Thermodynamic treatment of noble metal fission products in nuclear fuel

Kaye, M.H.; Lewis, Brent J.; Thompson, W. T.

doi:10.1016/j.jnucmat.2006.11.014

Cited by 56 publications

(25 citation statements)

References 38 publications

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“…The composition of the alloys observed in the irradiated light water reactor (LWR) fuel was reported to be Mo, 24-25% Tc, 8% Ru, 44-52% Rh, 7-8% Pd, 8-16% [2]. The thermodynamic and thermophysical properties of the alloys with the above-described composition have been previously reported [16][17][18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 85%

Effect of Mo content on thermal and mechanical properties of Mo–Ru–Rh–Pd alloys

Masahira

Ohishi

Kurosaki

et al. 2015

Journal of Nuclear Materials

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Section: Introductionmentioning

confidence: 85%

Effect of Mo content on thermal and mechanical properties of Mo–Ru–Rh–Pd alloys

Masahira

Ohishi

Kurosaki

et al. 2015

Journal of Nuclear Materials

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“…は Pd-Rh- を用いて 1,100- 46) and Sugawawa et al 36) Chemical composition of the system is shown in the Table 1 Solid curves, case 1; Dashed curves, case 2; Dotted curves, case 3. …”

Section: )mentioning

confidence: 99%

Estimation of Redox Condition of Simulated High-level Waste Glass Based on the Chemical Composition of Crystalline Phases of Platinum-group Elements

Sugawara

Ohira

Komamine³

et al. 2016

Transactions of the Atomic Energy Society of Japan

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The redox condition of simulated high-level waste (HLW) glass was investigated by thermodynamic calculations for the phase equilibrium of crystalline phases composed of platinum group elements (PGE, Pd, Rh, and Ru) based on the thermodynamic data for Pd-Rh-Ru and (Ru,Rh) O 2 solid solutions. Phase equilibrium calculation indicates that the stability field of the Pd-rich metal phase with an FCC structure and the (Ru,Rh) O 2 phase is nearly independent of the relative abundances of Pd, Rh, and Ru. Thermodynamic calculation for rhodium partitioning between Pd-Rh-Ru and (Ru,Rh) O 2 can provide the temperature and oxygen fugacity conditions under which these phases are stable. The redox condition of HLW glasses retrieved from a full-scale mock-up melter (KMOC) in JAEA, Tokai, Japan, was evaluated by comparing the results of chemical composition analysis for PGE crystalline phases in the glasses with those of phase equilibrium and/or thermodynamic calculations. The obtained results suggest that the oxygen fugacity is higher than the atmospheric condition (f O2 ＞0.21) for the glass retrieved in a normal melter operation, while it is lower at 10 -1.5 -10 -2.0 for the PGE-rich residual glass retrieved from the melter after glass draining. The calculated f O2 values are consistent with the redox condition estimated from Ce 3＋ /Ce 4＋ ratios of KMOC glasses reported previously.

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“…Those with 3+ and 4+ possible valences were aggregated as ceria (either Ce 2 O 3 or CeO 2Àx after Zinkevich et al [5]), and the remaining solely 3+ valence rare earths aggregated as La 2 O 3 . Typically seen in oxide fuel is the white or five metal alloy phase containing ruthenium, rhodium, molybdenum, palladium, and technicium, and the various structures of the metal phase were represented by the models of Kaye et al [6]. Although the fuel represents a TRISO particle, for this example no carbon was included in the system.…”

Section: Triso Fuel Phase Equilibria and Thermochemistrymentioning

confidence: 99%