Improvement of the erosion-corrosion resistance of magnesium by electroless Ni-P/Ni(OH)2-ceramic nanoparticle composite coatings

J. A. Calderón; J. P. Jiménez; A. A. Zuleta

doi:10.1016/j.surfcoat.2016.04.063

Improvement of the erosion-corrosion resistance of magnesium by electroless Ni-P/Ni(OH)₂-ceramic nanoparticle composite coatings

J. A. Calderón
, J. P. Jiménez
, A. A. Zuleta

Research output: Contribution to scientific journal › Article in an indexed scientific journal › peer-review

59 Scopus citations

Abstract

In this study, Ni-P/Ni(OH)₂-ceramic nanoparticle composite coatings were directly deposited onto commercially pure magnesium in order to improve its resistance to erosion-corrosion damage. The effect of three incorporated ceramic nanoparticles (TiO₂, SiC and diamond) on the erosion-corrosion resistance of the composite coatings was also investigated. The composite coatings were obtained by an electroless process and were characterized using scanning electron microscopy, Raman spectroscopy and X-ray diffraction. The erosion-corrosion behavior of fabricated composite coatings was elucidated using in situ techniques of potentiodynamic polarization and electrochemical impedance spectroscopy (EIS). It was found that the simultaneous formation of Ni-P and β-Ni(OH)₂ phases in the coating and the improvement in the micro hardness of the coating were due to the incorporation of nanoparticles. According to the polarization curves and EIS spectra, the β-Ni(OH)₂ compound behaves like a pre-passive film which is responsible for substantial improvement in the anticorrosion properties of the coating. Better erosion-corrosion resistance was obtained for the composite coatings than the neat Ni-P coating. This was a consequence of the β-Ni(OH)₂ co-deposition. The formation of the β-Ni(OH)₂ compound in the coating does not depend on the nature and concentration of the nanoparticles.

Original language	English
Pages (from-to)	167-178
Number of pages	12
Journal	Surface and Coatings Technology
Volume	304
DOIs	https://doi.org/10.1016/j.surfcoat.2016.04.063
State	Published - 25 Oct 2016

Bibliographical note

Publisher Copyright:
© 2016 Elsevier B.V.

Keywords

Ceramic nanoparticle
Composite coating
Erosion-corrosion test
Magnesium
Ni-P electroless

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10.1016/j.surfcoat.2016.04.063

Cite this

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title = "Improvement of the erosion-corrosion resistance of magnesium by electroless Ni-P/Ni(OH)2-ceramic nanoparticle composite coatings",

abstract = "In this study, Ni-P/Ni(OH)2-ceramic nanoparticle composite coatings were directly deposited onto commercially pure magnesium in order to improve its resistance to erosion-corrosion damage. The effect of three incorporated ceramic nanoparticles (TiO2, SiC and diamond) on the erosion-corrosion resistance of the composite coatings was also investigated. The composite coatings were obtained by an electroless process and were characterized using scanning electron microscopy, Raman spectroscopy and X-ray diffraction. The erosion-corrosion behavior of fabricated composite coatings was elucidated using in situ techniques of potentiodynamic polarization and electrochemical impedance spectroscopy (EIS). It was found that the simultaneous formation of Ni-P and β-Ni(OH)2 phases in the coating and the improvement in the micro hardness of the coating were due to the incorporation of nanoparticles. According to the polarization curves and EIS spectra, the β-Ni(OH)2 compound behaves like a pre-passive film which is responsible for substantial improvement in the anticorrosion properties of the coating. Better erosion-corrosion resistance was obtained for the composite coatings than the neat Ni-P coating. This was a consequence of the β-Ni(OH)2 co-deposition. The formation of the β-Ni(OH)2 compound in the coating does not depend on the nature and concentration of the nanoparticles.",

keywords = "Ceramic nanoparticle, Composite coating, Erosion-corrosion test, Magnesium, Ni-P electroless",

author = "Calder{\'o}n, \{J. A.\} and Jim{\'e}nez, \{J. P.\} and Zuleta, \{A. A.\}",

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T1 - Improvement of the erosion-corrosion resistance of magnesium by electroless Ni-P/Ni(OH)2-ceramic nanoparticle composite coatings

AU - Calderón, J. A.

AU - Jiménez, J. P.

AU - Zuleta, A. A.

PY - 2016/10/25

Y1 - 2016/10/25

N2 - In this study, Ni-P/Ni(OH)2-ceramic nanoparticle composite coatings were directly deposited onto commercially pure magnesium in order to improve its resistance to erosion-corrosion damage. The effect of three incorporated ceramic nanoparticles (TiO2, SiC and diamond) on the erosion-corrosion resistance of the composite coatings was also investigated. The composite coatings were obtained by an electroless process and were characterized using scanning electron microscopy, Raman spectroscopy and X-ray diffraction. The erosion-corrosion behavior of fabricated composite coatings was elucidated using in situ techniques of potentiodynamic polarization and electrochemical impedance spectroscopy (EIS). It was found that the simultaneous formation of Ni-P and β-Ni(OH)2 phases in the coating and the improvement in the micro hardness of the coating were due to the incorporation of nanoparticles. According to the polarization curves and EIS spectra, the β-Ni(OH)2 compound behaves like a pre-passive film which is responsible for substantial improvement in the anticorrosion properties of the coating. Better erosion-corrosion resistance was obtained for the composite coatings than the neat Ni-P coating. This was a consequence of the β-Ni(OH)2 co-deposition. The formation of the β-Ni(OH)2 compound in the coating does not depend on the nature and concentration of the nanoparticles.

AB - In this study, Ni-P/Ni(OH)2-ceramic nanoparticle composite coatings were directly deposited onto commercially pure magnesium in order to improve its resistance to erosion-corrosion damage. The effect of three incorporated ceramic nanoparticles (TiO2, SiC and diamond) on the erosion-corrosion resistance of the composite coatings was also investigated. The composite coatings were obtained by an electroless process and were characterized using scanning electron microscopy, Raman spectroscopy and X-ray diffraction. The erosion-corrosion behavior of fabricated composite coatings was elucidated using in situ techniques of potentiodynamic polarization and electrochemical impedance spectroscopy (EIS). It was found that the simultaneous formation of Ni-P and β-Ni(OH)2 phases in the coating and the improvement in the micro hardness of the coating were due to the incorporation of nanoparticles. According to the polarization curves and EIS spectra, the β-Ni(OH)2 compound behaves like a pre-passive film which is responsible for substantial improvement in the anticorrosion properties of the coating. Better erosion-corrosion resistance was obtained for the composite coatings than the neat Ni-P coating. This was a consequence of the β-Ni(OH)2 co-deposition. The formation of the β-Ni(OH)2 compound in the coating does not depend on the nature and concentration of the nanoparticles.

KW - Ceramic nanoparticle

KW - Composite coating

KW - Erosion-corrosion test

KW - Magnesium

KW - Ni-P electroless

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DO - 10.1016/j.surfcoat.2016.04.063

M3 - Artículo en revista científica indexada

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JO - Surface and Coatings Technology

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