Low Temperature Sintering of Si3N4 Ceramics and its Applicability as an Inert Matrix of the Transuranium Elements for Transmutation of Minor Actinides

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For the transmutation of the very long half-lived isotopes which are separated from the spent nuclear fuels, it is necessary to find proper inert matrices these are stable under heavy neutron irradiation at high temperature. Silicon nitride ceramics is a candidate since it is very tolerant for heavy neutron irradiation and keeps relatively high thermal conductivity. For these reasons, we try to sinter Si3N4 ceramics containing large amounts of CeO2 as a simulant for Am2O3, a typical transuranium element. The low-temperature pressureless-sintering behavior of the ceramics and chemical and thermal properties of the obtained sintered bodies are reported.

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Edited by:

Katsutoshi Komeya, Yi-Bing Cheng, Junichi Tatami and Mamoru Mitomo

Pages:

23-26

DOI:

10.4028/www.scientific.net/KEM.403.23

Citation:

T. Yano et al., "Low Temperature Sintering of Si3N4 Ceramics and its Applicability as an Inert Matrix of the Transuranium Elements for Transmutation of Minor Actinides", Key Engineering Materials, Vol. 403, pp. 23-26, 2009

Online since:

December 2008

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$38.00

[1] Japan Atomic Industrial Forum, Inc., �uclear Power Plants in the World 2006, (2007).

[2] Hj. Matzke, V. V. Rondinella and T. Wiss, J. Nucl. Mater., Vol. 274 (1999), p.47.

[3] M. Akiyoshi, T. Yano and M. L. Jenkins, Philos. Mag. A, Vol. 81, (2001) p.683.

[4] M. Akiyoshi, N. Akasaka, Y. Tachi and T. Yano, J. Ceram. Soc. Jpn. Supplement, Vol. 112 (2004) p. S1490.

[5] M. Akiyoshi, K. Ichikawa, T. Donomae and T. Yano, J. Nucl. Mater. Vol 307-311, (2002) p.1305.

[6] T. Yano, M. Akiyoshi, K. Ichikawa, Y. Tachi and T. Iseki, J. Nucl. Mater., Vol. 289, (2001) p.102.

[7] M. Akiyoshi, T. Yano, Y. Tachi and H. Nakano, J. Nucl. Mater., Vol. 367-370 (2007) p.1023.

[8] V. G. Samsonov, Handbook of High-Temperature Materials �o. 2, Prenum Press, New York (1964).

[9] T. Wasanapiarnpong, S. Wada, M. Imai and T. Yano, J. Ceram. Soc. Japan, Vol. 114 (2006) p.733.

[10] B. Motovic, G. Rixecker, and F. Aldinger, J. Am. Ceram. Soc., Vol. 87 (2004) p.546.

[11] S. Hampshire and K. H. Jack, Special Ceramics, Vol. 7 (1981) p.37.

[12] P. E. Raison and R. G. Haire, Prog. Nucl. Energy, Vol. 38 (2001) pp.251-1 µm a) b) Fig. 4 Microstructure of specimens sintered at (a) 1450oC and (b) 1650oC for 4 h.

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