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Jibo Jiang, Chenqi Feng, Wei Qian, Libin Yu, Fengying Ye, Qingdong Zhong and Sheng Han
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Surface Review and Letters (SRL), 2016, vol. 23, issue 02, 1-11
Abstract: The electrodeposition of Ni–nano-Cr2O3 composite coatings was studied in electrolyte containing different contents of Cr2O3 nanoparticles (Cr2O3 NPs) on mild steel surfaces. Some techniques such as X-ray diffraction (XRD), scanning electron microscopy (SEM), microhardness, the potentiodynamic polarization curves (Tafel) and electrochemical impedance spectroscopy (EIS) were used to compare pure Ni coatings and Ni–nano-Cr2O3 composite coatings. The results show that the incorporation of Cr2O3 NPs resulted in an increase of hardness and corrosion resistance, and the maximum microhardness of Ni-nano-Cr2O3 composite coatings reaches about 495 HV. The coatings exhibit an active-passive transition and relatively large impedance values. Moreover, the effect of Cr2O3 NPs on Ni electrocrystallization is also investigated by cyclic voltammetry (CV) and EIS spectroscopy, which demonstrates that the nature of Ni-based composite coatings changes attributes to Cr2O3 NPs by offering more nucleation sites and less charge transfer resistance.
Keywords: Electrodeposition; corrosion resistance; cyclic voltammetry; Tafel polarization; EIS spectroscopy (search for similar items in EconPapers)
Date: 2016
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Surface Review and Letters (SRL) is currently edited by S Y Tong
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Jibo Jiang, Chenqi Feng, Wei Qian, Libin Yu, Fengying Ye, Qingdong Zhong and Sheng Han
Additional contact information
Surface Review and Letters (SRL), 2016, vol. 23, issue 02, 1-11
Abstract: The electrodeposition of Ni–nano-Cr2O3 composite coatings was studied in electrolyte containing different contents of Cr2O3 nanoparticles (Cr2O3 NPs) on mild steel surfaces. Some techniques such as X-ray diffraction (XRD), scanning electron microscopy (SEM), microhardness, the potentiodynamic polarization curves (Tafel) and electrochemical impedance spectroscopy (EIS) were used to compare pure Ni coatings and Ni–nano-Cr2O3 composite coatings. The results show that the incorporation of Cr2O3 NPs resulted in an increase of hardness and corrosion resistance, and the maximum microhardness of Ni-nano-Cr2O3 composite coatings reaches about 495 HV. The coatings exhibit an active-passive transition and relatively large impedance values. Moreover, the effect of Cr2O3 NPs on Ni electrocrystallization is also investigated by cyclic voltammetry (CV) and EIS spectroscopy, which demonstrates that the nature of Ni-based composite coatings changes attributes to Cr2O3 NPs by offering more nucleation sites and less charge transfer resistance.
Keywords: Electrodeposition; corrosion resistance; cyclic voltammetry; Tafel polarization; EIS spectroscopy (search for similar items in EconPapers)
Date: 2016
References: Add references at CitEc
Citations Track citations by RSS feed
Downloads: (external link)
http://www.worldscientific.com/doi/abs/10.1142/S0218625X15501115
Access to full text is restricted to subscribers.
Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.
Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text
Persistent link: http://EconPapers.repec.org/RePEc:wsi:srlxxx:v:23:y:2016:i:02:n:s0218625x15501115
Ordering information: This journal article can be ordered from
sales@wspc.com.sg
Access Statistics for this article
Surface Review and Letters (SRL) is currently edited by S Y Tong
More articles in Surface Review and Letters (SRL) from World Scientific Publishing Co. Pte. Ltd.
Series data maintained by Tai Tone Lim (tltai@wspc.com.sg).
For further details log on website :
http://econpapers.repec.org/article/wsisrlxxx/v_3a23_3ay_3a2016_3ai_3a02_3an_3as0218625x15501115.htm
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