Thermal properties and crystallization of BaO-MoO3-P2O5 glasses

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F18%3A39912737" target="_blank" >RIV/00216275:25310/18:39912737 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1007/s10973-017-6864-5" target="_blank" >http://dx.doi.org/10.1007/s10973-017-6864-5</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s10973-017-6864-5" target="_blank" >10.1007/s10973-017-6864-5</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Thermal properties and crystallization of BaO-MoO3-P2O5 glasses

Popis výsledku v původním jazyce

The thermal behavior and crystallization of barium molybdate-phosphate glasses were studied in two compositional series, namely A: (100 - x)Ba(PO3)(2)-xMoO(3) (with x = 0-70 mol%) and B: 50BaO-yMoO(3)-(50 - y)P2O5 (with y = 0-15 mol% MoO3). Thermal properties were studied with differential thermal analysis and dilatometry. Glass transition temperature increases in series A in the range of 0-40 mol% MoO3 and then decreases with a further increase in MoO3 content, whereas the thermal expansion coefficient in series A reveals a minimum at 50 mol% MoO3. These trends are not observed in series B, where the glass transition temperature increases in the range of 0-15 mol% MoO3 and the thermal expansion coefficient almost does not change. Crystallization of these glasses was studied by X-ray diffraction analysis, Raman and P-31 MAS NMR spectroscopy. Large thermal stability of glass with a composition 35BaO-30MoO(3)-35P(2)O(5) toward crystallization was demonstrated. Crystallization of glasses resulted in the formation of the compound Ba(MoO2)(2)(PO4)(2) in this ternary system. Raman spectroscopy also provided information on the formation of glass-crystalline samples in some studied compositions.

Název v anglickém jazyce

Thermal properties and crystallization of BaO-MoO3-P2O5 glasses

Popis výsledku anglicky

The thermal behavior and crystallization of barium molybdate-phosphate glasses were studied in two compositional series, namely A: (100 - x)Ba(PO3)(2)-xMoO(3) (with x = 0-70 mol%) and B: 50BaO-yMoO(3)-(50 - y)P2O5 (with y = 0-15 mol% MoO3). Thermal properties were studied with differential thermal analysis and dilatometry. Glass transition temperature increases in series A in the range of 0-40 mol% MoO3 and then decreases with a further increase in MoO3 content, whereas the thermal expansion coefficient in series A reveals a minimum at 50 mol% MoO3. These trends are not observed in series B, where the glass transition temperature increases in the range of 0-15 mol% MoO3 and the thermal expansion coefficient almost does not change. Crystallization of these glasses was studied by X-ray diffraction analysis, Raman and P-31 MAS NMR spectroscopy. Large thermal stability of glass with a composition 35BaO-30MoO(3)-35P(2)O(5) toward crystallization was demonstrated. Crystallization of glasses resulted in the formation of the compound Ba(MoO2)(2)(PO4)(2) in this ternary system. Raman spectroscopy also provided information on the formation of glass-crystalline samples in some studied compositions.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10402 - Inorganic and nuclear chemistry

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2018

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Thermal Analysis and Calorimetry

ISSN

1388-6150

e-ISSN

—

Svazek periodika

131

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

8

Strana od-do

2303-2310

Kód UT WoS článku

000425965400027

EID výsledku v databázi Scopus

2-s2.0-85036575576