Filters
Results 1 - 1 of 1
Results 1 - 1 of 1.
Search took: 0.108 seconds
AbstractAbstract
[en] As usually fabricated by cold pressing and sintering, europia has a monoclinic crystal structure which is subject to in-reactor swelling. The low temperature, cubic modification is believed to have better dimensional stability under irradiation. To fabricate dense cubic europia it is necessary to work below the transformation temperature and hot-pressing is the only feasible process. The effects of pressure, time, and temperature on both densification and on the phase transformation have been examined. The transformation temperature is reduced under pressure, and this restricts the range of working temperatures. This effect is not offset by the fairly strongly reducing atmosphere under which hot-pressing was carried out. Nevertheless densities greater than 90% theoretical can be obtained in reasonable time (approximately 30 min) without detectable contamination by the cubic phase. The densification rate varies in a complex way with pressure and this is tentatively ascribed to the effect of grain growth occurring during hot-pressing, on the rate. (author)
Primary Subject
Source
Mar 1979; 17 p; Modern ceramic technologies. 14. International meeting; St. Vincent, Italy; 28 - 31 May 1979
Record Type
Report
Literature Type
Conference
Report Number
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue