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Title: Coated U3Si2 pellets with enhanced water and steam oxidation resistance

Abstract

A method of forming a water resistant boundary on a fissile material for use in a water cooled nuclear reactor is described. The method comprises coating the fissile material, such as a pellet of U3Si2 and/or the grain boundaries, to a desired thickness with a suitable coating material, such as atomic layer deposition or a thermal spray process. The coating material may be any non-reactive material with a solubility at least as low as that of UO2. Exemplary coating materials include ZrSiO4, FeCrAl, Cr, Zr, Al—Cr, CrAl, ZrO2, CeO2, TiO2, SiO2, UO2, ZrB2, Na2O—B2O3—SiO2—Al2O3 glass, Al2O3, Cr2O3, carbon, and SiC, and combinations thereof. The water resistant layer may be overlayed with a burnable absorber layer, such as ZrB2 or B2O3—SiO2 glass.

Inventors:
; ;
Issue Date:
Research Org.:
Westinghouse Electric Co., LLC, Cranberry Township, PA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1771507
Patent Number(s):
10803999
Application Number:
15/898,308
Assignee:
Westinghouse Electric Company LLC (Cranberry Township, PA)
Patent Classifications (CPCs):
C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01B - NON-METALLIC ELEMENTS
C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01P - INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
DOE Contract Number:  
NE0008222
Resource Type:
Patent
Resource Relation:
Patent File Date: 02/16/2018
Country of Publication:
United States
Language:
English
Subject:
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; 36 MATERIALS SCIENCE

Citation Formats

Lahoda, Edward J., Xu, Peng, and Cai, Lu. Coated U3Si2 pellets with enhanced water and steam oxidation resistance. United States: N. p., 2020. Web.
Lahoda, Edward J., Xu, Peng, & Cai, Lu. Coated U3Si2 pellets with enhanced water and steam oxidation resistance. United States.
Lahoda, Edward J., Xu, Peng, and Cai, Lu. Tue . "Coated U3Si2 pellets with enhanced water and steam oxidation resistance". United States. https://www.osti.gov/servlets/purl/1771507.
@article{osti_1771507,
title = {Coated U3Si2 pellets with enhanced water and steam oxidation resistance},
author = {Lahoda, Edward J. and Xu, Peng and Cai, Lu},
abstractNote = {A method of forming a water resistant boundary on a fissile material for use in a water cooled nuclear reactor is described. The method comprises coating the fissile material, such as a pellet of U3Si2 and/or the grain boundaries, to a desired thickness with a suitable coating material, such as atomic layer deposition or a thermal spray process. The coating material may be any non-reactive material with a solubility at least as low as that of UO2. Exemplary coating materials include ZrSiO4, FeCrAl, Cr, Zr, Al—Cr, CrAl, ZrO2, CeO2, TiO2, SiO2, UO2, ZrB2, Na2O—B2O3—SiO2—Al2O3 glass, Al2O3, Cr2O3, carbon, and SiC, and combinations thereof. The water resistant layer may be overlayed with a burnable absorber layer, such as ZrB2 or B2O3—SiO2 glass.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2020},
month = {10}
}

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