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Title: Localized Corrosion Behavior of Type 304SS with a Silica Layer Under Atmospheric Corrosion Environments

Abstract

The U.S. Department of Energy (DOE) has proposed a potential repository for spent nuclear fuel and high-level radioactive waste at the Yucca Mountain site in Nevada. [I] The temperature could be high on the waste packages, and it is possible that dripping water or humidity could interact with rock dust particulate to form a thin electrolyte layer with concentrated ionic species. Under these conditions, it is possible that highly corrosion-resistant alloys (CRAs) used as packages to dispose the nuclear waste could suffer localized corrosion. Therefore, to better understand long-term corrosion performance of CRAs in the repository, it is important to investigate localized corrosion under a simulated repository environment. We measured open circuit potential (OCP) and galvanic current (i{sub g}) for silica-coated Type 304SS during drying of salt solutions under controlled RH environments to clarify the effect of silica layer as a dust layer simulant on localized corrosion under atmospheric environments. Type 304SS was used as a relatively susceptible model CRA instead of the much more corrosion resistant alloys, such as Alloy 22, that are being considered as, waste package materials.

Authors:
;
Publication Date:
Research Org.:
Yucca Mountain Project, Las Vegas, Nevada
Sponsoring Org.:
USDOE
OSTI Identifier:
893925
Report Number(s):
NA
MOL.20060705.0068, DC# 47393; TRN: US0700074
DOE Contract Number:  
NA
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
12 MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; 11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; 36 MATERIALS SCIENCE; ALLOYS; CORROSION; CORROSION RESISTANT ALLOYS; DRYING; DUSTS; ELECTROLYTES; HIGH-LEVEL RADIOACTIVE WASTES; HUMIDITY; NUCLEAR FUELS; PARTICULATES; RADIOACTIVE WASTES; SILICA; WASTES; WATER; YUCCA MOUNTAIN

Citation Formats

E. Tada, and G.S. Frankel. Localized Corrosion Behavior of Type 304SS with a Silica Layer Under Atmospheric Corrosion Environments. United States: N. p., 2006. Web. doi:10.2172/893925.
E. Tada, & G.S. Frankel. Localized Corrosion Behavior of Type 304SS with a Silica Layer Under Atmospheric Corrosion Environments. United States. doi:10.2172/893925.
E. Tada, and G.S. Frankel. Mon . "Localized Corrosion Behavior of Type 304SS with a Silica Layer Under Atmospheric Corrosion Environments". United States. doi:10.2172/893925. https://www.osti.gov/servlets/purl/893925.
@article{osti_893925,
title = {Localized Corrosion Behavior of Type 304SS with a Silica Layer Under Atmospheric Corrosion Environments},
author = {E. Tada and G.S. Frankel},
abstractNote = {The U.S. Department of Energy (DOE) has proposed a potential repository for spent nuclear fuel and high-level radioactive waste at the Yucca Mountain site in Nevada. [I] The temperature could be high on the waste packages, and it is possible that dripping water or humidity could interact with rock dust particulate to form a thin electrolyte layer with concentrated ionic species. Under these conditions, it is possible that highly corrosion-resistant alloys (CRAs) used as packages to dispose the nuclear waste could suffer localized corrosion. Therefore, to better understand long-term corrosion performance of CRAs in the repository, it is important to investigate localized corrosion under a simulated repository environment. We measured open circuit potential (OCP) and galvanic current (i{sub g}) for silica-coated Type 304SS during drying of salt solutions under controlled RH environments to clarify the effect of silica layer as a dust layer simulant on localized corrosion under atmospheric environments. Type 304SS was used as a relatively susceptible model CRA instead of the much more corrosion resistant alloys, such as Alloy 22, that are being considered as, waste package materials.},
doi = {10.2172/893925},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Mar 13 00:00:00 EST 2006},
month = {Mon Mar 13 00:00:00 EST 2006}
}

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