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Statements

Subject Item
n2:RIV%2F60461373%3A22310%2F14%3A43898466%21RIV15-MSM-22310___
rdf:type
skos:Concept n14:Vysledek
dcterms:description
The structure-viscosity relationship of 15Na(2)O center dot xMgO center dot(10-x)CaO center dot 75SiO(2) (x = 0, 2, 4, 6, 8, 10) glasses was studied. The structure of studied glasses was described by the thermodynamic model of Shakhmatkin and Vedishcheva. Thermodynamic modeling resulted in eight components with significant abundance in the studied glasses, i.e. SiO2, 2MgO center dot SiO2, MgO center dot SiO2, Na2O center dot 3CaO center dot 6SiO(2), Na2O center dot CaO center dot 5SiO(2), Na2O center dot MgO center dot 4SiO(2), Na2O center dot SiO2 and Na2O center dot 2SiO(2). Due to significant positive correlations between equilibrium molar amounts of (2Mg0 center dot SiO2MgO center dot SiO2), (Na2O center dot 3CaO center dot 6SiO(2)-Na2O center dot CaO center dot 5SiO(2)), (Na2O center dot MgO center dot 4SiO(2)-Na2O center dot SiO2), and (Na2O center dot SiO2Na2O-2SiO(2)) only four significant components were considered in the regression treatment, namely SiO2, MgO center dot SiO2, Na2O center dot 3CaO center dot 6SiO(2), and Na2O center dot 2SiO(2). The experimental viscosity data obtained in the viscosity range from 10(2) dPa.s to 10(12) dPa.s were alternatively described by various commonly used viscosity equations Adam and Gibbs, Avramov and Milchev, and MYEGA. The compositional dependence of parameters of the above viscosity equations was described by multi-linear formulas taking as independent variables the equilibrium molar amounts of significant components of the thermodynamic model. The statistical analysis of the non-linear regression results was performed and only the statistically significant members were retained in the multi-linear forms. The structure-viscosity relationship of 15Na(2)O center dot xMgO center dot(10-x)CaO center dot 75SiO(2) (x = 0, 2, 4, 6, 8, 10) glasses was studied. The structure of studied glasses was described by the thermodynamic model of Shakhmatkin and Vedishcheva. Thermodynamic modeling resulted in eight components with significant abundance in the studied glasses, i.e. SiO2, 2MgO center dot SiO2, MgO center dot SiO2, Na2O center dot 3CaO center dot 6SiO(2), Na2O center dot CaO center dot 5SiO(2), Na2O center dot MgO center dot 4SiO(2), Na2O center dot SiO2 and Na2O center dot 2SiO(2). Due to significant positive correlations between equilibrium molar amounts of (2Mg0 center dot SiO2MgO center dot SiO2), (Na2O center dot 3CaO center dot 6SiO(2)-Na2O center dot CaO center dot 5SiO(2)), (Na2O center dot MgO center dot 4SiO(2)-Na2O center dot SiO2), and (Na2O center dot SiO2Na2O-2SiO(2)) only four significant components were considered in the regression treatment, namely SiO2, MgO center dot SiO2, Na2O center dot 3CaO center dot 6SiO(2), and Na2O center dot 2SiO(2). The experimental viscosity data obtained in the viscosity range from 10(2) dPa.s to 10(12) dPa.s were alternatively described by various commonly used viscosity equations Adam and Gibbs, Avramov and Milchev, and MYEGA. The compositional dependence of parameters of the above viscosity equations was described by multi-linear formulas taking as independent variables the equilibrium molar amounts of significant components of the thermodynamic model. The statistical analysis of the non-linear regression results was performed and only the statistically significant members were retained in the multi-linear forms.
dcterms:title
Thermodynamic model and viscosity of Na2O-MgO-CaO-SiO2 glasses Thermodynamic model and viscosity of Na2O-MgO-CaO-SiO2 glasses
skos:prefLabel
Thermodynamic model and viscosity of Na2O-MgO-CaO-SiO2 glasses Thermodynamic model and viscosity of Na2O-MgO-CaO-SiO2 glasses
skos:notation
RIV/60461373:22310/14:43898466!RIV15-MSM-22310___
n3:aktivita
n6:I n6:S
n3:aktivity
I, S
n3:cisloPeriodika
10
n3:dodaniDat
n13:2015
n3:domaciTvurceVysledku
n12:5366992
n3:druhVysledku
n5:J
n3:duvernostUdaju
n17:S
n3:entitaPredkladatele
n16:predkladatel
n3:idSjednocenehoVysledku
50381
n3:idVysledku
RIV/60461373:22310/14:43898466
n3:jazykVysledku
n10:eng
n3:klicovaSlova
Silicate glasses; Thermodynamic model; Viscosity
n3:klicoveSlovo
n9:Thermodynamic%20model n9:Silicate%20glasses n9:Viscosity
n3:kodStatuVydavatele
NL - Nizozemsko
n3:kontrolniKodProRIV
[9D40B1B9218F]
n3:nazevZdroje
Journal of Non-crystalline Solids
n3:obor
n11:JH
n3:pocetDomacichTvurcuVysledku
1
n3:pocetTvurcuVysledku
4
n3:rokUplatneniVysledku
n13:2014
n3:svazekPeriodika
401
n3:tvurceVysledku
Liška, Marek Chovanec, Jozef Chromčíková, Mária Macháček, Jan
n3:wos
000341463300044
s:issn
0022-3093
s:numberOfPages
4
n15:doi
10.1016/j.jnoncrysol.2013.12.015
n18:organizacniJednotka
22310