Structural and thermochemical properties of sodium magnesium phosphate glasses
| hal.structure.identifier | Laboratoire de Thermodynamique Appliquée [LR01S10] | |
| dc.contributor.author | OUESLATI OMRANI, Refka | |
| hal.structure.identifier | Laboratoire de Chimie des Matériaux Solides | |
| dc.contributor.author | KAOUTAR, Abdeltif | |
| hal.structure.identifier | Laboratoire de Chimie des Matériaux Solides | |
| dc.contributor.author | EL JAZOULI, Abdelaziz | |
| hal.structure.identifier | Laboratoire de Physico-Chimie des Matériaux Inorganiques | |
| dc.contributor.author | KRIMI, Saida | |
| hal.structure.identifier | Laboratoire de Thermodynamique Appliquée [LR01S10] | |
| dc.contributor.author | KHATTECH, Ismail | |
| hal.structure.identifier | Laboratoire de Thermodynamique Appliquée [LR01S10] | |
| dc.contributor.author | JEMAL, Mohamed | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | VIDEAU, Jean-Jacques | |
| hal.structure.identifier | Institut des Sciences Moléculaires [ISM] | |
| dc.contributor.author | COUZI, Michel | |
| dc.date.issued | 2015 | |
| dc.identifier.issn | 0925-8388 | |
| dc.description.abstractEn | Ternary phosphate based glasses with the general formula (50−x/2)Na2O–xMgO–(50−x/2)P2O5 (0 ⩽ x ⩽ 42.8 mol%), where the O/P ratio was varied from 3 to 3.75, have been prepared using a conventional melt quenching technique. Samples were investigated by means of density measurements, Fourier-transformed infrared (FTIR), Raman and 31P solid state magic angle spinning nuclear magnetic resonance (MAS-NMR) spectroscopies, differential scanning calorimetry (DSC), inductively coupled plasma atomic emission spectroscopy (ICP/AES) analysis and calorimetric dissolution.The depolymerization of metaphosphate chains are described by the decrease of Q2 tetrahedral sites allowing the formation of pyrophosphate groups (Q1) revealed by spectroscopic investigations. As a result, the increase of density and glass transition temperature when x rises. Calorimetric study shows that the dissolution phenomenon is endothermic for a lower MgO content and becomes exothermic when magnesium oxide is gradually incorporated, suggesting the disruption of phosphate chains with increasing O/P ratio. | |
| dc.language.iso | en | |
| dc.publisher | Elsevier | |
| dc.subject.en | Magnesium phosphate glasses | |
| dc.subject.en | Calorimetric dissolution | |
| dc.subject.en | Depolymerization | |
| dc.subject.en | Metaphosphate glasses | |
| dc.subject.en | Pyrophosphate groups | |
| dc.title.en | Structural and thermochemical properties of sodium magnesium phosphate glasses | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1016/j.jallcom.2015.01.297 | |
| dc.subject.hal | Chimie/Matériaux | |
| bordeaux.journal | Journal of Alloys and Compounds | |
| bordeaux.page | 766-771 | |
| bordeaux.volume | 632 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-01122724 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-01122724v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal%20of%20Alloys%20and%20Compounds&rft.date=2015&rft.volume=632&rft.spage=766-771&rft.epage=766-771&rft.eissn=0925-8388&rft.issn=0925-8388&rft.au=OUESLATI%20OMRANI,%20Refka&KAOUTAR,%20Abdeltif&EL%20JAZOULI,%20Abdelaziz&KRIMI,%20Saida&KHATTECH,%20Ismail&rft.genre=article |
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