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Title: Mn-doped oxide nuclear fuel

Abstract

A nuclear fuel includes uranium(IV) oxide (UO2) and manganese (Mn) as a dopant. The Mn dopant may be present in the fuel in an amount up to the solubility limit for Mn under a given set of conditions, for example, about 0.01 wt % to about 1 wt %. The nuclear fuel is substantially free of aluminum (Al). The nuclear fuel exhibits enhanced grain size development during sintering temperatures as low at 1400 K due to an increase in uranium sub-lattice vacancies induced by dissolution of the Mn dopant at interstitial defect sites. The Mn-doped nuclear fuel exhibits improved grain sizes at lower temperatures compared to Cr-, Al-, and undoped UO2, and therefore desirably exhibits lower fission gas release and higher plasticity, reducing the chances of fuel rod failure.

Inventors:
; ;
Issue Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1771664
Patent Number(s):
10847271
Application Number:
16/101,808
Assignee:
Triad National Security, LLC (Los Alamos, NM)
Patent Classifications (CPCs):
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
C - CHEMISTRY C04 - CEMENTS C04B - LIME, MAGNESIA
DOE Contract Number:  
AC52-06NA25396
Resource Type:
Patent
Resource Relation:
Patent File Date: 08/13/2018
Country of Publication:
United States
Language:
English

Citation Formats

Cooper, Michael William Donald, Andersson, Anders David Ragnar, and Stanek, Christopher Richard. Mn-doped oxide nuclear fuel. United States: N. p., 2020. Web.
Cooper, Michael William Donald, Andersson, Anders David Ragnar, & Stanek, Christopher Richard. Mn-doped oxide nuclear fuel. United States.
Cooper, Michael William Donald, Andersson, Anders David Ragnar, and Stanek, Christopher Richard. Tue . "Mn-doped oxide nuclear fuel". United States. https://www.osti.gov/servlets/purl/1771664.
@article{osti_1771664,
title = {Mn-doped oxide nuclear fuel},
author = {Cooper, Michael William Donald and Andersson, Anders David Ragnar and Stanek, Christopher Richard},
abstractNote = {A nuclear fuel includes uranium(IV) oxide (UO2) and manganese (Mn) as a dopant. The Mn dopant may be present in the fuel in an amount up to the solubility limit for Mn under a given set of conditions, for example, about 0.01 wt % to about 1 wt %. The nuclear fuel is substantially free of aluminum (Al). The nuclear fuel exhibits enhanced grain size development during sintering temperatures as low at 1400 K due to an increase in uranium sub-lattice vacancies induced by dissolution of the Mn dopant at interstitial defect sites. The Mn-doped nuclear fuel exhibits improved grain sizes at lower temperatures compared to Cr-, Al-, and undoped UO2, and therefore desirably exhibits lower fission gas release and higher plasticity, reducing the chances of fuel rod failure.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2020},
month = {11}
}

Works referenced in this record:

Advanced Doped UO 2 Pellets in LWR Applications
journal, September 2006


Factors governing microstructure development of Cr2O3-doped UO2 during sintering
journal, September 2001


Method of producing low density oxide fuel pellet
patent, July 1984


The role of dopant charge state on defect chemistry and grain growth of doped UO2
journal, May 2018


Thermodynamics of chromium in UO2 fuel: A solubility model
journal, April 2014