URANIUM DIOXIDE OXIDATION WITH FORMING INTERMEDIATE PHASES (in German)
Journal Article
·
· Kernenergie (East Germany)
OSTI ID:4077362
An experimental study was made of the UO/sub 2/ to U/sub 3/O/sub 8/ oxidation process. At low temperatures, depending on the activity of the powder, the oxidation of UO/sub 2/ yield a U/sub 3/O/sub 7/ shell around the UO/sub 2/ grain (160 to 220 deg C). Further oxidation is determined by the diffusion of oxygen through this shell and yields U/sub 5/O/sub 12/ (280 to 290 deg C). Their follows U/sub 5/O/sub (375 to 400 deg C) and finally U/sub 3/O/sub 8/ as more oxigen is absorbed. No further increase of the oxygen content occurs up to 800 deg C. The exothermal effects established through differential thermal analysis may be due to lattice transformation. (OTS)
- Research Organization:
- Zentralinstitut fur Kernforschung, Bereich Werkstoffe und Festkorper, Rossendorf, Ger.
- NSA Number:
- NSA-18-016037
- OSTI ID:
- 4077362
- Journal Information:
- Kernenergie (East Germany), Journal Name: Kernenergie (East Germany) Vol. Vol: 7; ISSN KERNA
- Country of Publication:
- Country unknown/Code not available
- Language:
- German
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