Digitální knihovnaUPCE
 

Structure and properties of TeO2 and GeO2 containing phosphate and borophosphate glasses

Disertační práce

Abstrakt

The glasses of various compositions in ternary system Li2O-P2O5-GeO2 and quaternary systems Li2O-B2O3-P2O5-TeO2, CaO-B2O3-P2O5-TeO2, Ag2O-B2O3-P2O5-TeO2, Li2O-B2O3-P2O5-GeO2 were synthesised and studied in 7 compositional series. The basic physicochemical properties of the glasses (density, molar volume, chemical durability etc.) were investigated using different analytical methods. The structure of glasses was studied using 31P, 11B MAS NMR and Raman spectroscopy. Thermal behaviour of glasses was investigated with the differential scanning calorimetry, thermodilatometry and hot-stage microscopy. From obtained thermoanalytical curves the values of glass transition temperature, dilatation softening temperature, crystallisation temperature and thermal expansion coefficient were obtained. DSC method was used also for the study of nucleation rate and nucleation (crystallisation) mechanism of the glasses. Crystalline phases obtained by annealing of glasses were identified by X-ray diffraction analysis.

Rozsah stran

112 s. + teze

ISSN

Trvalý odkaz na tento záznam

Projekt

Zdrojový dokument

Vydavatelská verze

Přístup k e-verzi

Práce není přístupná

Název akce

ISBN

Studijní obor

Chemistry and Technology of Inorganic Materials

Studijní program

Chemistry and Technology of Materials

Signatura tištěné verze

D33721

Umístění tištěné verze

Univerzitní knihovna (studovna)

Přístup k tištěné verzi

Klíčová slova

phosphate glasses, borophosphate glasses, tellurium dioxide, germanium dioxide, crystallisation, thermal behaviour

Endorsement

Review

item.page.supplemented

item.page.referenced