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Comparative Study of Synroc-C Ceramics Produced by Hot-Pressing and Inductive Melting

Published online by Cambridge University Press:  03 September 2012

I. A. Sobolev ,
S. V. Stefanovsky ,
B. I. Omelianenko ,
S. V. Ioudintsev ,
E. R. Vance  and
A. Jostsons
I. A. Sobolev
Affiliation:
SIA “Radon”, 7th Rostovskii per., 2/14, Moscow 119121, Russia
S. V. Stefanovsky
Affiliation:
SIA “Radon”, 7th Rostovskii per., 2/14, Moscow 119121, Russia
B. I. Omelianenko
Affiliation:
Institute of Geology of Ore Deposits, Staromonetnii per., 35, Moscow 109017Russia
S. V. Ioudintsev
Affiliation:
Institute of Geology of Ore Deposits, Staromonetnii per., 35, Moscow 109017Russia
E. R. Vance
Affiliation:
ANSTO, New Illawarra Rd, Lucas Heights NSW 2234 PMB 1 Menai, NSW, Australia
A. Jostsons
Affiliation:
ANSTO, New Illawarra Rd, Lucas Heights NSW 2234 PMB 1 Menai, NSW, Australia
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Abstract

Three Synroc-C samples, containing simulated high level waste were studied. One was produced by the conventional hot-pressing method at ANSTO, Australia, and the others were obtained using cold crucible technology at Radon, Russia. One of the melted samples was prepared using the Australian sol-gel precursor and the second one was obtained from an oxide-nitrate mixture. It was established that the specimens have closely similar mineral compositions, with major hollandite, perovskite, zirconolite, and rutile. Small amounts of hibonite were also found. Unlike the hot-pressed Synroc containing metallic alloy particles, melted Synrocs contain molybdates. An investigation of mineral compositions and elemental distribution in the samples was carried out. Features of hot-pressed and melted ceramics were compared. Unit cell parameters of the Synroc phases were determined and preliminary results on durability of the melted Synroc are presented.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 465: Symposium II – Scienfific Basis for Nuclear Waste Management XX , 1996 , 371
Copyright
Copyright © Materials Research Society 1997

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References

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