Clarifying the dissolution mechanisms and electrochemistry of Mg2Si as a function of solution pH

O. Gharbi; N. Birbilis

doi:10.1149/2.1061809jes

Clarifying the dissolution mechanisms and electrochemistry of Mg₂Si as a function of solution pH

O. Gharbi^*, N. Birbilis

^*Corresponding author for this work

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

37 Citations (Scopus)

Abstract

The dissolution kinetics of magnesium silicide (Mg2Si) were investigated herein. The rationalization of Mg₂Si electrochemistry is relevant in the context of several commercial aluminum alloys, magnesium alloys, and magnesium containing galvanising. The dissolution rates of Mg and Si were quantitatively measured, as a function of solution pH, using atomic emission spectroelectrochemistry (AESEC), providing previously unreported insights into the corrosion mechanism of Mg₂Si. Results revealed pH dependent dissolution of Mg and Si, in addition to the prominent role of Si in the passivation of Mg₂Si in slightly alkaline pH (8).

Original language	English
Pages (from-to)	C497-C501
Journal	Journal of the Electrochemical Society
Volume	165
Issue number	9
DOIs	https://doi.org/10.1149/2.1061809jes
Publication status	Published - 2018
Externally published	Yes

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title = "Clarifying the dissolution mechanisms and electrochemistry of Mg2Si as a function of solution pH",

abstract = "The dissolution kinetics of magnesium silicide (Mg2Si) were investigated herein. The rationalization of Mg2Si electrochemistry is relevant in the context of several commercial aluminum alloys, magnesium alloys, and magnesium containing galvanising. The dissolution rates of Mg and Si were quantitatively measured, as a function of solution pH, using atomic emission spectroelectrochemistry (AESEC), providing previously unreported insights into the corrosion mechanism of Mg2Si. Results revealed pH dependent dissolution of Mg and Si, in addition to the prominent role of Si in the passivation of Mg2Si in slightly alkaline pH (8).",

author = "O. Gharbi and N. Birbilis",

note = "Publisher Copyright: {\textcopyright} The Author(s) 2018.",

year = "2018",

doi = "10.1149/2.1061809jes",

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AU - Gharbi, O.

AU - Birbilis, N.

PY - 2018

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N2 - The dissolution kinetics of magnesium silicide (Mg2Si) were investigated herein. The rationalization of Mg2Si electrochemistry is relevant in the context of several commercial aluminum alloys, magnesium alloys, and magnesium containing galvanising. The dissolution rates of Mg and Si were quantitatively measured, as a function of solution pH, using atomic emission spectroelectrochemistry (AESEC), providing previously unreported insights into the corrosion mechanism of Mg2Si. Results revealed pH dependent dissolution of Mg and Si, in addition to the prominent role of Si in the passivation of Mg2Si in slightly alkaline pH (8).

AB - The dissolution kinetics of magnesium silicide (Mg2Si) were investigated herein. The rationalization of Mg2Si electrochemistry is relevant in the context of several commercial aluminum alloys, magnesium alloys, and magnesium containing galvanising. The dissolution rates of Mg and Si were quantitatively measured, as a function of solution pH, using atomic emission spectroelectrochemistry (AESEC), providing previously unreported insights into the corrosion mechanism of Mg2Si. Results revealed pH dependent dissolution of Mg and Si, in addition to the prominent role of Si in the passivation of Mg2Si in slightly alkaline pH (8).

UR - https://www.scopus.com/pages/publications/85049248889

U2 - 10.1149/2.1061809jes

DO - 10.1149/2.1061809jes

M3 - Article

SN - 0013-4651

VL - 165

SP - C497-C501

JO - Journal of the Electrochemical Society

JF - Journal of the Electrochemical Society

IS - 9

ER -

Clarifying the dissolution mechanisms and electrochemistry of Mg₂Si as a function of solution pH

Abstract

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