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Ceramics International, Volume 39, Issue 8, December 2013, Pages 9351-9359.
Ambarish Dey, Amit Das Gupta, Debrata Basu, Ritu D. Ambashta, Piaray Kishan Wattal, Sanjiv Kumar, Debasis Sen, S. Mazumder.
Bio-Ceramics and Coating Division, Central Glass and Ceramic Research Institute, Kolkata 700032, India
Process Development Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
NCCCM/BARC, ECIL Post, Hyderabad 500062, India
Solid State Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
Abstract
Sodium zirconium phosphate and calcium zirconium phosphate, two potential radioactive wasteforms, were treated with fluoride, and different methods of sintering were evaluated. Different compositions were prepared by adding calcium fluoride to sodium zirconium phosphate and sodium fluoride to calcium zirconium phosphate. These mixtures were calcined in a microwave furnace and then sintered. The increase in densification of the samples sintered in a hot isostatic press were observed to be nearly uniform, while other samples that were sintered in a microwave and in a resistance furnace were inhomogeneous. The concentration of inhomogeneities was higher in fluorinated samples prepared under closed conditions in a hot press than samples prepared under microwave conditions in air.
