THERMAL EXPANSION OF URANIUM DIOXIDE. Final Report
The thermal expansions of commercial uranium dioxide specimens were measured up to the melting point. The linear expansion of dense, normal grain size UO/sub 2/ follows closely the equationi L = L/sub 0/(1 + 6.0 x 10/sup -6/t + 2.0 x 10/sup -9/t/sup 1.7 x 10/sup -12/t/sup 3/). An anomalous expansion was noted in the temperature range 1000 to 1500 deg C. Above 2500 deg C the rapid vaporization and crystal growth of UO/sub 2/ necessitate the application of heating techniques which provide rapid heating and quenching in order to obtain reliable data. The use of solar and arcmelting furnaces for this type of measurement is described. (auth)
- Research Organization:
- Stanford Research Inst., Menlo Park, Calif.
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-14-012941
- OSTI ID:
- 4169437
- Report Number(s):
- TID-5722; SU-2542
- Country of Publication:
- United States
- Language:
- English
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