skip to main content

Title: In Situ Synthesis of Uranium Carbide and its High Temperature Cubic Phase

New in situ data for the U-C system are presented, with the goal of improving knowledge of the phase diagram to enable production of new ceramic fuels. The none quenchable, cubic, δ-phase, which in turn is fundamental to computational methods, was identified. Rich datasets of the formation synthesis of uranium carbide yield kinetics data which allow the benchmarking of modeling, thermodynamic parameters etc. The order-disorder transition (carbon sublattice melting) was observed due to equal sensitivity of neutrons to both elements. This dynamic has not been accurately described in some recent simulation-based publications.
Authors:
 [1] ;  [1]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Publication Date:
OSTI Identifier:
1177171
Report Number(s):
LA-UR--15-22196
TRN: US1600122
DOE Contract Number:
AC52-06NA25396
Resource Type:
Conference
Resource Relation:
Conference: TMS annual meeting, Orlando, FL (United States), 16 Mar 2015
Research Org:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org:
DOE/LANL
Country of Publication:
United States
Language:
English
Subject:
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; 36 MATERIALS SCIENCE; URANIUM CARBIDES; TEMPERATURE RANGE 1000-4000 K; SYNTHESIS; PHASE DIAGRAMS; CARBON; ORDER-DISORDER TRANSFORMATIONS; MELTING; SIMULATION; BENCHMARKS; CERAMICS; NUCLEAR FUELS; NEUTRON DIFFRACTION Material Science; carbothermic reduction, cubic delta phase