Structural relaxation of PbO-WO3-P2O5 glasses

Kód výsledku v IS VaVaI

RIV/00216275:25310/13:39896479 - isvavai.cz

Výsledek na webu

http://link.springer.com/article/10.1007%2Fs10973-013-3082-7

DOI - Digital Object Identifier

10.1007/s10973-013-3082-7

Jazyk výsledku

angličtina

Název v původním jazyce

Structural relaxation of PbO-WO3-P2O5 glasses

Popis výsledku v původním jazyce

The structural relaxation of three compositional series of PbO-WO3-P2O5 glasses with composition (0.5 - x/2)PbO center dot xWO(3)center dot(0.5 - x/2)P2O5, x = 0, 0.1, 0.2, 0.3, 0.4, and 0.5; 0.5PbO center dot xWO(3)center dot(0.5 - x)P2O5, x = 0, 0.1, 0.2, and 0.3; and (0.5 - x)PbO center dot xWO(3)center dot 0.5P(2)O(5), x = 0, 0.1, 0.2, 0.3, 0.4, and 0.5 was studied by thermomechanical analysis. The structural relaxation was studied in the transformation region using the Tool-Narayanaswamy-Moynihan'sand Tool-Narayanaswamy-Mazurin's models. The relaxation function of Kohlrausch Williams and Watts was used. The parameters of both models were calculated by nonlinear regression analysis of thermodilatometric curves measured by thermomechanical analyzerunder the constant load. Both models very well describe the experimental data. It was found that the modulus is increasing with increasing amount of WO3 in all glasses. On the contrary, the width of the spectrum of relaxation times is de

Název v anglickém jazyce

Structural relaxation of PbO-WO3-P2O5 glasses

Popis výsledku anglicky

The structural relaxation of three compositional series of PbO-WO3-P2O5 glasses with composition (0.5 - x/2)PbO center dot xWO(3)center dot(0.5 - x/2)P2O5, x = 0, 0.1, 0.2, 0.3, 0.4, and 0.5; 0.5PbO center dot xWO(3)center dot(0.5 - x)P2O5, x = 0, 0.1, 0.2, and 0.3; and (0.5 - x)PbO center dot xWO(3)center dot 0.5P(2)O(5), x = 0, 0.1, 0.2, 0.3, 0.4, and 0.5 was studied by thermomechanical analysis. The structural relaxation was studied in the transformation region using the Tool-Narayanaswamy-Moynihan'sand Tool-Narayanaswamy-Mazurin's models. The relaxation function of Kohlrausch Williams and Watts was used. The parameters of both models were calculated by nonlinear regression analysis of thermodilatometric curves measured by thermomechanical analyzerunder the constant load. Both models very well describe the experimental data. It was found that the modulus is increasing with increasing amount of WO3 in all glasses. On the contrary, the width of the spectrum of relaxation times is de

Druh

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

CEP obor

JH - Keramika, žáruvzdorné materiály a skla

OECD FORD obor

—

Projekt

GA13-00355S: Vícesložková fosforečnanová a borofosforečnanová skla

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2013

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

114

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

8

Strana od-do

947-954

Kód UT WoS článku

000327460300002

EID výsledku v databázi Scopus

—