An investigation of (100-x)[0.5PbO-0.2B2O3-0.3P2O5]-xMoO3 glasses

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F15%3A39900140" target="_blank" >RIV/00216275:25310/15:39900140 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

An investigation of (100-x)[0.5PbO-0.2B2O3-0.3P2O5]-xMoO3 glasses

Popis výsledku v původním jazyce

Lead borophosphate glasses of the composition (100-x)[0.5PbO-0.2B2O3-0.3P2O5]-xMoO3 with 0-70 mol% MoO3 were prepared and studied. Thermal studies were carried out with DTA and dilatometry. The glass transition temperature in these glass series decreasessteadily with increasing MoO3 content from 467 to 342oC within the range of x = 0-70. The glass structure was studied by 31 P and 11B MAS NMR and by Raman spectroscopy. These studies were devoted to the investigation of changes in boron coordination inthe dependence on changes of MoO3 content and of the B2O3/P2O5 ratio. When the molybdenum oxide and boron oxide content is low, tetrahedral BO4 units prevail in the structural network. With higher B2O3 content as well as with higher MoO3 content, trigonal BO3 groups are also formed. 11B MAS NMR spectra of BO4 units in the glasses with a low boron content reveal two symmetrical signals of BO4 units, ascribed to B(OP)3O and B(OP)2O2 units with B-O-P and B(4)-O-B(4) bonds. In the 11B spectr

Název v anglickém jazyce

An investigation of (100-x)[0.5PbO-0.2B2O3-0.3P2O5]-xMoO3 glasses

Popis výsledku anglicky

Lead borophosphate glasses of the composition (100-x)[0.5PbO-0.2B2O3-0.3P2O5]-xMoO3 with 0-70 mol% MoO3 were prepared and studied. Thermal studies were carried out with DTA and dilatometry. The glass transition temperature in these glass series decreasessteadily with increasing MoO3 content from 467 to 342oC within the range of x = 0-70. The glass structure was studied by 31 P and 11B MAS NMR and by Raman spectroscopy. These studies were devoted to the investigation of changes in boron coordination inthe dependence on changes of MoO3 content and of the B2O3/P2O5 ratio. When the molybdenum oxide and boron oxide content is low, tetrahedral BO4 units prevail in the structural network. With higher B2O3 content as well as with higher MoO3 content, trigonal BO3 groups are also formed. 11B MAS NMR spectra of BO4 units in the glasses with a low boron content reveal two symmetrical signals of BO4 units, ascribed to B(OP)3O and B(OP)2O2 units with B-O-P and B(4)-O-B(4) bonds. In the 11B spectr

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

JH - Keramika, žáruvzdorné materiály a skla

OECD FORD obor

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Projekt

<a href="/cs/project/GA13-00355S" target="_blank" >GA13-00355S: Vícesložková fosforečnanová a borofosforečnanová skla</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název periodika

Physics and Chemistry of Glasses: European Journal of Glass Science and Technology Part B

ISSN

1753-3562

e-ISSN

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Svazek periodika

56

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

7

Strana od-do

1-7

Kód UT WoS článku

000352247300001

EID výsledku v databázi Scopus

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