A study on corrosion behaviour of magnetron sputtered Zn-Mg coating deposited onto electro-galvanized steel

Caizhen Yao; Weiwei Chen; Tianping Zhu; See Leng Tay; Wei Gao

doi:10.1016/j.surfcoat.2014.03.055

A study on corrosion behaviour of magnetron sputtered Zn-Mg coating deposited onto electro-galvanized steel

Caizhen Yao^*, Weiwei Chen, Tianping Zhu, See Leng Tay, Wei Gao

^*Corresponding author for this work

School of Material Science and Engineering

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

10 Citations (Scopus)

Abstract

In this study, a nano-structured Zn-Mg coating was prepared by magnetron co-sputtering on electro-galvanized carbon steel. The microstructure and phase structure of Zn-Mg coating and its behaviour during saltwater immersion test were investigated by means of optical microscopy (OM), environmental scanning electron microscopy (ESEM), X-ray diffractometry (XRD) and electrochemical workstation. Electrochemical impedance spectroscopy (EIS) as a sensitive and reliable method was employed in corrosion mechanism research. The results show the formation process of a passive film on the surface of Zn-Mg coating during the immersion time range. The formation mechanism of this dense corrosion product Zn₅(OH)₈Cl₂·H₂O layer was also discussed. An electroplated Zn coating was also investigated for comparison purposes.

Original language	English
Pages (from-to)	90-96
Number of pages	7
Journal	Surface and Coatings Technology
Volume	249
DOIs	https://doi.org/10.1016/j.surfcoat.2014.03.055
Publication status	Published - 25 Jun 2014

Keywords

EIS
Metal coatings
Passive films
Sputtered films

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10.1016/j.surfcoat.2014.03.055

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title = "A study on corrosion behaviour of magnetron sputtered Zn-Mg coating deposited onto electro-galvanized steel",

abstract = "In this study, a nano-structured Zn-Mg coating was prepared by magnetron co-sputtering on electro-galvanized carbon steel. The microstructure and phase structure of Zn-Mg coating and its behaviour during saltwater immersion test were investigated by means of optical microscopy (OM), environmental scanning electron microscopy (ESEM), X-ray diffractometry (XRD) and electrochemical workstation. Electrochemical impedance spectroscopy (EIS) as a sensitive and reliable method was employed in corrosion mechanism research. The results show the formation process of a passive film on the surface of Zn-Mg coating during the immersion time range. The formation mechanism of this dense corrosion product Zn5(OH)8Cl2·H2O layer was also discussed. An electroplated Zn coating was also investigated for comparison purposes.",

keywords = "EIS, Metal coatings, Passive films, Sputtered films",

author = "Caizhen Yao and Weiwei Chen and Tianping Zhu and Tay, {See Leng} and Wei Gao",

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TY - JOUR

T1 - A study on corrosion behaviour of magnetron sputtered Zn-Mg coating deposited onto electro-galvanized steel

AU - Yao, Caizhen

AU - Chen, Weiwei

AU - Zhu, Tianping

AU - Tay, See Leng

AU - Gao, Wei

PY - 2014/6/25

Y1 - 2014/6/25

N2 - In this study, a nano-structured Zn-Mg coating was prepared by magnetron co-sputtering on electro-galvanized carbon steel. The microstructure and phase structure of Zn-Mg coating and its behaviour during saltwater immersion test were investigated by means of optical microscopy (OM), environmental scanning electron microscopy (ESEM), X-ray diffractometry (XRD) and electrochemical workstation. Electrochemical impedance spectroscopy (EIS) as a sensitive and reliable method was employed in corrosion mechanism research. The results show the formation process of a passive film on the surface of Zn-Mg coating during the immersion time range. The formation mechanism of this dense corrosion product Zn5(OH)8Cl2·H2O layer was also discussed. An electroplated Zn coating was also investigated for comparison purposes.

AB - In this study, a nano-structured Zn-Mg coating was prepared by magnetron co-sputtering on electro-galvanized carbon steel. The microstructure and phase structure of Zn-Mg coating and its behaviour during saltwater immersion test were investigated by means of optical microscopy (OM), environmental scanning electron microscopy (ESEM), X-ray diffractometry (XRD) and electrochemical workstation. Electrochemical impedance spectroscopy (EIS) as a sensitive and reliable method was employed in corrosion mechanism research. The results show the formation process of a passive film on the surface of Zn-Mg coating during the immersion time range. The formation mechanism of this dense corrosion product Zn5(OH)8Cl2·H2O layer was also discussed. An electroplated Zn coating was also investigated for comparison purposes.

KW - EIS

KW - Metal coatings

KW - Passive films

KW - Sputtered films

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U2 - 10.1016/j.surfcoat.2014.03.055

DO - 10.1016/j.surfcoat.2014.03.055

M3 - Article

AN - SCOPUS:84899657002

SN - 0257-8972

VL - 249

SP - 90

EP - 96

JO - Surface and Coatings Technology

JF - Surface and Coatings Technology

ER -

A study on corrosion behaviour of magnetron sputtered Zn-Mg coating deposited onto electro-galvanized steel

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Keywords

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