Interfacial study of the formation mechanism of corrosion resistant strontium phosphate coatings upon Mg-3Al-4.3Ca-0.1Mn

Chong Ke; Ming Shi Song; Rong Chang Zeng; Yao Qiu; Yu Zhang; Rui Feng Zhang; Rui Liang Liu; Ivan Cole; Nick Birbilis; Xiao Bo Chen

doi:10.1016/j.corsci.2019.02.024

Interfacial study of the formation mechanism of corrosion resistant strontium phosphate coatings upon Mg-3Al-4.3Ca-0.1Mn

Chong Ke, Ming Shi Song, Rong Chang Zeng^*, Yao Qiu, Yu Zhang, Rui Feng Zhang, Rui Liang Liu, Ivan Cole, Nick Birbilis, Xiao Bo Chen

^*Corresponding author for this work

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

42 Citations (Scopus)

Abstract

Strontium phosphate (SrPO ₄ ) conversion coatings with the ability to impart significant corrosion resistance were prepared upon magnesium alloy Mg-3Al-4.3Ca-0.1 Mn (wt.%). Scanning electron microscopy equipped with energy dispersive spectroscopy and transmission electron microscopy were also employed to characterise surface and interfacial morphology, along with the composition of the coatings. The protective performance of SrPO ₄ coatings was examined by potentiodynamic polarisation curves and immersion testing. A coating-growth mechanism was proposed and correlations between processing parameters and coating quality was established. The findings herein provide new insights for design of environmentally-benign and corrosion resistant coatings upon magnesium alloys through a simple chemical conversion technique.

Original language	English
Pages (from-to)	143-153
Number of pages	11
Journal	Corrosion Science
Volume	151
DOIs	https://doi.org/10.1016/j.corsci.2019.02.024
Publication status	Published - 1 May 2019

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10.1016/j.corsci.2019.02.024

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title = "Interfacial study of the formation mechanism of corrosion resistant strontium phosphate coatings upon Mg-3Al-4.3Ca-0.1Mn",

abstract = " Strontium phosphate (SrPO 4 ) conversion coatings with the ability to impart significant corrosion resistance were prepared upon magnesium alloy Mg-3Al-4.3Ca-0.1 Mn (wt.%). Scanning electron microscopy equipped with energy dispersive spectroscopy and transmission electron microscopy were also employed to characterise surface and interfacial morphology, along with the composition of the coatings. The protective performance of SrPO 4 coatings was examined by potentiodynamic polarisation curves and immersion testing. A coating-growth mechanism was proposed and correlations between processing parameters and coating quality was established. The findings herein provide new insights for design of environmentally-benign and corrosion resistant coatings upon magnesium alloys through a simple chemical conversion technique.",

keywords = "A. Magnesium, B. SEM, B. TEM, C. Interfaces, C. Passive film",

author = "Chong Ke and Song, {Ming Shi} and Zeng, {Rong Chang} and Yao Qiu and Yu Zhang and Zhang, {Rui Feng} and Liu, {Rui Liang} and Ivan Cole and Nick Birbilis and Chen, {Xiao Bo}",

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doi = "10.1016/j.corsci.2019.02.024",

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T1 - Interfacial study of the formation mechanism of corrosion resistant strontium phosphate coatings upon Mg-3Al-4.3Ca-0.1Mn

AU - Ke, Chong

AU - Song, Ming Shi

AU - Zeng, Rong Chang

AU - Qiu, Yao

AU - Zhang, Yu

AU - Zhang, Rui Feng

AU - Liu, Rui Liang

AU - Cole, Ivan

AU - Birbilis, Nick

AU - Chen, Xiao Bo

PY - 2019/5/1

Y1 - 2019/5/1

N2 - Strontium phosphate (SrPO 4 ) conversion coatings with the ability to impart significant corrosion resistance were prepared upon magnesium alloy Mg-3Al-4.3Ca-0.1 Mn (wt.%). Scanning electron microscopy equipped with energy dispersive spectroscopy and transmission electron microscopy were also employed to characterise surface and interfacial morphology, along with the composition of the coatings. The protective performance of SrPO 4 coatings was examined by potentiodynamic polarisation curves and immersion testing. A coating-growth mechanism was proposed and correlations between processing parameters and coating quality was established. The findings herein provide new insights for design of environmentally-benign and corrosion resistant coatings upon magnesium alloys through a simple chemical conversion technique.

AB - Strontium phosphate (SrPO 4 ) conversion coatings with the ability to impart significant corrosion resistance were prepared upon magnesium alloy Mg-3Al-4.3Ca-0.1 Mn (wt.%). Scanning electron microscopy equipped with energy dispersive spectroscopy and transmission electron microscopy were also employed to characterise surface and interfacial morphology, along with the composition of the coatings. The protective performance of SrPO 4 coatings was examined by potentiodynamic polarisation curves and immersion testing. A coating-growth mechanism was proposed and correlations between processing parameters and coating quality was established. The findings herein provide new insights for design of environmentally-benign and corrosion resistant coatings upon magnesium alloys through a simple chemical conversion technique.

KW - A. Magnesium

KW - B. SEM

KW - B. TEM

KW - C. Interfaces

KW - C. Passive film

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U2 - 10.1016/j.corsci.2019.02.024

DO - 10.1016/j.corsci.2019.02.024

M3 - Article

SN - 0010-938X

VL - 151

SP - 143

EP - 153

JO - Corrosion Science

JF - Corrosion Science

ER -

Interfacial study of the formation mechanism of corrosion resistant strontium phosphate coatings upon Mg-3Al-4.3Ca-0.1Mn

Abstract

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