Structure and properties of titanium-zinc borophosphate glasses

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F05%3A00002863" target="_blank" >RIV/00216275:25310/05:00002863 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Structure and properties of titanium-zinc borophosphate glasses
Original language description
The structure of 50ZnO-10B2O3-40P2O5+xTiO2 glasses prepared by slow cooling (for x = 0-24 mol%TiO2) or by quenching (for x = 28-64 mol%TiO2) was studied by Raman, 31P and 11B MAS NMR spectroscopy. TiO2 incorporates into the glass structure which resultsin a decrease in the molar volume and an increase in the glass transition temperature. According to Raman spectra Ti atoms form distorted TiO6 octahedra and their incorporation into the structural network results in the depolymerization of phosphate chains. 11B NMR spectra of the glasses with increasing TiO2 content show gradual changes from one symmetrical signal of B(OP)4 units to a broad complex signal which was separated into four signals ascribed to four different types of BO4 units. With increasing TiO2 content a part of boron atoms changes from tetrahedral BO4 to trigonal BO3 units, which is ascribed to the formation of TiO6 units in the glass structure.
Czech name
Struktura a vlastnosti titaničito-zinečnatých borofosfátových skel
Czech description
Byla studována struktura a vlastnosti borofosforečnanových skel připravených v kompoziční řadě 50ZnO-10B2O3-40P2O5+xTiO2 připravených pomalým ( x = 0-24 mol%TiO2) a rychlým (x = 28-64 mol%TiO2) chlazením taveniny.

Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
JH - Ceramics, fire-proof materials and glass
OECD FORD branch
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Project
<a href="/en/project/GA104%2F04%2F0711" target="_blank" >GA104/04/0711: Borophosphate and phosphate glasses and glass-ceramics with special theromechanical properties</a><br>
Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year
2005
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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