Physical properties and chemical durability
of zinc-lead-iron phosphate glasses
2 Institut de Chimie de la Matière Condensée de Bordeaux, CNRS, Université de Bordeaux I
87,Avenue du Dr A Schweitzer, 33608 Pessac Cedex (France)
* Corresponding author. E-mail:email@example.com
Received: 03 March 2006; revised version accepted:27 June 2006
This study provides experimental data on the physical properties and the chemical durability of zinc-lead-iron phosphate glasses with the general composition (100-x) (50P2O5-15ZnO-35PbO)-xFe2O3. The physical properties show that the addition of Fe2O3 results in a high reticulation of the glass network in the composition range 0 £ x £ 10. As a consequence, a drastic improvement of the chemical durability was noticed and the dissolution mechanism was found to be controlled by a hydrolysis reaction with a non congruent dissolution.
Keywords : Phosphate glasses; Physical properties; Chemical durability; Toxic heavy metal.