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Title: Methods for manufacturing porous nuclear fuel elements for high-temperature gas-cooled nuclear reactors

Methods for manufacturing porous nuclear fuel elements for use in advanced high temperature gas-cooled nuclear reactors (HTGR's). Advanced uranium bi-carbide, uranium tri-carbide and uranium carbonitride nuclear fuels can be used. These fuels have high melting temperatures, high thermal conductivity, and high resistance to erosion by hot hydrogen gas. Tri-carbide fuels, such as (U,Zr,Nb)C, can be fabricated using chemical vapor infiltration (CVI) to simultaneously deposit each of the three separate carbides, e.g., UC, ZrC, and NbC in a single CVI step. By using CVI, a thin coating of nuclear fuel may be deposited inside of a highly porous skeletal structure made, for example, of reticulated vitreous carbon foam.
Authors:
 [1] ;  [2] ;  [3]
  1. Albuquerque, NM
  2. Pocoima, CA
  3. Pacoima, CA
Publication Date:
OSTI Identifier:
978847
Report Number(s):
7,666,463
US patent application 11/435,412
DOE Contract Number:
AC04-94AL85000
Resource Type:
Patent
Research Org:
Sandia National Laboratories (SNL-NM), Albuquerque, NM
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS