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Abstract

A large series of actinide containing borosilicate waste glasses with different compositions and of different potential waste ceramics (including SYNROC) was produced in the European Institute for Transuranium Elements some years ago. The actinides were Pu, Np, and also Am and Cm. In this paper these latter two short-lived actinides were used to observe effects of radiation damage and of He-accumulation in a short time scale, thus simulating the long-time behaviour of glasses or ceramics containing high level waste or Pu only. A number of interesting properties such as solubility of actinides in the matrix, its hardness, fracture toughness, Youngs modulus, and leach rates in water at different temperatures, were measured in the as-produced products and subsequently again as a function of alpha-decay damage. Volume changes (swelling) and, for the ceramics, phase changes from the crystalline to the amorphous phase were also detected and damage annealing was investigated. This database, though mainly measured on Cm-containing glasses and ceramics, is used to provide predictions on the performance of Pu-matrices.

Additional information

Authors: MATZKE H, JRC Karlsruhe (DE);VAN GEEL J, JRC Karlsruhe (DE)
Bibliographic Reference: Paper presented : St Petersburg (SU), May, 1996
Availability: Available from (1) as Paper EN 39171 ORA
Record Number: 199610946 / Last updated on: 1996-09-30
Category: PUBLICATION
Original language: en
Available languages: en