Production of CO during burnup of (Th, U)O2 kerneled HTR fuel particles

Proksch, E.; Strigl, A.; Nabielek, H.

doi:10.1016/0022-3115(85)90039-x

Cited by 9 publications

(4 citation statements)

References 6 publications

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“…In the PANAMA code, the CO formation process followed the experimental law found by Proksch et al [25]; the validity of the former law for the NpPuAmO 1.7 fuel is a topic open for further studies. The theoretical law describing the CO formation proposed by General Atomics [19] neglects the irradiation temperature and therefore has not been considered in the present studies.…”

Section: Calculation Of the Failure Fractionmentioning

confidence: 97%

Prediction of TRISO coated particle performances for a one-pass deep burn

Talamo

2008

Journal of Nuclear Materials

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Section: Calculation Of the Failure Fractionmentioning

confidence: 97%

Prediction of TRISO coated particle performances for a one-pass deep burn

Talamo

2008

Journal of Nuclear Materials

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“…In order to clarify the mechanism of the palladium attack of alpha silicon carbide that can be used as nuclear fuel cladding, thermodynamic analysis on the SiC-Pd system was carried out and the thermodynamic stability of palladium silicides was compared to that of SiO 2 (s) and SiO [20].…”

Section: Discussionmentioning

confidence: 99%

Palladium interaction with silicon carbide

Gentile

Xiao

Abram

2015

Journal of Nuclear Materials

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a b s t r a c tIn this work the palladium interaction with silicon carbide is investigated by means of complementary analytical techniques such as thermogravimetry (TG), differential scanning calorimetry (DSC), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS).Thermoscans were carried out on pellets of palladium, a-SiC and b-SiC high purity powders in the temperature range comprised between 293 K and 1773 K, in order to study the effect of temperature on the palladium-silicon carbide reaction.Thermoscans of a-SiC pellets containing 5 at.%Pd show that during differential calorimetry scans three exothermic peaks occurred at 773 K, 1144 K and 1615 K, while thermoscans of b-SiC pellets containing 3 at.%Pd and 5 at.%Pd do not show peaks. For the pellet a-SiC-5 at.%Pd XRD spectra reveal that the first peak is associated with the formation of Pd 3 Si and SiO 2 phases, while the second peak and the third peak are correlated with the formation of Pd 2 Si phase and the active oxidation of silicon carbide respectively. Thermogravimetry scans show weight gain and weight loss peaks due to the SiO 2 phase formation and the active oxidation. Additionally XPS fittings reveal the development of SiC x O y phase during the first exothermic peak up to the temperature of 873 K. The experimental data reveals that alpha silicon carbide is attacked by palladium at lower temperatures than beta silicon carbide and the reaction mechanism between silicon carbide and palladium is strongly affected by silicon carbide oxidation.

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“…From the two oxygen atoms which are released per fission, about 1.4 atoms are tied up by rare earth fission product, the remaining oxygen reacts with carbon to produce CO. The empirical relationship for the number of oxygen atoms per fission, O/F, under irradiation conditions is given by the equation (Proksh et al, 1982):…”

Section: Uo 2 Kernelmentioning

confidence: 99%