Electrochemical behaviour of ternary Ni-Zn-P thin films deposition on steel substrate

Abstract

Ternary Ni-Zn-P alloy thin films with a thickness of 15-20 µm are considered as a replacement for cadmium sacrificial coatings for anticorrosive protection of steel parts working in highly corrosive media. Anticorrosive Ni-Zn-P thin films has been electrochemically deposited from aqueous sulphate solutions on carbon steel substrate. The influence of bath composition (variable ZnSO ₄ ·7H ₂ O contents) and electrodeposition type (potentiostatic or galvanostatic) on physical-chemical and corrosion characteristics of obtained films have been studied. Films are characterized by energy dispersive analysis (EDAX) and scanning electron microscopy (SEM). The corrosion tests are performed in 3% NaCl solution with optimal resulting values of -916.2 mV vs. saturated calomel electrode (SCE) for the corrosion potential and 13.4 µA·cm ^-2 for the corrosion current density. The calculated value for the corrosive attack protection efficiency is 67.7%.

Original language	English
Pages (from-to)	572-577
Number of pages	6
Journal	Indian Journal of Chemical Technology
Volume	25
Issue number	6
Publication status	Published - 1 Nov 2018
Externally published	Yes

Keywords

Corrosion
Corrosion test
Electrodeposition
Ni-zn-p
Sulphate
Thin films

ASJC Scopus subject areas

Chemistry(all)
Chemical Engineering(all)

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Electrochemical behaviour of ternary Ni-Zn-P thin films deposition on steel substrate. / Popescu, Ana Maria; Soare, Vasile; Burada, Marian; Mitrică, Dumitru; Constantin, Ionut; Bădiliţă, Viorel; Minculescu, Florin; Cotrut, Cosmin; Neacsu, Elena Ionela; Donath, Cristina; Constantin, Virgil.

In: Indian Journal of Chemical Technology, Vol. 25, No. 6, 01.11.2018, p. 572-577.

Research output: Contribution to journal › Article › peer-review

Popescu, Ana Maria ; Soare, Vasile ; Burada, Marian ; Mitrică, Dumitru ; Constantin, Ionut ; Bădiliţă, Viorel ; Minculescu, Florin ; Cotrut, Cosmin ; Neacsu, Elena Ionela ; Donath, Cristina ; Constantin, Virgil. / Electrochemical behaviour of ternary Ni-Zn-P thin films deposition on steel substrate. In: Indian Journal of Chemical Technology. 2018 ; Vol. 25, No. 6. pp. 572-577.

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abstract = " Ternary Ni-Zn-P alloy thin films with a thickness of 15-20 µm are considered as a replacement for cadmium sacrificial coatings for anticorrosive protection of steel parts working in highly corrosive media. Anticorrosive Ni-Zn-P thin films has been electrochemically deposited from aqueous sulphate solutions on carbon steel substrate. The influence of bath composition (variable ZnSO 4 ·7H 2 O contents) and electrodeposition type (potentiostatic or galvanostatic) on physical-chemical and corrosion characteristics of obtained films have been studied. Films are characterized by energy dispersive analysis (EDAX) and scanning electron microscopy (SEM). The corrosion tests are performed in 3% NaCl solution with optimal resulting values of -916.2 mV vs. saturated calomel electrode (SCE) for the corrosion potential and 13.4 µA·cm -2 for the corrosion current density. The calculated value for the corrosive attack protection efficiency is 67.7%. ",

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AU - Popescu, Ana Maria

AU - Soare, Vasile

AU - Burada, Marian

AU - Mitrică, Dumitru

AU - Constantin, Ionut

AU - Bădiliţă, Viorel

AU - Minculescu, Florin

AU - Cotrut, Cosmin

AU - Neacsu, Elena Ionela

AU - Donath, Cristina

AU - Constantin, Virgil

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N2 - Ternary Ni-Zn-P alloy thin films with a thickness of 15-20 µm are considered as a replacement for cadmium sacrificial coatings for anticorrosive protection of steel parts working in highly corrosive media. Anticorrosive Ni-Zn-P thin films has been electrochemically deposited from aqueous sulphate solutions on carbon steel substrate. The influence of bath composition (variable ZnSO 4 ·7H 2 O contents) and electrodeposition type (potentiostatic or galvanostatic) on physical-chemical and corrosion characteristics of obtained films have been studied. Films are characterized by energy dispersive analysis (EDAX) and scanning electron microscopy (SEM). The corrosion tests are performed in 3% NaCl solution with optimal resulting values of -916.2 mV vs. saturated calomel electrode (SCE) for the corrosion potential and 13.4 µA·cm -2 for the corrosion current density. The calculated value for the corrosive attack protection efficiency is 67.7%.

AB - Ternary Ni-Zn-P alloy thin films with a thickness of 15-20 µm are considered as a replacement for cadmium sacrificial coatings for anticorrosive protection of steel parts working in highly corrosive media. Anticorrosive Ni-Zn-P thin films has been electrochemically deposited from aqueous sulphate solutions on carbon steel substrate. The influence of bath composition (variable ZnSO 4 ·7H 2 O contents) and electrodeposition type (potentiostatic or galvanostatic) on physical-chemical and corrosion characteristics of obtained films have been studied. Films are characterized by energy dispersive analysis (EDAX) and scanning electron microscopy (SEM). The corrosion tests are performed in 3% NaCl solution with optimal resulting values of -916.2 mV vs. saturated calomel electrode (SCE) for the corrosion potential and 13.4 µA·cm -2 for the corrosion current density. The calculated value for the corrosive attack protection efficiency is 67.7%.

KW - Corrosion

KW - Corrosion test

KW - Electrodeposition

KW - Ni-zn-p

KW - Sulphate

KW - Thin films

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