Szczegóły publikacji
Opis bibliograficzny
The spectroscopic studies of gel-derived glasses and glass-ceramics in the ${Na_{2}O (Li_{2}O)-B_{2}O_{3}-P_{2}O_{5}-SiO_{2}}$ system / A. ADAMCZYK, M. HANDKE // Journal of Molecular Structure ; ISSN 0022-2860. — 2001 — vol. 596 spec. iss., s. 47–54. — Bibliogr. s. 54, Abstr. — 3rd International Conference of the Vibrational Spectroscopy in Materials Science : Krakow, Poland, 23–26 September 2000
Autorzy (2)
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 7561 |
|---|---|
| Data dodania do BaDAP | 2002-01-19 |
| DOI | 10.1016/S0022-2860(01)00683-4 |
| Rok publikacji | 2001 |
| Typ publikacji | referat w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | Journal of Molecular Structure |
Abstract
The gel-derived borophosphosilicate materials containing Na+ and Li+ cations by FTIR spectroscopy and X-ray diffraction methods were studied. The results obtained enabled one to define the structure of samples containing up to 10% mol. BPO4. The alkali ions, Na+ and Li+ can be treated as borate and phosphate network depolymerisators. There is also no evidence of boron coordination changes, from trigonal to tetrahedral caused by Na2O and Li2O oxide addition to pure borophosphosilicate materials. Concurrently, the silicate network is left unchanged. The bands due to the B-O bond vibrations are not observed in the IR spectra of the crystalline materials, obtained by heating samples of composition analogous to amorphous ones. Such bands are present in the spectra of crystalline alkali-free samples of the same BPO4 content. The amorphous and crystalline alkali-containing samples by the EDX microprobe were also studied. The results obtained showed that the heating of alkali borophosphosilicate samples caused the volatilisation of boron, phosphorus and alkali compounds from the structures studied. Such a process does not take place in case of alkali-free samples. (C) 2001 Elsevier Science BN. All rights reserved.
