Chemical Stability of Simiulated HLW Forms in Contact With Clay Media


The corrosion stability of six simulated HLW forms proposed by several European countries (five borosilicate glasses and one borosilicate glass ceramic) in contact with different media relating to the clay disposal has been investigated for periods up to 80 days and at a surface area to solution volume ratio of 1 cm−1 under non de-aerated conditions. In the reference medium distilled water the corrosion stabilities are largely determined by saturation effects for elements such as Si, Ca, Mg, Sr, Fe and U. Si saturation is found to be enhanced by a large Al2O3 concentration in the glass. In the clay-water mixture these saturation effects are much less predominant. Wet clay attacks the waste forms faster than the clay-water mixture, although the corrosion rates tend to decrease with time in both clay media. In general, no simple Arrhenius-type temnnerature dependence for the corrosion behaviour is found for the interval between 40 and 200°C.

This is a preview of subscription content, access via your institution.


  1. 1.

    J.A.C. Marples et al. “Testing and evaluation of the properties of various potential materials for inmobilising high activity waste”, EUR 7138 EN (1981).

  2. 2.

    P. Van Iseghem et al. “Interaction of vitrified high level waste with clay environment”, Proc. International Seminar on Chemistry and Process Engineering for High-Level Liquid Waste Solidification, Jülich (F.R. Germany), June 1981, in press.

  3. 3.

    D.E. Clark et al. “Corrosion of glass”, Books for Industry (New York), 1979

    Google Scholar 

  4. 4.

    L.L. Hench et al. “Physical Chemistry of glass surfaces”, J. non Cryst. Sol. 28 (1978), 83–105

    CAS  Article  Google Scholar 

  5. 5.

    R.K. Iler “Effect of adsorbed alumina on the solubility of amorphous silica in water”, J. of Coll. and Interf. Science, 43 (1973), no 2, 399–408.

    CAS  Article  Google Scholar 

  6. 6.

    H.T. Fullam “Solubility effects in waste-glass/demineralized-water systems”, PNL 3614 (1981).

  7. 7.

    A. Barkatt et al. “Evaluation of chemical stability of vitrification media for radioactive waste products”, Phys. and Chem. of Glasses, 22 (1981) no 4, 73–85.

    CAS  Google Scholar 

  8. 8.

    R.O. Lokken “Leaching behaviour of glass ceramic nuclear waste forms”, PNL 4022 (1981).

  9. 9.

    R.M. Garrels et al. “Solutions, minerals and equilibria”, Harper and Row, (New York), 1965.

    Google Scholar 

  10. 10.

    F. Lanza et al. “Methodology of leach testing of borosilicate glasses in water”, Proc. First European Community Conference on Radioactive Waste Management and Disposal, Luxembourg (1980).

Download references

Author information



Corresponding author

Correspondence to P. Van Iseghem.

Additional information

Supported in part by the Camnission of the European Communities

Rights and permissions

Reprints and Permissions

About this article

Cite this article

Van Iseghem, P., Timmerans, W. & De Batist, R. Chemical Stability of Simiulated HLW Forms in Contact With Clay Media. MRS Online Proceedings Library 11, 219 (1981).

Download citation