Fission product palladium-silicon carbide interaction in htgr fuel particles

1990 ◽  
Vol 172 (2) ◽  
pp. 184-196 ◽  
Author(s):  
Kazuo Minato ◽  
Toru Ogawa ◽  
Satoru Kashimura ◽  
Kousaku Fukuda ◽  
Michio Shimizu ◽  
...  
Keyword(s):  
Silicon Carbide ◽  
Fission Product ◽  
Fuel Particles ◽  
Htgr Fuel

Irradiation behavior of pyrolytic silicon carbide

1983 ◽  
Vol 41 ◽  
pp. 72-73
Author(s):  
R. J. Lauf
Keyword(s):  
Silicon Carbide ◽  
Fission Products ◽  
Thermodynamics And Kinetics ◽  
Neutron Fluences ◽  
Fuel Particles ◽  
Sic Coatings ◽  
Irradiation Behavior ◽  
Kinetics Of ◽  
Htgr Fuel

Fuel particles for the High-Temperature Gas-Cooled Reactor (HTGR) contain a layer of pyrolytic silicon carbide to act as a miniature pressure vessel and primary fission product barrier. Optimization of the SiC with respect to fuel performance involves four areas of study: (a) characterization of as-deposited SiC coatings; (b) thermodynamics and kinetics of chemical reactions between SiC and fission products; (c) irradiation behavior of SiC in the absence of fission products; and (d) combined effects of irradiation and fission products. This paper reports the behavior of SiC deposited on inert microspheres and irradiated to fast neutron fluences typical of HTGR fuel at end-of-life.

Carbon monoxide-silicon carbide interaction in HTGR fuel particles

1991 ◽  
Vol 26 (9) ◽  
pp. 2379-2388 ◽  
Author(s):  
Kazuo Minato ◽  
Toru Ogawa ◽  
Satoru Kashimura ◽  
Kousaku Fukuda ◽  
Ishio Takahashi ◽  
...  
Keyword(s):  
Carbon Monoxide ◽  
Silicon Carbide ◽  
Fuel Particles ◽  
Htgr Fuel

scholarly journals Irradiation performance of pyrolytic silicon carbide coatings on fissile fuel particles

1984 ◽  
Vol 42 ◽  
pp. 418-419
Author(s):  
R. J. Lauf
Keyword(s):  
Silicon Carbide ◽  
Fission Product ◽  
Fission Products ◽  
Carbide Coatings ◽  
Fuel Particles ◽  
Irradiation Performance ◽  
Sic Coatings ◽  
Irradiation Behavior ◽  
Kinetics Of

Fuel particles for the High Temperature Gas-Cooled Reactor (HTGR) contain a layer of pyrolytic silicon carbide to act as a miniature pressure vessel and primary fission product barrier. Optimization of the SiC coating with respect to fuel performance involves four areas of study: (a) characterization of as-deposited SiC coatings; (b) thermodynamics and kinetics of chemical reactions between SiC and fission products; (c) irradiation behavior of SiC in the absence of fission products; and (d) the combined effects of irradiation and fission product interactions. This paper reports the behavior of SiC deposited on fissile fuel particles and irradiated to fast neutron fluences typical of HTGR fuel at end-of-life.

scholarly journals Interaction of Noble Metal Fission Products with Pyrolytic Silicon Carbide

1982 ◽  
Vol 40 ◽  
pp. 566-567
Author(s):  
R. J. Lauf ◽  
D. N. Braski
Keyword(s):  
Silicon Carbide ◽  
Fission Product ◽  
Noble Metals ◽  
Fission Products ◽  
Pyrolytic Carbon ◽  
Enriched Uranium ◽  
Fuel Particles ◽  
The Many ◽  
Sic Coatings ◽  
Palladium Group

Fuel particles for the High-Temperature Gas-Cooled Reactor (HTGR) contain layers of pyrolytic carbon and silicon carbide, which act as a miniature pressure vessel and form the primary fission product barrier. Of the many fission products formed during irradiation, the noble metals are of particular interest because they interact significantly with the SiC layer and their concentrations are somewhat higher in the low-enriched uranium fuels currently under consideration. To study fission product-SiC interactions, particles of UO2 or UC2 are doped with fission product elements before coating and are then held in a thermal gradient up to several thousand hours. Examination of the SiC coatings by TEM-AEM after annealing shows that silver behaves differently from the palladium group.

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