Slow positron beam study of corrosion behavior of AM60B magnesium alloy in NaCl solution

W. Yang; Z. J. Zhu; J. J. Wang; Y. C. Wu; T. Zhai; G. L. Song

doi:10.1016/j.corsci.2016.02.012

Slow positron beam study of corrosion behavior of AM60B magnesium alloy in NaCl solution

W. Yang, Z. J. Zhu, J. J. Wang, Y. C. Wu, T. Zhai, G. L. Song

Chemical and Materials Engineering

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

18 Scopus citations

Abstract

The corrosion behavior of super vacuum die-cast AM60B magnesium alloys immersed in a 5 wt% NaCl solution was investigated by slow positron beam technique, XRD, XPS, SEM and potentiodynamic polarization tests. The XRD and XPS results indicated that Mg(OH)₂ was main corrosion product in the salt solution. With prolonging the immersion time, a significant decrease of Doppler-broadened annihilation line-width parameter near the surface after corrosion was observed and interpreted that the pre-existing interfacial voids between oxide film and matrix might promote the formation of Mg(OH)₂ corrosion layer. Polarization tests found that Mg(OH)₂ could provide a temporary protection.

Original language	English
Pages (from-to)	271-280
Number of pages	10
Journal	Corrosion Science
Volume	106
DOIs	https://doi.org/10.1016/j.corsci.2016.02.012
State	Published - May 1 2016

Bibliographical note

Publisher Copyright:
© 2016 Elsevier Ltd.

Keywords

A. Magnesium
B. SEM
B. XRD

ASJC Scopus subject areas

General Chemistry
General Chemical Engineering
General Materials Science

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10.1016/j.corsci.2016.02.012

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title = "Slow positron beam study of corrosion behavior of AM60B magnesium alloy in NaCl solution",

abstract = "The corrosion behavior of super vacuum die-cast AM60B magnesium alloys immersed in a 5 wt% NaCl solution was investigated by slow positron beam technique, XRD, XPS, SEM and potentiodynamic polarization tests. The XRD and XPS results indicated that Mg(OH)2 was main corrosion product in the salt solution. With prolonging the immersion time, a significant decrease of Doppler-broadened annihilation line-width parameter near the surface after corrosion was observed and interpreted that the pre-existing interfacial voids between oxide film and matrix might promote the formation of Mg(OH)2 corrosion layer. Polarization tests found that Mg(OH)2 could provide a temporary protection.",

keywords = "A. Magnesium, B. SEM, B. XRD",

author = "W. Yang and Zhu, {Z. J.} and Wang, {J. J.} and Wu, {Y. C.} and T. Zhai and Song, {G. L.}",

note = "Publisher Copyright: {\textcopyright} 2016 Elsevier Ltd.",

year = "2016",

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doi = "10.1016/j.corsci.2016.02.012",

language = "English",

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T1 - Slow positron beam study of corrosion behavior of AM60B magnesium alloy in NaCl solution

AU - Yang, W.

AU - Zhu, Z. J.

AU - Wang, J. J.

AU - Wu, Y. C.

AU - Zhai, T.

AU - Song, G. L.

PY - 2016/5/1

Y1 - 2016/5/1

N2 - The corrosion behavior of super vacuum die-cast AM60B magnesium alloys immersed in a 5 wt% NaCl solution was investigated by slow positron beam technique, XRD, XPS, SEM and potentiodynamic polarization tests. The XRD and XPS results indicated that Mg(OH)2 was main corrosion product in the salt solution. With prolonging the immersion time, a significant decrease of Doppler-broadened annihilation line-width parameter near the surface after corrosion was observed and interpreted that the pre-existing interfacial voids between oxide film and matrix might promote the formation of Mg(OH)2 corrosion layer. Polarization tests found that Mg(OH)2 could provide a temporary protection.

AB - The corrosion behavior of super vacuum die-cast AM60B magnesium alloys immersed in a 5 wt% NaCl solution was investigated by slow positron beam technique, XRD, XPS, SEM and potentiodynamic polarization tests. The XRD and XPS results indicated that Mg(OH)2 was main corrosion product in the salt solution. With prolonging the immersion time, a significant decrease of Doppler-broadened annihilation line-width parameter near the surface after corrosion was observed and interpreted that the pre-existing interfacial voids between oxide film and matrix might promote the formation of Mg(OH)2 corrosion layer. Polarization tests found that Mg(OH)2 could provide a temporary protection.

KW - A. Magnesium

KW - B. SEM

KW - B. XRD

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DO - 10.1016/j.corsci.2016.02.012

M3 - Article

AN - SCOPUS:85017401927

SN - 0010-938X

VL - 106

SP - 271

EP - 280

JO - Corrosion Science

JF - Corrosion Science

ER -

Slow positron beam study of corrosion behavior of AM60B magnesium alloy in NaCl solution

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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