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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 H 2 evolution that accompanies anodic dissolution of Mg and its alloys.

Authors:
 [1];  [1];  [2];  [2];  [1];  [1]
  1. McMaster University, Hamilton, ON (Canada). Department of Materials Science and Engineering
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science and Technology Division
Publication Date:
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:
Journal Article: 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.
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. doi:10.5006/2268.
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. doi:10.5006/2268. https://www.osti.gov/servlets/purl/1358000.
@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}
}

Journal Article:
Free Publicly Available Full Text
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