Abstract
New studies utilizing electron microscopic techniques have revealed the immobilization of radionuclides in crystalline ceramic waste forms to be not merely a question of substituting waste elements into the appropriate crystallographic sites of a host matrix. Rather than entering the ceramic as a “continuous” solid solution it has been found that the incorporation of highly radioactive waste elements is commonly accompanied by structural modification. This may take the form of cation ordering, crystallographic shear, or twinning on a unit cell scale. Such mechanisms considerably enhance the capacity of a ceramic to immobilize (simulated) radwaste and impart to it the flexibility to respond to inevitable variations in wastestream composition.
Original language | English |
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Pages (from-to) | 357-365 |
Number of pages | 9 |
Journal | Angewandte Chemie - International Edition |
Volume | 24 |
Issue number | 5 |
DOIs | |
Publication status | Published - May 1985 |
Externally published | Yes |
ASJC Scopus Subject Areas
- Catalysis
- General Chemistry
Keywords
- Ceramics
- Radiochemistry
- Radionuclides
- Titanates
- Waste disposal