Simulated fission product oxide behavior in Triso-coated HTGR fuel
- 1 August 1979
- report
- Published by Office of Scientific and Technical Information (OSTI)
Abstract
Several combinations of Trisco-coated UO/sub 2/ particles with additions of simulated fission product oxides were investigated. They were first heat-treated in the laboratory; then their behavior was examined by metallography, radiography, the scanning electron microscope, and electron microprobe x-ray analysis. Pressures of the various gaseous species within the particles were calculated and displayed as Ellingham diagrams. It appears to be essential that Triso-coated fuel have impermeable inner high-density pyrocarbon (iLTI) layers, because the fission product strontium, in gaseous form, will interact with SiC. As oxides, the rare earth fission products redistributed slightly within the buffer layer but did not interact with the SiC layers.Keywords
This publication has 0 references indexed in Scilit: