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Title: Dry Bag Isostatic Pressing for Improved Green Strength of Nuclear Fuel Pellets

Abstract

Dry bag isostatic pressing is proposed for mass production of nuclear fuel pellets. Dry bag isostatically pressed rods of a fuel surrogate (95% CeO2-5% HfO2) 200 mm long by 8 mm diameter were cut into pellets using a wire saw. Four different binder and two different CeO2 powder sources were investigated. The strength of the isostatically pressed pellets for all binder systems measured by diametral compression was about 50% higher than pellets produced by uniaxial dry pressing at the same pressure. It was proposed that the less uniform density of uniaxially pressed pellets accounted for the lower strength. The strength of pellets containing CeO2 powder with significantly higher moisture content was five times higher than pellets containing CeO2 powder with a low moisture content. Capillary pressure of the moisture was thought to supply the added binding strength.

Authors:
; ; ; ;
Publication Date:
Research Org.:
Idaho National Lab. (INL), Idaho Falls, ID (United States)
Sponsoring Org.:
DOE - NE
OSTI Identifier:
992258
Report Number(s):
INL/JOU-09-17331
Journal ID: ISSN 0022-3115; TRN: US1007712
DOE Contract Number:  
DE-AC07-05ID14517
Resource Type:
Journal Article
Journal Name:
Journal of Nuclear Materials
Additional Journal Information:
Journal Volume: 406; Journal Issue: 2; Journal ID: ISSN 0022-3115
Country of Publication:
United States
Language:
English
Subject:
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; AVAILABILITY; BINDERS; COMPRESSION; MOISTURE; NUCLEAR FUELS; PELLETS; PRESSING; PRODUCTION; diametral compression test; dry bag isostatic press; green strength; nuclear fuel pellets

Citation Formats

Egeland, G W, Zuck, L D, Cannon, W R, Lessing, P A, and Medvedev, P G. Dry Bag Isostatic Pressing for Improved Green Strength of Nuclear Fuel Pellets. United States: N. p., 2010. Web. doi:10.1016/j.jnucmat.2010.08.022.
Egeland, G W, Zuck, L D, Cannon, W R, Lessing, P A, & Medvedev, P G. Dry Bag Isostatic Pressing for Improved Green Strength of Nuclear Fuel Pellets. United States. https://doi.org/10.1016/j.jnucmat.2010.08.022
Egeland, G W, Zuck, L D, Cannon, W R, Lessing, P A, and Medvedev, P G. 2010. "Dry Bag Isostatic Pressing for Improved Green Strength of Nuclear Fuel Pellets". United States. https://doi.org/10.1016/j.jnucmat.2010.08.022.
@article{osti_992258,
title = {Dry Bag Isostatic Pressing for Improved Green Strength of Nuclear Fuel Pellets},
author = {Egeland, G W and Zuck, L D and Cannon, W R and Lessing, P A and Medvedev, P G},
abstractNote = {Dry bag isostatic pressing is proposed for mass production of nuclear fuel pellets. Dry bag isostatically pressed rods of a fuel surrogate (95% CeO2-5% HfO2) 200 mm long by 8 mm diameter were cut into pellets using a wire saw. Four different binder and two different CeO2 powder sources were investigated. The strength of the isostatically pressed pellets for all binder systems measured by diametral compression was about 50% higher than pellets produced by uniaxial dry pressing at the same pressure. It was proposed that the less uniform density of uniaxially pressed pellets accounted for the lower strength. The strength of pellets containing CeO2 powder with significantly higher moisture content was five times higher than pellets containing CeO2 powder with a low moisture content. Capillary pressure of the moisture was thought to supply the added binding strength.},
doi = {10.1016/j.jnucmat.2010.08.022},
url = {https://www.osti.gov/biblio/992258}, journal = {Journal of Nuclear Materials},
issn = {0022-3115},
number = 2,
volume = 406,
place = {United States},
year = {2010},
month = {11}
}