caa a22 4500 463190203 CHVBK 20180406164906.0 cr unu---uuuuu 170326e20071101xx s 000 0 eng 10.1007/s10973-006-7673-4 doi (NATIONALLICENCE)springer-10.1007/s10973-006-7673-4 Chemical durability of MoO3-P2O5 and K2O-MoO3-P2O5 glasses [Elektronische Daten] [L. Abbas, L. Bih, A. Nadiri, Y. El Amraoui, H. Khemakhem, D. Mezzane] Thermal and chemical durability studies of the phosphate glasses belonging to the binary MoO3-P2O5 and the ternary K2O-MoO3-P2O5 systems are reported. The chemical resistant attack tests carried out on the free alkaline MoO3-P2O5 glasses show that the glass associated with the P/Mo ratio 2 has the high chemical durability. It shows also a high glass transition temperature value. The above findings are interpreted in terms of the cross-link density of the glasses and the strength of the M-O bonds (M=P, Mo). The influence of K2O addition on the properties (density, T g, durability) of this binary high water resistant glass is studied. It is found that the chemical durability along with the other physical properties are reduced by the incroporation of K2O in the glass matrix. The results were explained by assuming the formation of non-bridging oxygens and weak bonds. The mechanism of the dissolution of these glasses is proposed. Springer Science+Business Media, LLC., 2007 chemical durability nationallicence glasses nationallicence molybdenum nationallicence phosphate nationallicence Abbas L. Céramiques et Verres, Faculté des Sciences et Techniques Errachidia, UFR, PCMI, B.P. 509, Boutalamine, Frrachidia, Maroc aut Bih L. Céramiques et Verres, Faculté des Sciences et Techniques Errachidia, UFR, PCMI, B.P. 509, Boutalamine, Frrachidia, Maroc aut Nadiri A. Faculté des Sciences de Meknes, UFR-SMI, Meknes, Maroc aut El Amraoui Y. FST-Errachidia, LPSMS, Errachidia, Maroc aut Khemakhem H. Faculté des Sciences de Sfax, LPA, Sfax, Tunisie aut Mezzane D. FST-Guéliz, LESEO, Marrakech, Maroc aut Journal of Thermal Analysis and Calorimetry Springer US; http://www.springer-ny.com 90/2(2007-11-01), 453-458 1388-6150 90:2<453 2007 90 10973 https://doi.org/10.1007/s10973-006-7673-4 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10973-006-7673-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Abbas L. Céramiques et Verres, Faculté des Sciences et Techniques Errachidia, UFR, PCMI, B.P. 509, Boutalamine, Frrachidia, Maroc aut NATIONALLICENCE 700 1- Bih L. Céramiques et Verres, Faculté des Sciences et Techniques Errachidia, UFR, PCMI, B.P. 509, Boutalamine, Frrachidia, Maroc aut NATIONALLICENCE 700 1- Nadiri A. Faculté des Sciences de Meknes, UFR-SMI, Meknes, Maroc aut NATIONALLICENCE 700 1- El Amraoui Y. FST-Errachidia, LPSMS, Errachidia, Maroc aut NATIONALLICENCE 700 1- Khemakhem H. Faculté des Sciences de Sfax, LPA, Sfax, Tunisie aut NATIONALLICENCE 700 1- Mezzane D. FST-Guéliz, LESEO, Marrakech, Maroc aut NATIONALLICENCE 773 0- Journal of Thermal Analysis and Calorimetry Springer US; http://www.springer-ny.com 90/2(2007-11-01), 453-458 1388-6150 90:2<453 2007 90 10973 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer