6533b86ffe1ef96bd12cdebd
RESEARCH PRODUCT
Densified low-hygroscopic form of P2O5 glass
S. G. LyapinA. G. LyapinGrégory TricotO. F. YagafarovYoshinori KatayamaM. V. KondrinShinji KoharaJaakko AkolaVadim V. Brazhkinsubject
QuenchingMaterials scienceCoordination sphereta114OxideMineralogyGeneral Chemistrychemistry.chemical_compoundOxygen atomVolume (thermodynamics)chemistryGlassy matrixMaterials ChemistryComposite materialdescription
P2O5 compound is an archetypical glass-forming oxide with a record-high hygroscopicity, which makes both the study and potential industrial uses of the glass extremely difficult. We found that the quenching from the P2O5 melt under ultrahigh pressures enables obtaining densified P2O5 glasses with a residual densification up to 12% at normal conditions. These glasses have a low hygroscopicity and can exist under air conditions for several weeks. An examination of the structure of the new form of P2O5 glass reveals a significant increase in neighbors of terminal oxygen atoms in the second coordination sphere and a cardinal decrease of the volume of nanovoids in the glassy matrix. The research on the physical properties of a non-hygroscopic form of P2O5 glass will possibly allow it to be used for the synthesis of new phosphate glasses and their applications.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2011-01-01 | Journal of Materials Chemistry |