Structure and properties of lead-yttrium phosphate glasses

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F15%3A39900122" target="_blank" >RIV/00216275:25310/15:39900122 - 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

Structure and properties of lead-yttrium phosphate glasses

Popis výsledku v původním jazyce

Phosphate glasses of the system (40-x)PbO-xY2O3-60P2O5 were prepared and studied. It was found that yttrium oxide is able to form glasses with the composition (40-x)PbO-xY2O3-60P2O5 in only a narrow concentration range of 0-15 mol% Y2O3, nevertheless thereplacement of PbO by Y2O3 leads to often significant changes in the physicochemical and thermal behaviour of these glasses. TD and DSC measurements showed that the incorporation of Y3+ ions into the structural network of the lead phosphate glasses results in an increase of the glass transition temperature and the crystallization temperature. The observed differences in the glass transition temperature indicate an increase in bonding strength with increasing Y2O3 content. Raman spectra indicated that the structural network of the glasses is formed mainly from metaphosphate structural units Q2. The addition of Y3+ ions into the structural network causes partial disproportionation of the phosphate groups according to 2Q2 RIGHTWARDS ARROW

Název v anglickém jazyce

Structure and properties of lead-yttrium phosphate glasses

Popis výsledku anglicky

Phosphate glasses of the system (40-x)PbO-xY2O3-60P2O5 were prepared and studied. It was found that yttrium oxide is able to form glasses with the composition (40-x)PbO-xY2O3-60P2O5 in only a narrow concentration range of 0-15 mol% Y2O3, nevertheless thereplacement of PbO by Y2O3 leads to often significant changes in the physicochemical and thermal behaviour of these glasses. TD and DSC measurements showed that the incorporation of Y3+ ions into the structural network of the lead phosphate glasses results in an increase of the glass transition temperature and the crystallization temperature. The observed differences in the glass transition temperature indicate an increase in bonding strength with increasing Y2O3 content. Raman spectra indicated that the structural network of the glasses is formed mainly from metaphosphate structural units Q2. The addition of Y3+ ions into the structural network causes partial disproportionation of the phosphate groups according to 2Q2 RIGHTWARDS ARROW

Druh

D - Stať ve sborníku

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 statě ve sborníku

Proceedings of the 3rd International Conference on Chemical Technology

ISBN

978-80-86238-79-1

ISSN

2336-811X

e-ISSN

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Počet stran výsledku

4

Strana od-do

177-180

Název nakladatele

Česká společnost průmyslové chemie

Místo vydání

Praha

Místo konání akce

Mikulov

Datum konání akce

13. 4. 2015

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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