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Title: Porous nuclear fuel element for high-temperature gas-cooled nuclear reactors

Porous nuclear fuel elements for use in advanced high temperature gas-cooled nuclear reactors (HTGR's), and to processes for fabricating them. 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, the nuclear fuel may be deposited inside of a highly porous skeletal structure made of, for example, reticulated vitreous carbon foam.
Inventors:
 [1];  [2];  [2]
  1. Albuquerque, NM
  2. Pacoima, CA
Issue Date:
OSTI Identifier:
1016551
Assignee:
Sandia Corporation (Albuquerque, NM) SSO
Patent Number(s):
7,899,146
Application Number:
US Patent Application 7,899,146
Contract Number:
AC04-94AL85000
Research Org:
Sandia Corporation (Albuquerque, NM)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS