| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5441538 | Journal of Non-Crystalline Solids | 2017 | 4 Pages |
Abstract
MgO-CaO-P2O5-SiO2 invert glass in the orthophosphate region was successfully prepared using a melt-quenching method, and its structure and dissolution behavior were evaluated. The 31P and 29Si solid-state nuclear magnetic resonance and Raman spectroscopies showed that the glass structure consisted of orthophosphate (Qp0) and orthosilicate (QSi0) tetrahedra cross-linked by cations such as Mg2Â + and Ca2Â + ions; there were no chain phosphate groups and silicate network structures. MgO present in the glass acts as an intermediate oxide that cross-links Qp0 and QSi0, thereby imparting excellent glass-forming ability. Mg2Â + and Ca2Â + ions present in the glass were preferentially bonded with silicate and phosphate groups to form SOMg and POCa bonds, respectively. The ions-releasing amount from the glass was higher than that from previously reported phosphate invert glasses.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Sungho Lee, Takayoshi Nakano, Toshihiro Kasuga,