Thermodynamics of Silicate Melts: Configurational Properties

Richet, Pascal; Neuville, Daniel R.

doi:10.1007/978-1-4612-2842-4_5

Cited by 93 publications

(77 citation statements)

References 64 publications

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“…(3)) to the calorimetrically measured values of Cp c and Tg onset and to measurements of melt viscosity. We mainly follow the methods of Richet (1984); Richet andBottinga (1986, 1995); Toplis et al (1997); Toplis (1998); Richet and Neuville (1992), and Webb (2008). However, our optimization strategy follows the work of Russell et al (2002Russell et al ( , 2003 and Russell and Giordano (2005) which proposes that all silicate melts converge to a single, common, value of viscosity at high temperature (i.e.…”

Section: Modelling Methodologymentioning

confidence: 99%

“…Alternatively, Eq. (3) can be fit to mixed datasets comprising calorimetric estimates of Tg and Cp c and measurements of melt viscosity to calculate values of A, B and S c (Tg) (e.g., Richet and Neuville, 1992;Richet and Bottinga, 1995;Giordano et al, 2015). This approach has been adopted and modified by several subsequent workers (e.g., Toplis, 1998;Webb, 2008;Whittington et al, 2009;Avramov, 2013).…”

Section: Introductionmentioning

confidence: 99%

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Modelling configurational entropy of silicate melts

Russell

Giordano

2017

Chemical Geology

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Section: Modelling Methodologymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Modelling configurational entropy of silicate melts

Russell

Giordano

2017

Chemical Geology

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“…For both andesite and rhyolite compositions, we also discuss the manner in which the heat capacity and the viscosity are related to those of their oxide or mineral components. Finally, we relate the thermodynamic and rheological properties of the melts through the configurational entropy theory of relaxation processes (Adam and Gibbs 1965;Richet 1984;Richet and Neuville 1992), which provides a firm theoretical framework for consistent modeling of both kinds of melt properties.…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic and rheological properties of rhyolite and andesite melts

Neuville

Courtial

Dingwell

et al. 1993

Contr. Mineral. and Petrol.

102

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Abstract.The heat capacities of a rhyolite and an andesite glass and liquid have been investigated from relativeenthalpy measurements made between 400 and 1800 K. For the glass phases, the experimental data agree with empirical models of calculation of the heat capacity. For the liquid phases, the agreement is less good owing to strong interactions between alkali metals and aluminum, which are not currently accounted for by empirical heat capacity models. The viscosity of both liquids has been measured from the glass transition to 1800 K. The temperature dependence of the viscosity is quantitatively related to the configurational heat capacity (determined calorimetrically) through the configurational entropy theory of relaxation processes. For both rhyolite and andesite melts, the heat capacity and viscosity do not differ markedly from those obtained by additive modeling from components with mineral compositions.

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“…It has been reported that, if aluminum is included in melt, the heat capacity shows positive temperature dependence and nonideal mixing behavior in terms of composition. 13), 40) This suggests that the partial molar heat capacity for Al 2 O 3 (Cp Al2O3 ) depends both on the temperature and composition. The Cp Al2O3 calculated from the Cp Melt of ternary aluminosilicate 11),12),40) 42) and Cp i of Table 7 are shown in Fig.…”

Section: Meltmentioning

confidence: 99%

“…Then, we assumed that the Cp Al2O3 in E-Mg, E-Ca and Eglass are the same as those in SiO 2 Al 2 O 3 MgO, 42) 76.5SiO 2 11.75Al 2 O 3 11.75CaO 40) and 50SiO 2 25Al 2 O 3 25CaO, 12) respectively. The Cp Al2O3 in sodium-bearing borosilicate melts (BNC, Pyrex and BB) were assumed same as that in 75SiO 2 12.5Al 2 O 3 12.5Na 2 O melt.…”

Section: Meltmentioning

confidence: 99%

Heat capacity measurements of 75SiO2–6B2O3–10Al2O3–9MO (M=Mg, Ca, Sr and Ba) glasses and melts

Sugawara

Hamano

Yoshida

et al. 2013

J. Ceram. Soc. Japan

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Heat capacities of 75SiO 2 6B 2 O 3 10Al 2 O 3 9MO (M=Mg,Ca, Sr and Ba) glasses and melts were determined between 345 and 1877 K by differential scanning calorimetry and drop calorimetry. The heat capacities of glasses and melts increase with increasing field strength of alkaline-earth metals. The glass transition takes place when the heat capacity of glass reaches 9597% of Dulong-Petit harmonic limit. The configurational contribution to the melt heat capacity is about 20% and is independent of temperature. The partial molar heat capacity of B 2 O 3 (Cp B2O3 ) in borosilicate melts containing alkaline-earth metals approaches to constant value (110120 J·K ¹1 ·mol ¹1 ) above 1600 K and is consistent with heat capacity of pure B 2 O 3 liquid. This suggests that there are no significant differences in coordination state of boron and in BSi ordering among Mg, Ca, Sr and Ba-bearing alumino-borosilicate melts.

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Thermodynamics of Silicate Melts: Configurational Properties

Cited by 93 publications

References 64 publications

Modelling configurational entropy of silicate melts

Modelling configurational entropy of silicate melts

Thermodynamic and rheological properties of rhyolite and andesite melts

Heat capacity measurements of 75SiO<sub>2</sub>–6B<sub>2</sub>O<sub>3</sub>–10Al<sub>2</sub>O<sub>3</sub>–9MO (M=Mg, Ca, Sr and Ba) glasses and melts

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