Synchrotron X-ray microtomography study of the role of Y in corrosion of magnesium alloy WE43

Alison Davenport; Cristiano Padovani; Brian Connolly; NPC Stevens; TAW Beale; M Stampanoni; A Groso

doi:10.1149/1.2400727

Synchrotron X-ray microtomography study of the role of Y in corrosion of magnesium alloy WE43

Alison Davenport, Cristiano Padovani, Brian Connolly, NPC Stevens, TAW Beale, M Stampanoni, A Groso

Metallurgy and Materials

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Abstract

Synchrotron X-ray microtomography has been used to study the distribution of Y in the aerospace magnesium alloy WE43 and its role in the morphology of corrosion attack. A three-dimensional Y map was obtained by acquiring tomographic images above and below the Y K-edge at 17 keV. Tomographic images from a heavily corroded as-cast WE43 sample showed that Y-rich regions of the matrix slow the propagation of corrosion. In situ time-dependent tomographic images of corrosion of heat-treated WE43 show that homogenization of the distribution of Y decreases the corrosion rate, but both general attack and pitting is still observed. (c) 2006 The Electrochemical Society.

Original language	English
Pages (from-to)	C5-8
Journal	Electrochemical and Solid-State Letters
Volume	10
Issue number	2
DOIs	https://doi.org/10.1149/1.2400727
Publication status	Published - 1 Jan 2007

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title = "Synchrotron X-ray microtomography study of the role of Y in corrosion of magnesium alloy WE43",

abstract = "Synchrotron X-ray microtomography has been used to study the distribution of Y in the aerospace magnesium alloy WE43 and its role in the morphology of corrosion attack. A three-dimensional Y map was obtained by acquiring tomographic images above and below the Y K-edge at 17 keV. Tomographic images from a heavily corroded as-cast WE43 sample showed that Y-rich regions of the matrix slow the propagation of corrosion. In situ time-dependent tomographic images of corrosion of heat-treated WE43 show that homogenization of the distribution of Y decreases the corrosion rate, but both general attack and pitting is still observed. (c) 2006 The Electrochemical Society.",

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AU - Davenport, Alison

AU - Padovani, Cristiano

AU - Connolly, Brian

AU - Stevens, NPC

AU - Beale, TAW

AU - Stampanoni, M

AU - Groso, A

PY - 2007/1/1

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N2 - Synchrotron X-ray microtomography has been used to study the distribution of Y in the aerospace magnesium alloy WE43 and its role in the morphology of corrosion attack. A three-dimensional Y map was obtained by acquiring tomographic images above and below the Y K-edge at 17 keV. Tomographic images from a heavily corroded as-cast WE43 sample showed that Y-rich regions of the matrix slow the propagation of corrosion. In situ time-dependent tomographic images of corrosion of heat-treated WE43 show that homogenization of the distribution of Y decreases the corrosion rate, but both general attack and pitting is still observed. (c) 2006 The Electrochemical Society.

AB - Synchrotron X-ray microtomography has been used to study the distribution of Y in the aerospace magnesium alloy WE43 and its role in the morphology of corrosion attack. A three-dimensional Y map was obtained by acquiring tomographic images above and below the Y K-edge at 17 keV. Tomographic images from a heavily corroded as-cast WE43 sample showed that Y-rich regions of the matrix slow the propagation of corrosion. In situ time-dependent tomographic images of corrosion of heat-treated WE43 show that homogenization of the distribution of Y decreases the corrosion rate, but both general attack and pitting is still observed. (c) 2006 The Electrochemical Society.

U2 - 10.1149/1.2400727

DO - 10.1149/1.2400727

M3 - Article

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SP - C5-8

JO - Electrochemical and Solid-State Letters

JF - Electrochemical and Solid-State Letters

IS - 2

ER -

Synchrotron X-ray microtomography study of the role of Y in corrosion of magnesium alloy WE43

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