Characterization of Localized Filament Corrosion Products at the Anodic Head on a Model Mg-Zn-Zr Alloy Surface

Rossouw, David; Fu, Dong; Leonard, Donovan N.; Brady, Michael P.; Botton, Gianluigi A.; Kish, Joseph R.

doi:10.5006/2268

Title: Characterization of Localized Filament Corrosion Products at the Anodic Head on a Model Mg-Zn-Zr Alloy Surface

Abstract

In this study, localized filament corrosion products at the anodic head on a model Mg-1%Zn-0.4%Zr alloy surface were characterized by electron microscopy techniques of site-specific lamella prepared by focused ion beam milling. It is revealed that the anodic head propagates underneath a largely intact thin and dense MgO surface film and comprises dense aggregates of nano-crystalline MgO within a nano-porous Mg(OH)₂ network. In conclusion, the findings contribute new supportive direct imaging insight into the source of the enhanced H₂ evolution that accompanies anodic dissolution of Mg and its alloys.

Authors:

Rossouw, David ^[1]; Fu, Dong ^[1]; Leonard, Donovan N. ^[2]; Brady, Michael P. ^[2]; Botton, Gianluigi A. ^[1]; Kish, Joseph R. ^[1]

McMaster University, Hamilton, ON (Canada). Department of Materials Science and Engineering
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science and Technology Division

Publication Date:: Wed Feb 15 00:00:00 EST 2017

Research Org.:: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Sponsoring Org.:: USDOE Office of Energy Efficiency and Renewable Energy (EERE)

OSTI Identifier:: 1358000

Grant/Contract Number:: AC05-00OR22725

Resource Type:: Accepted Manuscript

Journal Name:: Corrosion

Additional Journal Information:: Journal Volume: 73; Journal Issue: 5; Journal ID: ISSN 0010-9312

Publisher:: NACE International

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE; corrosion; filaments; magnesium alloy; transmission electron microscopy

Citation Formats


                    Rossouw, David, Fu, Dong, Leonard, Donovan N., Brady, Michael P., Botton, Gianluigi A., and Kish, Joseph R. Characterization of Localized Filament Corrosion Products at the Anodic Head on a Model Mg-Zn-Zr Alloy Surface.  United States: N. p., 2017. 
Web.  doi:10.5006/2268.

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                    Rossouw, David, Fu, Dong, Leonard, Donovan N., Brady, Michael P., Botton, Gianluigi A., & Kish, Joseph R. Characterization of Localized Filament Corrosion Products at the Anodic Head on a Model Mg-Zn-Zr Alloy Surface.  United States.  https://doi.org/10.5006/2268

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                    Rossouw, David, Fu, Dong, Leonard, Donovan N., Brady, Michael P., Botton, Gianluigi A., and Kish, Joseph R. Wed .  
"Characterization of Localized Filament Corrosion Products at the Anodic Head on a Model Mg-Zn-Zr Alloy Surface".  United States.  https://doi.org/10.5006/2268.  https://www.osti.gov/servlets/purl/1358000.

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@article{osti_1358000,

  title        = {Characterization of Localized Filament Corrosion Products at the Anodic Head on a Model Mg-Zn-Zr Alloy Surface},

  author       = {Rossouw, David and Fu, Dong and Leonard, Donovan N. and Brady, Michael P. and Botton, Gianluigi A. and Kish, Joseph R.},

  abstractNote = {In this study, localized filament corrosion products at the anodic head on a model Mg-1%Zn-0.4%Zr alloy surface were characterized by electron microscopy techniques of site-specific lamella prepared by focused ion beam milling. It is revealed that the anodic head propagates underneath a largely intact thin and dense MgO surface film and comprises dense aggregates of nano-crystalline MgO within a nano-porous Mg(OH)2 network. In conclusion, the findings contribute new supportive direct imaging insight into the source of the enhanced H2 evolution that accompanies anodic dissolution of Mg and its alloys.},

  doi          = {10.5006/2268},

  journal      = {Corrosion},

  number       = 5,

  volume       = 73,

  place        = {United States},

  year         = {Wed Feb 15 00:00:00 EST 2017},

  month        = {Wed Feb 15 00:00:00 EST 2017}

}

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Works referencing / citing this record:

Application of 2D Pit Growth Method to Mg Thin Films: Part I. Initiation, Growth and Repassivation
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Gabbardo, Aline D.; Frankel, G. S.
Journal of The Electrochemical Society, Vol. 166, Issue 11
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Application of 2D Pit Growth Method to Mg Thin Films: Part II. Salt Film and Hydrogen Evolution
journal, January 2019

Gabbardo, Aline D.; Viswanathan, G.; Frankel, G. S.
Journal of The Electrochemical Society, Vol. 166, Issue 11
DOI: 10.1149/2.0351911jes

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Title: Characterization of Localized Filament Corrosion Products at the Anodic Head on a Model Mg-Zn-Zr Alloy Surface

Abstract

Citation Formats

Application of 2D Pit Growth Method to Mg Thin Films: Part I. Initiation, Growth and Repassivation journal, January 2019

Application of 2D Pit Growth Method to Mg Thin Films: Part II. Salt Film and Hydrogen Evolution journal, January 2019

Application of 2D Pit Growth Method to Mg Thin Films: Part I. Initiation, Growth and Repassivation
journal, January 2019

Application of 2D Pit Growth Method to Mg Thin Films: Part II. Salt Film and Hydrogen Evolution
journal, January 2019