Influence of surface chemistry on the formation of crystalline hydroxide coatings on Mg alloys in liquid water and steam systems

Chong Ke; Yajie Wu; Yao Qiu; Junhao Duan; Nick Birbilis; Xiao-Bo Chen

doi:10.1016/j.corsci.2016.10.017

Influence of surface chemistry on the formation of crystalline hydroxide coatings on Mg alloys in liquid water and steam systems

Chong Ke, Yajie Wu, Yao Qiu, Junhao Duan, Nick Birbilis, Xiao-Bo Chen

Materials Science & Engineering

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

60 Citations (Scopus)

Abstract

An environmentally-friendly ‘steam-coating’ treatment was employed to prepare protective coatings on magnesium (Mg) and its alloys against corrosion. This involved a hydrothermal surface treatment performed in water vapour using a closed stainless steel autoclave at 150 °C for 3 h. The correlation between coating functionality and alloy chemistry, including the concentration of alloying elements of aluminium, zinc and rare earth, was studied. It was determined that Al played a significant role in the formation of a protective Mg(OH)₂ coating, whilst Zn and RE elements were not a key contributor to protective development.

Original language	English
Pages (from-to)	145-159
Number of pages	15
Journal	Corrosion Science
Volume	113
DOIs	https://doi.org/10.1016/j.corsci.2016.10.017
Publication status	Published - 1 Dec 2016

Keywords

A. Magnesium
A. Rare earth elements
B. Polarisation
B. SEM
C. Interfaces
C. Passive film

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10.1016/j.corsci.2016.10.017

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abstract = "An environmentally-friendly {\textquoteleft}steam-coating{\textquoteright} treatment was employed to prepare protective coatings on magnesium (Mg) and its alloys against corrosion. This involved a hydrothermal surface treatment performed in water vapour using a closed stainless steel autoclave at 150 °C for 3 h. The correlation between coating functionality and alloy chemistry, including the concentration of alloying elements of aluminium, zinc and rare earth, was studied. It was determined that Al played a significant role in the formation of a protective Mg(OH)2 coating, whilst Zn and RE elements were not a key contributor to protective development.",

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AU - Ke, Chong

AU - Wu, Yajie

AU - Qiu, Yao

AU - Duan, Junhao

AU - Birbilis, Nick

AU - Chen, Xiao-Bo

PY - 2016/12/1

Y1 - 2016/12/1

N2 - An environmentally-friendly ‘steam-coating’ treatment was employed to prepare protective coatings on magnesium (Mg) and its alloys against corrosion. This involved a hydrothermal surface treatment performed in water vapour using a closed stainless steel autoclave at 150 °C for 3 h. The correlation between coating functionality and alloy chemistry, including the concentration of alloying elements of aluminium, zinc and rare earth, was studied. It was determined that Al played a significant role in the formation of a protective Mg(OH)2 coating, whilst Zn and RE elements were not a key contributor to protective development.

AB - An environmentally-friendly ‘steam-coating’ treatment was employed to prepare protective coatings on magnesium (Mg) and its alloys against corrosion. This involved a hydrothermal surface treatment performed in water vapour using a closed stainless steel autoclave at 150 °C for 3 h. The correlation between coating functionality and alloy chemistry, including the concentration of alloying elements of aluminium, zinc and rare earth, was studied. It was determined that Al played a significant role in the formation of a protective Mg(OH)2 coating, whilst Zn and RE elements were not a key contributor to protective development.

KW - A. Magnesium

KW - A. Rare earth elements

KW - B. Polarisation

KW - B. SEM

KW - C. Interfaces

KW - C. Passive film

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DO - 10.1016/j.corsci.2016.10.017

M3 - Article

AN - SCOPUS:84994572040

SN - 0010-938X

VL - 113

SP - 145

EP - 159

JO - Corrosion Science

JF - Corrosion Science

ER -

Influence of surface chemistry on the formation of crystalline hydroxide coatings on Mg alloys in liquid water and steam systems

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Influence of surface chemistry on the formation of crystalline hydroxide coatings on Mg alloys in liquid water and steam systems

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