Skip to main content Accessibility help
×
Home

Growth of Surface Layer During the Leaching of The Simulated Waste Glass and its Barrier Effects on the Leaching

  • K. Ishiguro (a1), N. Kawanishi (a1), N. Sasaki (a1), H. Nagaki (a1) and M. Yamamoto (a1)...

Abstract

The growth of surface layers on simulated waste glass during two different types of leaching has been studied in conjunction with their corrosion kinetics. Static and Soxhlet leach tests were performed in distilled water at a temperature of 100°C. Auger and ESCA analyses of solid samples after leaching showed that the layers consisted of two or three sublayers which were distinguished by their different components. The transition elements Fe and Ni, the rare-earths Nd and La, and Zn were concentrated in the layers, while Si, B and alkali were depleted in most of the layers. Growth kinetics of the layers followed approximately linear relations for the two types of leaching. Growth rates and elemental profiles of the layers depended upon the leaching conditions. Comparison between the leaching rate and the thickness of the layer showed that layers did not work as effective diffusion barriers until a threshold thickness was reached, which depended on the layer structures.

Copyright

Corresponding author

* Present address; Toshiba Corporation, Isogo-ku, Yokohama 235; Japan.

References

Hide All
1. Houser, C., Tsong, I. S. T. and White, W. B., Scientific Basis for Nuclear Waste Management Vol.1 (Plenum Press, N.Y. & London 1979 ) pp. 131139.
2. Hench, L. L., Clark, D. E. and Yen-Bower, E. L., Nuclear Chemical Waste Management 1, 59 (1980).
3. McVay, G. L. and Pederson, L. R., Scientific Basis for Nuclear Waste Management Vol.3 (Plenum Press, N.Y. & London 1981 ) pp. 323328.
4. Veal, B. W., Paulikas, D. J. and Karim, D. P., Nuclear Technol. 51, 136 (1980).
5. Shade, J. W., Nuclear and Chemical Waste Management, 2, 219 (1981).
6. Igarashi, H. et al. , PNC T831-81–01.
7. Barkatt, A., Simmons, J. H. and Macedo, P. B., J. Phys. Chem. Glasses, 22, 73 (1981).

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed