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Title: Localized corrosion of low-carbon steel at the nanoscale

Abstract

Mitigating corrosion remains a daunting challenge due to localized, nanoscale corrosion events that are poorly understood but are known to cause unpredictable variations in material longevity. Here, the most recent advances in liquid-cell transmission electron microscopy were employed to capture the advent of localized aqueous corrosion in carbon steel at the nanoscale and in real time. Localized corrosion initiated at a triple junction formed by a solitary cementite grain and two ferrite grains and then continued at the electrochemically-active boundary between these two phases. With this analysis, we identified facetted pitting at the phase boundary, uniform corrosion rates from the steel surface, and data that suggest that a re-initiating galvanic corrosion mechanism is possible in this environment. These observations represent an important step toward atomically defining nanoscale corrosion mechanisms, enabling the informed development of next-generation inhibition technologies and the improvement of corrosion predictive models.

Authors:
 [1];  [2]; ORCiD logo [1]; ORCiD logo [3];  [2];  [4];  [1];  [5];  [2]; ORCiD logo [1];  [6];  [1];  [2]
  1. Aramco Services Company, Boston, MA (United States). Aramco Research Center
  2. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States). Center for Integrated Nanotechnologies
  3. Idaho National Lab. (INL), Idaho Falls, ID (United States). Nuclear Materials Dept.
  4. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States). Materials Characterization and Performance
  5. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States). Energetics Characterization
  6. Aramco Research & Development, Dhahran (Saudi Arabia)
Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC)
OSTI Identifier:
1507746
Report Number(s):
SAND2019-1799J
Journal ID: ISSN 2397-2106; 672696
Grant/Contract Number:  
NA0003525; AC52-06NA25396
Resource Type:
Accepted Manuscript
Journal Name:
npj Materials Degradation
Additional Journal Information:
Journal Volume: 3; Journal ID: ISSN 2397-2106
Publisher:
Springer
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; characterization and analytical techniques; corrosion; metals and alloys; structural properties; transmission electron microscopy

Citation Formats

Hayden, Steven C., Chisholm, Claire, Grudt, Rachael O., Aguiar, Jeffery A., Mook, William M., Kotula, Paul G., Pilyugina, Tatiana S., Bufford, Daniel C., Hattar, Khalid, Kucharski, Timothy J., Taie, Ihsan M., Ostraat, Michele L., and Jungjohann, Katherine L. Localized corrosion of low-carbon steel at the nanoscale. United States: N. p., 2019. Web. doi:10.1038/s41529-019-0078-1.
Hayden, Steven C., Chisholm, Claire, Grudt, Rachael O., Aguiar, Jeffery A., Mook, William M., Kotula, Paul G., Pilyugina, Tatiana S., Bufford, Daniel C., Hattar, Khalid, Kucharski, Timothy J., Taie, Ihsan M., Ostraat, Michele L., & Jungjohann, Katherine L. Localized corrosion of low-carbon steel at the nanoscale. United States. doi:10.1038/s41529-019-0078-1.
Hayden, Steven C., Chisholm, Claire, Grudt, Rachael O., Aguiar, Jeffery A., Mook, William M., Kotula, Paul G., Pilyugina, Tatiana S., Bufford, Daniel C., Hattar, Khalid, Kucharski, Timothy J., Taie, Ihsan M., Ostraat, Michele L., and Jungjohann, Katherine L. Fri . "Localized corrosion of low-carbon steel at the nanoscale". United States. doi:10.1038/s41529-019-0078-1. https://www.osti.gov/servlets/purl/1507746.
@article{osti_1507746,
title = {Localized corrosion of low-carbon steel at the nanoscale},
author = {Hayden, Steven C. and Chisholm, Claire and Grudt, Rachael O. and Aguiar, Jeffery A. and Mook, William M. and Kotula, Paul G. and Pilyugina, Tatiana S. and Bufford, Daniel C. and Hattar, Khalid and Kucharski, Timothy J. and Taie, Ihsan M. and Ostraat, Michele L. and Jungjohann, Katherine L.},
abstractNote = {Mitigating corrosion remains a daunting challenge due to localized, nanoscale corrosion events that are poorly understood but are known to cause unpredictable variations in material longevity. Here, the most recent advances in liquid-cell transmission electron microscopy were employed to capture the advent of localized aqueous corrosion in carbon steel at the nanoscale and in real time. Localized corrosion initiated at a triple junction formed by a solitary cementite grain and two ferrite grains and then continued at the electrochemically-active boundary between these two phases. With this analysis, we identified facetted pitting at the phase boundary, uniform corrosion rates from the steel surface, and data that suggest that a re-initiating galvanic corrosion mechanism is possible in this environment. These observations represent an important step toward atomically defining nanoscale corrosion mechanisms, enabling the informed development of next-generation inhibition technologies and the improvement of corrosion predictive models.},
doi = {10.1038/s41529-019-0078-1},
journal = {npj Materials Degradation},
number = ,
volume = 3,
place = {United States},
year = {2019},
month = {4}
}

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