Hostname: page-component-745bb68f8f-mzp66 Total loading time: 0 Render date: 2025-01-29T00:14:11.467Z Has data issue: false hasContentIssue false
  • English
  • Français

Al2O3-Doped TiO2 Ceramic Waste Forms Produced by Melting Method

Published online by Cambridge University Press:  10 February 2011

Masayoshi Uno ,
Hajime Kinoshita  and
Shinsuke Yamanaka
Masayoshi Uno
Affiliation:
Department of Nuclear Engineering, Osaka University, Yamada-oka 2-1, Suita, Osaka 565-0871JAPAN
Hajime Kinoshita
Affiliation:
Department of Nuclear Engineering, Osaka University, Yamada-oka 2-1, Suita, Osaka 565-0871JAPAN
Shinsuke Yamanaka
Affiliation:
Department of Nuclear Engineering, Osaka University, Yamada-oka 2-1, Suita, Osaka 565-0871JAPAN
Get access

Abstract

We studied the phase stability and melting temperature of alumina-doped alkaline earth and rare earth -Ti-O system with the composition variation. Melting of the mixture of Nd2O3, CeO2, SrO, TiO2 and A12O3 at 1673 K in 1 hour produced RE2Ti3O9 phase, and the chemical formula of the oxide was assumed to be (Ce,Nd,Sr)2(Ti,Al)3O9. A Differential Scanning Calorimetry (DSC) measurement showed that the melting temperature of this compound was 1646 K. Al and Sr was considered to contribute to the reduced melting temperature of the oxides in the system. The hardness comparing with ceramic wastes and the leach rate superior to glass waste forms were confirmed

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 608: Symposium QQ – Scientific Basis for Nuclear Waste Management XXIII , 1999 , 443
Copyright
Copyright © Materials Research Society 2000

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1 Materials Characterization Center, 9-30-81.Google Scholar
2 Roth, R. S., Dennis, J. R. and McMuride, H. F., Phase Diagrams for Ceramists, vol. 3 (American Ceramic Society, 1975).Google Scholar
3 Lenov, A. I. et al. Bull. Acad. Sci.,5, 756 (1966).Google Scholar
4 Richard, M. et al. , J. Solid State Chem., 112, 345 (1994).Google Scholar
5 Radioactive Waste Forms for the Future, edited by Lutze, W. and Ewing, R. C. (Elsevier Science Publishing, New York, 1988).Google Scholar
6 Kawamura, K. and Ohuchi, J., Mat. Res. Soc. Proc. 353, pp87–93(1995).Google Scholar
7 Begg, B. D., Vance, E. R., Day, R. A., Hambley, M. and Conradson, S. D., Mat. Res. Soc. Proc. 465, pp325–332(1997).Google Scholar
8 Begg, B. D. and Vance, E. R., Mat. Res. Soc. Proc. 465, pp333–340(1997).Google Scholar
9 Stefannovsky, S. V., Yudintsev, S. V., Nikonov, B. S., Omelianenko, B. I., Gorshokov, A. I., Sivtsov, A. V., Lapina, M. I. and Ewing, R. C., Mat. Res. Soc. Proc., 556, pp27–33(1999).Google Scholar
10 Stefanovsky, S. V., Yudintsev, S. V., Nikonov, B. S., Omelianenko, B. I., and Ptashkin, A. G., Mat. Res. Soc. Proc., 556, pp121–128(1999).Google Scholar
11 Soblev, I. A., Stefanovsky, S. V., Omelianenko, B. I., Ioudintsev, S. V., Vance, E. R., Jostsons, A., Mat. Res. Soc. Proc., 465, pp 371–378.Google Scholar
12 Kudrin, A. V., Nikonov, B. S. and Stefavovsky, S. V.. Mat. Res. Soc. Proc., 465, pp 417–423(1997).Google Scholar
13 Soblev, I. A., Stefanovsky, S. V., Ioudintsev, S. V., Nikonov, B. S., Omelianenko, B. I. and Mokhov, A. V., Mat. Res. Soc. Proc., 465, pp363–370(1999).Google Scholar
14 Smelova, T. M., Krylova, N. V., Shestoperov, I. N., Mat. Res. Soc. Proc., 465, pp 425–431(1997).Google Scholar
15 Stefanovsky, S. V., Yudintsev, S. V., Nikonov, B. S., Omelianenko, B. I., Ptaskin, A. G., Mat. Res. Soc. Proc., 556, pp121–128(1999).Google Scholar