advances in Materials
JF  - Advances in Materials
JO  - Advances in Materials
SP  - 21
EP  - 26
PB  - Science Publishing Group
SN  - 2327-252X
UR  - https://doi.org/10.11648/j.am.s.2015040301.13
AB  - The electrodeposition of Ni-Zn alloy coatings having high nickel content (74-97 wt%) from a sulfamate bath was studied. The investigation was performed by means of cyclic voltammetry, potentiostatic electrodeposition, X-ray diffraction, scanning electron microscopy and energy dispersive X-ray analysis. The effect of the experimental parameters (deposition potential, zinc concentration, addition of sodiumdodecylsulphate) on the coating composition, morphology and structure was studied. The obtained results show that the addition of Zn2+ to the deposition bath leads to a strong decrease in the cathodic current density, indicating a remarkable inhibition of Ni reduction. Even if anomalous codeposition was observed for all the studied experimental conditions, nickel rich alloys were obtained due to the mass transport control. A sudden decrease in the current efficiency, indicating a decrease in the hydrogen overvoltage, was found on increasing zinc percentage in the alloy over than about 15 wt%. The incorporation of Zn in the cfc Ni lattice up to about 20 wt% leads to a grain refinement and to an increase in hardness.
VL  - 4
IS  - 3-1
ER  -

Copy | Download