Physical properties and chemical durability of zinc-lead-iron phosphate glasses

Abdelouahab El Hadrami (1, 2) , Mohamed Mesnaoui (2) , Mohamed Maazaz (2) , Jean-Jacques Videau (1)

1 ICMCB - Institut de Chimie de la Matière Condensée de Bordeaux
2 Laboratoire de la Matière Condensée et de l'Environnement

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.

Mots clés: Phosphate glasses; Physical properties; Chemical durability; Toxic heavy metal

Domaines: Matériaux

Abdelouahab El Hadrami, Mohamed Mesnaoui, Mohamed Maazaz, Jean-Jacques Videau. Physical properties and chemical durability of zinc-lead-iron phosphate glasses. Physical and Chemical News, 2007, 35, pp.138-142. ⟨hal-00203247⟩