Optimization of the electrolytic bath used in the electrodeposition process of the Ni-W alloy

Authors

DOI:

https://doi.org/10.33448/rsd-v9i9.7331

Keywords:

Electrodeposition; Corrosion; Ni-W alloys.

Abstract

The aim of this work was to use an experimental design associated with the Response Surface Methodology (MSR) technique to evaluate the effect of the variation in the concentration of reagents used in the preparation of the electrolytic bath used to obtain the Ni-W alloy by electrodeposition. The methodology used in this study was quali-quantitative. The effect of the variation of the reagent’s concentration on the chemical composition of the deposited alloy, on the cathodic efficiency of the deposition process, and on the morphology of the coatings was evaluated. The corrosion resistance of the Ni-W alloy in a medium containing chloride ions (NaCl solution) was investigated using the Potentiodynamic Polarization (PP) technique. Results of composition showed that nickel was deposited preferentially in all experimental conditions evaluated. The coatings showed a nodular morphology dependent on the concentration of nickel in the deposits. The coating obtained using the highest concentrations of the metal sources (levels +1 and +1) showed the highest efficiency of the deposition process (65.30%). The Ni-W alloy showed greater protection against corrosion in a medium containing chloride ions, compared to the Fe-W alloy.

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Published

26/08/2020

How to Cite

OLIVEIRA, J. A. M.; ALMEIDA, A. F. de .; COSTA NETO, H. da; SOUSA, M. B. de; COSTA, J. D. .; DANTAS, D. L. .; CAMPOS, A. R. N. .; SANTANA, R. A. C. de . Optimization of the electrolytic bath used in the electrodeposition process of the Ni-W alloy . Research, Society and Development, [S. l.], v. 9, n. 9, p. e478997331, 2020. DOI: 10.33448/rsd-v9i9.7331. Disponível em: https://rsdjournal.org/index.php/rsd/article/view/7331. Acesso em: 25 apr. 2024.

Issue

Vol. 9 No. 9

Section

Engineerings

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Copyright (c) 2020 José Anderson Machado Oliveira; Arthur Filgueira de Almeida; Heleno da Costa Neto; Mikarla Baía de Sousa; Josiane Dantas Costa; Danilo Lima Dantas; Ana Regina Nascimento Campos; Renato Alexandre Costa de Santana

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