AN INVESTIGATION OF SOME PHYSICAL PROPERTIES OF SINTERED UO$sub 2$ BODIES AS A FUNCTION OF BeO ADDITIONS (in German)
The thermal conductivity and thermal expansion of sintered UO/sub 2/-- BeO bodies was studied by determining the specific surface of the sample powders (by the BET method) and the ratio of O/U (by the oxidation method) and investigating their sintering behavior. The UO/sub 2/ specimens with cold pressing and subsequent sintering in a H atmosphere at 1550 and 1600 deg C. Their density was 95.0 plus or minus 0.4% of the theoretical. The thermal conductivity was found in a cylindrical apparatus by determining, up to 1000 deg C, the heat supplied and the radial heat flow. The mean relative error DELTA lambda / lambda was plus or minus 8%. The thermal conductivity of mixed bodies increased with increasing BeO content. Mixed bodies with a BeO content of 20 vol% had a thermal conductivity twice as high as that of pure UO/sub 2/. The thermal expansion of the specimens was determined up to 1100 deg C in a vertical apparatus with an accuracy of plus or minus 0.2 x 10/sup -6/ (cm/cm/ deg C). No relation between thermal expansion and BeO content could be found. Finally, the structure of some specimens was studied by x ray. (auth)
- Research Organization:
- Battelle-Institut e.V., Frankfurt am Main
- NSA Number:
- NSA-17-032585
- OSTI ID:
- 4690710
- Journal Information:
- Ber. Deut. Keram. Ges., Journal Name: Ber. Deut. Keram. Ges. Vol. Vol: 40
- Country of Publication:
- Country unknown/Code not available
- Language:
- German
Similar Records
STUDY ON THE FABRICATION OF THE BeO-UO$sub 2$ SINTERED BODY BY MEANS OF VACUUM HOT PRESSING
SINTERABILITY STUDIES OF BeO COMPACTS