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Title: A U-bearing composite waste form for electrochemical processing wastes

Abstract

Metallic/ceramic composite waste forms are being developed to immobilize combined metallic and oxide waste streams generated during electrochemical recycling of used nuclear fuel. Composites were made for corrosion testing by reacting HT9 steel to represent fuel cladding, Zr and Mo to simulate metallic fuel waste, and a mixture of ZrO2, Nd2O3, and UO2 to represent oxide wastes. More than half of the added UO2 was reduced to metal and formed Fe-Zr-U intermetallics and most of the remaining UO2 and all of the Nd2O3 reacted to form zirconates. Fe-Cr-Mo intermetallics were also formed. Microstructure characterization of the intermetallic and ceramic phases that were generated and tests conducted to evaluate their corrosion behaviors indicate composite waste forms can accommodate both metallic and oxidized waste streams in durable host phases. (c) 2018 Elsevier B.V. All rights reserved.

Authors:
ORCiD logo; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Nuclear Energy - Nuclear Energy University Programs (NEUP)
OSTI Identifier:
1432369
DOE Contract Number:
AC02-06CH11357
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Nuclear Materials; Journal Volume: 501; Journal Issue: C
Country of Publication:
United States
Language:
English

Citation Formats

Chen, X., Ebert, W. L., and Indacochea, J. E. A U-bearing composite waste form for electrochemical processing wastes. United States: N. p., 2018. Web. doi:10.1016/j.jnucmat.2018.01.051.
Chen, X., Ebert, W. L., & Indacochea, J. E. A U-bearing composite waste form for electrochemical processing wastes. United States. doi:10.1016/j.jnucmat.2018.01.051.
Chen, X., Ebert, W. L., and Indacochea, J. E. Sun . "A U-bearing composite waste form for electrochemical processing wastes". United States. doi:10.1016/j.jnucmat.2018.01.051.
@article{osti_1432369,
title = {A U-bearing composite waste form for electrochemical processing wastes},
author = {Chen, X. and Ebert, W. L. and Indacochea, J. E.},
abstractNote = {Metallic/ceramic composite waste forms are being developed to immobilize combined metallic and oxide waste streams generated during electrochemical recycling of used nuclear fuel. Composites were made for corrosion testing by reacting HT9 steel to represent fuel cladding, Zr and Mo to simulate metallic fuel waste, and a mixture of ZrO2, Nd2O3, and UO2 to represent oxide wastes. More than half of the added UO2 was reduced to metal and formed Fe-Zr-U intermetallics and most of the remaining UO2 and all of the Nd2O3 reacted to form zirconates. Fe-Cr-Mo intermetallics were also formed. Microstructure characterization of the intermetallic and ceramic phases that were generated and tests conducted to evaluate their corrosion behaviors indicate composite waste forms can accommodate both metallic and oxidized waste streams in durable host phases. (c) 2018 Elsevier B.V. All rights reserved.},
doi = {10.1016/j.jnucmat.2018.01.051},
journal = {Journal of Nuclear Materials},
number = C,
volume = 501,
place = {United States},
year = {Sun Apr 01 00:00:00 EDT 2018},
month = {Sun Apr 01 00:00:00 EDT 2018}
}