Densification behaviour and sintering kinetics Of PuO2 pellets

被引：26
作者：
Kutty, TRG
Khan, KB
Hegde, PV
Sengupta, AK
Majumdar, S
Purushotham, DSC
机构：
[1] Bhabha Atom Res Ctr, Radiomet Div, Bombay 400085, Maharashtra, India
[2] Bhabha Atom Res Ctr, Nucl Fuels Grp, Bombay 400085, Maharashtra, India
来源：
JOURNAL OF NUCLEAR MATERIALS | 2001年 / 297卷 / 02期
关键词：
D O I：
10.1016/S0022-3115(01)00614-6
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The sintering behaviour of PuO2 pellets has been studied using a dilatometer in inert, reducing and oxidising atmospheres. The shrinkage rate was found to be maximum for pellets sintered in Ar-8%, H-2 atmosphere. The mechanism for the initial stage of sintering was determined using rate controlled sintering (RCS) technique and was found to be volume diffusion for both inert and reducing atmospheres. The activation energy for the initial stages of sintering was found to be 210 and 159 kJ/mol for Ar and Ar-8% H-2 atmospheres, respectively. The mechanism for the sintering in oxidising atmospheres could not be evaluated using RCS technique. (C) 2001 Elsevier Science B.V. All rights reserved.
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页码：120 / 128
页数：9
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