K. Minato et al., DETERIORATION OF ZRC-COATED FUEL PARTICLE CAUSED BY FAILURE OF PYROLYTIC CARBON LAYER, Journal of nuclear materials, 252(1-2), 1998, pp. 13-21
Citations number
22
Categorie Soggetti
Nuclear Sciences & Tecnology","Mining & Mineral Processing","Material Science
The ZrC coating layer is a candidate to replace the SiC coating layer
of the Triso-coated fuel particles for high-temperature gas-cooled rea
ctors. To understand the behavior of the ZrC-Triso-coated fuel particl
es at 1800 to 2000 degrees C, a ceramographic examination and an elect
ron probe microanalysis were performed on the ZrC-Triso-coated fuel pa
rticles after the post-irradiation heating tests and a thermodynamic a
nalysis of the Zr-C-U-O system was carried out. Based on the results o
f the examination and analyses, a mechanism of the deterioration of th
e ZrC-Triso-coated fuel particles was proposed. The deterioration of t
he ZrC-Triso-coated fuel particles observed at 1800 to 2000 degrees C
was caused by the failure of the inner pyrolytic carbon layer. (C) 199
8 Elsevier Science B.V.