skip to main content

DOE PAGESDOE PAGES

This content will become publicly available on January 17, 2019

Title: U 3Si 2 behavior in H 2O: Part I, flowing steam and the effect of hydrogen

Recent interest in U 3Si 2 as an advanced light water reactor fuel has driven assessment of numerous properties, but characterization of its response to H 2O environments is absent from the literature. The behavior of U 3Si 2 in H 2O containing atmospheres is investigated and presented in a two-part series of articles aimed to understand the degradation mechanism of U 3Si 2 in H 2O. Reported here are thermogravimetric data for U 3Si 2 exposed to flowing steam at 250–470 °C. Additionally the response of U 3Si 2 to flowing Ar-6% H 2 from 350 to 400 °C is presented. Microstructural degradation is observed following hours of exposure at 350 °C in steam. U 3Si 2 undergoes pulverization on the timescale of minutes when temperatures are increased above 400 °C. In conclusion, this mechanism is accelerated in flowing Ar-H 2 at the same temperatures.
Authors:
 [1] ;  [2] ;  [2] ; ORCiD logo [2]
  1. The Univ. of Texas at San Antonio, San Antonio, TX (United States); Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Publication Date:
Report Number(s):
LA-UR-17-30039
Journal ID: ISSN 0022-3115
Grant/Contract Number:
AC52-06NA25396
Type:
Accepted Manuscript
Journal Name:
Journal of Nuclear Materials
Additional Journal Information:
Journal Volume: 501; Journal ID: ISSN 0022-3115
Publisher:
Elsevier
Research Org:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org:
USDOE Office of Nuclear Energy (NE)
Country of Publication:
United States
Language:
English
Subject:
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; Material Science
OSTI Identifier:
1417827

Wood, Elizabeth Sooby, White, Joshua Taylor, Grote, Christopher John, and Nelson, Andrew Thomas. U3Si2 behavior in H2O: Part I, flowing steam and the effect of hydrogen. United States: N. p., Web. doi:10.1016/j.jnucmat.2018.01.002.
Wood, Elizabeth Sooby, White, Joshua Taylor, Grote, Christopher John, & Nelson, Andrew Thomas. U3Si2 behavior in H2O: Part I, flowing steam and the effect of hydrogen. United States. doi:10.1016/j.jnucmat.2018.01.002.
Wood, Elizabeth Sooby, White, Joshua Taylor, Grote, Christopher John, and Nelson, Andrew Thomas. 2018. "U3Si2 behavior in H2O: Part I, flowing steam and the effect of hydrogen". United States. doi:10.1016/j.jnucmat.2018.01.002.
@article{osti_1417827,
title = {U3Si2 behavior in H2O: Part I, flowing steam and the effect of hydrogen},
author = {Wood, Elizabeth Sooby and White, Joshua Taylor and Grote, Christopher John and Nelson, Andrew Thomas},
abstractNote = {Recent interest in U3Si2 as an advanced light water reactor fuel has driven assessment of numerous properties, but characterization of its response to H2O environments is absent from the literature. The behavior of U3Si2 in H2O containing atmospheres is investigated and presented in a two-part series of articles aimed to understand the degradation mechanism of U3Si2 in H2O. Reported here are thermogravimetric data for U3Si2 exposed to flowing steam at 250–470 °C. Additionally the response of U3Si2 to flowing Ar-6% H2 from 350 to 400 °C is presented. Microstructural degradation is observed following hours of exposure at 350 °C in steam. U3Si2 undergoes pulverization on the timescale of minutes when temperatures are increased above 400 °C. In conclusion, this mechanism is accelerated in flowing Ar-H2 at the same temperatures.},
doi = {10.1016/j.jnucmat.2018.01.002},
journal = {Journal of Nuclear Materials},
number = ,
volume = 501,
place = {United States},
year = {2018},
month = {1}
}