Szczegóły publikacji
Opis bibliograficzny
Influence of $Gd_{2}O_{3}$ on thermal stability of oxyfluoride glasses / Marta KASPRZYK, Marcin ŚRODA, Magdalena SZUMERA // Journal of Thermal Analysis and Calorimetry ; ISSN 1388-6150. — Tytuł poprz.: Journal of Thermal Analysis ; ISSN: 0368-4466. — 2017 — vol. 130 iss. 1, s. 207–220. — Bibliogr. s. 220, Abstr. — Publikacja dostępna online od: 2017-04-06
Autorzy (3)
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 108603 |
|---|---|
| Data dodania do BaDAP | 2017-09-29 |
| Tekst źródłowy | URL |
| DOI | 10.1007/s10973-017-6354-9 |
| Rok publikacji | 2017 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Creative Commons | |
| Czasopismo/seria | Journal of Thermal Analysis and Calorimetry |
Abstract
The aim of the research was to determine the influence of Gd2O3 addition on the thermal stability of glasses from BaF2–NaF–Na2O–Gd2O3–Al2O3–SiO2 system. Thermal analysis was carried out using DSC method. An impact of Gd2O3 on thermal parameters such as transformation temperature (Tg), onset temperature of crystallization (Tx), peak crystallization temperature (Tp), change of specific heat (ΔCp) and enthalpy of crystallization (ΔH) was determined. On the basis of thermal analysis, controlled crystallization was conducted. The glass-ceramic materials were identified by XRD. Crystallization kinetics of the glasses was made on the basis of two models: Kissinger and Ozawa. Changes of the glass structure were evaluated in FTIR study. It was determined that the addition of Gd2O3 to the aluminosilicate glass increases the transformation temperature, simultaneously with reducing the Δcp and thermal stability ΔT values. It results in the decrease of ΔH. As shown, Gd significantly increases the crystallization activation energy of NaAlSi3O8. Complete substitution of Al2O3 with Gd2O3 leads to forming of Gd9.33(SiO4)6O2. Forming of Na-silicates is not observed. Because of the participation of Gd in forming of fluoride phases (BaGdF5, GdF3), crystallization of Gd9.33(SiO4)6O2 is impeded.
