skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Effects of surface initial condition on aqueous corrosion of glass-A study with a model nuclear waste glass

Abstract

Being a nonequilibrium material, the structure of glass varies with the sample history. Thus, the initial surface condition of a glass can vary with the preparation condition and have a large impact on its reactivity. This paper shows that the aqueous corrosion behavior of international simple glass (ISG) varies depending on the initial surface state. The ISG glass samples were prepared as‐polished‐only and polished‐then‐annealed and they were immersed in aqueous solution saturated with soluble SiO2 at 30°C (modeling a mild condition) and at 90°C (modeling a severe condition). Molecular dynamics simulations were performed to obtain coordination numbers of network formers of ISG to assist oxygen speciation calculations. The surface structures of as‐prepared and corroded ISG samples were analyzed using various imaging and spectroscopic techniques. Among these analyses, only the oxygen speciation with x‐ray photoelectron spectroscopy showed discernable differences between two uncorroded surfaces with different preparation histories; all other methods could not differentiate the surface preparation history before aqueous corrosion. Such minor difference in chemical structures was found to have a profound impact on corrosion behaviors in the mild condition. In the harsh condition, the surface history dependence was not as drastic as the corrosion in the mild condition. The analysismore » results of the corroded surfaces suggested that the thickness and structure of the alteration layer formed on ISG in aqueous corrosion can vary with the initial surface state.« less

Authors:
 [1];  [1];  [2]; ORCiD logo [2]; ORCiD logo [1]
  1. Department of Chemical Engineering, The Pennsylvania State University, University Park Pennsylvania; Materials Research Institute, The Pennsylvania State University, University Park Pennsylvania
  2. Department of Materials Science and Engineering, University of North Texas, Denton Texas
Publication Date:
Research Org.:
Energy Frontier Research Centers (EFRC) (United States). Center for Performance and Design of Nuclear Waste Forms and Containers (WastePD); The Ohio State Univ., Columbus, OH (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1566707
DOE Contract Number:  
SC0016584
Resource Type:
Journal Article
Journal Name:
Journal of the American Ceramic Society
Additional Journal Information:
Journal Volume: 102; Journal Issue: 4; Journal ID: ISSN 0002-7820
Publisher:
American Ceramic Society
Country of Publication:
United States
Language:
English
Subject:
nuclear, defects, corrosion

Citation Formats

Liu, Hongshen, Ngo, Dien, Ren, Mengguo, Du, Jincheng, and Kim, Seong H. Effects of surface initial condition on aqueous corrosion of glass-A study with a model nuclear waste glass. United States: N. p., 2018. Web. doi:10.1111/jace.16016.
Liu, Hongshen, Ngo, Dien, Ren, Mengguo, Du, Jincheng, & Kim, Seong H. Effects of surface initial condition on aqueous corrosion of glass-A study with a model nuclear waste glass. United States. doi:10.1111/jace.16016.
Liu, Hongshen, Ngo, Dien, Ren, Mengguo, Du, Jincheng, and Kim, Seong H. Tue . "Effects of surface initial condition on aqueous corrosion of glass-A study with a model nuclear waste glass". United States. doi:10.1111/jace.16016.
@article{osti_1566707,
title = {Effects of surface initial condition on aqueous corrosion of glass-A study with a model nuclear waste glass},
author = {Liu, Hongshen and Ngo, Dien and Ren, Mengguo and Du, Jincheng and Kim, Seong H.},
abstractNote = {Being a nonequilibrium material, the structure of glass varies with the sample history. Thus, the initial surface condition of a glass can vary with the preparation condition and have a large impact on its reactivity. This paper shows that the aqueous corrosion behavior of international simple glass (ISG) varies depending on the initial surface state. The ISG glass samples were prepared as‐polished‐only and polished‐then‐annealed and they were immersed in aqueous solution saturated with soluble SiO2 at 30°C (modeling a mild condition) and at 90°C (modeling a severe condition). Molecular dynamics simulations were performed to obtain coordination numbers of network formers of ISG to assist oxygen speciation calculations. The surface structures of as‐prepared and corroded ISG samples were analyzed using various imaging and spectroscopic techniques. Among these analyses, only the oxygen speciation with x‐ray photoelectron spectroscopy showed discernable differences between two uncorroded surfaces with different preparation histories; all other methods could not differentiate the surface preparation history before aqueous corrosion. Such minor difference in chemical structures was found to have a profound impact on corrosion behaviors in the mild condition. In the harsh condition, the surface history dependence was not as drastic as the corrosion in the mild condition. The analysis results of the corroded surfaces suggested that the thickness and structure of the alteration layer formed on ISG in aqueous corrosion can vary with the initial surface state.},
doi = {10.1111/jace.16016},
journal = {Journal of the American Ceramic Society},
issn = {0002-7820},
number = 4,
volume = 102,
place = {United States},
year = {2018},
month = {9}
}

Works referenced in this record:

DL_POLY_2.0: A general-purpose parallel molecular dynamics simulation package
journal, June 1996