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Title: Grain boundary enhanced UN and U3Si2 pellets with improved 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 mixing a powdered fissile material selected from the group consisting of UN and U3Si2 with an additive selected from oxidation resistant materials having a melting or softening point lower than the sintering temperature of the fissile material, pressing the mixed fissile and additive materials into a pellet, sintering the pellet to a temperature greater than the melting point of the additive. Alternatively, if the melting point of the oxidation resistant particles is greater than the sintering temperature of UN or U3Si2, then the oxidation resistant particles can have a particle size distribution less than that of the UN or U3Si2.

Inventors:
; ; ; ; ;
Issue Date:
Research Org.:
Westinghouse Electric Company LLC, Cranberry Township, PA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1987019
Patent Number(s):
11551822
Application Number:
17/473,433
Assignee:
Westinghouse Electric Company LLC (Cranberry Township, PA)
DOE Contract Number:  
NE0008222
Resource Type:
Patent
Resource Relation:
Patent File Date: 09/13/2021
Country of Publication:
United States
Language:
English

Citation Formats

Lahoda, Edward J., Xu, Peng, Oelrich, Jr., Robert L., Shah, Hemant, Wright, Jonathan, and Cai, Lu. Grain boundary enhanced UN and U3Si2 pellets with improved oxidation resistance. United States: N. p., 2023. Web.
Lahoda, Edward J., Xu, Peng, Oelrich, Jr., Robert L., Shah, Hemant, Wright, Jonathan, & Cai, Lu. Grain boundary enhanced UN and U3Si2 pellets with improved oxidation resistance. United States.
Lahoda, Edward J., Xu, Peng, Oelrich, Jr., Robert L., Shah, Hemant, Wright, Jonathan, and Cai, Lu. Tue . "Grain boundary enhanced UN and U3Si2 pellets with improved oxidation resistance". United States. https://www.osti.gov/servlets/purl/1987019.
@article{osti_1987019,
title = {Grain boundary enhanced UN and U3Si2 pellets with improved oxidation resistance},
author = {Lahoda, Edward J. and Xu, Peng and Oelrich, Jr., Robert L. and Shah, Hemant and Wright, Jonathan 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 mixing a powdered fissile material selected from the group consisting of UN and U3Si2 with an additive selected from oxidation resistant materials having a melting or softening point lower than the sintering temperature of the fissile material, pressing the mixed fissile and additive materials into a pellet, sintering the pellet to a temperature greater than the melting point of the additive. Alternatively, if the melting point of the oxidation resistant particles is greater than the sintering temperature of UN or U3Si2, then the oxidation resistant particles can have a particle size distribution less than that of the UN or U3Si2.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2023},
month = {1}
}

Works referenced in this record:

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Grain Boundary Enhanced UN and U₃Si₂ Pellets with Improved Oxidation Resistance
patent-application, August 2019


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