OXIDATION BEHAVIOR OF UNIRRADIATED UO2 PELLETS

被引：33
作者：
BAE, KK
KIM, BG
LEE, YW
YANG, MS
PARK, HS
机构：
来源：
JOURNAL OF NUCLEAR MATERIALS | 1994年 / 209卷 / 03期
关键词：
D O I：
10.1016/0022-3115(94)90263-1
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
UO2 pellets were oxidised and pulverized to powder due to the volume change resulting from phase transformation of UO2 to the intermediate phases and finally U3O8. The spallation mechanism of UO2 pellets at 400-degrees-C was examined in this study. Transformation of UO2 to intermediate phases was concluded to be the main driving force for the pulverization. During the formation of intermediate phases at 400-degrees-C, intergranular cracks were extensively developed, and these cracks caused the spallation. The formation of U3O8 only accelerated the pulverization. The characteristics of oxidised powder were also examined.
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页码：274 / 279
页数：6
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