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Enthalpies of mixing of liquid ternary Co-Li-Sn alloys.

Yakymovych A, Fürtauer S, Flandorfer H, Ipser H - Monatsh. Chem. (2014)

Bottom Line: The investigations were performed along six sections by the addition of lithium to mixtures with the compositions [Formula: see text]/[Formula: see text] ≈ 2:98, [Formula: see text]/[Formula: see text] ≈ 1:9, and [Formula: see text]/[Formula: see text] ≈ 3:17 as well as by the addition of cobalt to mixtures with the compositions [Formula: see text]/[Formula: see text] ≈ 3:17, [Formula: see text]/[Formula: see text] ≈ 1:2, and [Formula: see text]/[Formula: see text] ≈ 1:1 at a temperature of 1,173 K.The Co-Li-Sn system shows exothermic behavior of the integral molar enthalpy of mixing in the investigated concentration range.The integral molar enthalpy of mixing of liquid Co-Li system was calculated by Miedema's model to fit our measured ternary data using an extended Redlich-Kister-Muggianu model for substitutional solutions.

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Affiliation: Department of Inorganic Chemistry (Materials Chemistry), University of Vienna, Vienna, Austria.

ABSTRACT

Abstract: The partial and integral molar enthalpies of mixing of liquid Co-Li-Sn alloys were determined using drop calorimetry. The investigations were performed along six sections by the addition of lithium to mixtures with the compositions [Formula: see text]/[Formula: see text] ≈ 2:98, [Formula: see text]/[Formula: see text] ≈ 1:9, and [Formula: see text]/[Formula: see text] ≈ 3:17 as well as by the addition of cobalt to mixtures with the compositions [Formula: see text]/[Formula: see text] ≈ 3:17, [Formula: see text]/[Formula: see text] ≈ 1:2, and [Formula: see text]/[Formula: see text] ≈ 1:1 at a temperature of 1,173 K. The Co-Li-Sn system shows exothermic behavior of the integral molar enthalpy of mixing in the investigated concentration range. The integral molar enthalpy of mixing of liquid Co-Li system was calculated by Miedema's model to fit our measured ternary data using an extended Redlich-Kister-Muggianu model for substitutional solutions.

No MeSH data available.


The integral molar enthalpy of mixing of Co–Li–Sn alloys at 1,173 K for the sections D (/ ≈ 2:98), E (/ ≈ 1:9), and F (/ ≈ 3:17) (filled circle experiment, short dashed calculated without ternary interactions, continuous dashed calculated with ternary interactions)
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Fig2: The integral molar enthalpy of mixing of Co–Li–Sn alloys at 1,173 K for the sections D (/ ≈ 2:98), E (/ ≈ 1:9), and F (/ ≈ 3:17) (filled circle experiment, short dashed calculated without ternary interactions, continuous dashed calculated with ternary interactions)

Mentions: Experimental integral molar enthalpies of mixing were plotted versus concentration of Li or Co and are shown in Figs. 1 and 2, respectively. The obtained results indicate that enthalpies of mixing in the investigated concentration range show exothermic behavior. The negative values of the integral molar enthalpy of mixing indicate preferred interactions between unlike kinds of atoms in the liquid state.Fig. 1


Enthalpies of mixing of liquid ternary Co-Li-Sn alloys.

Yakymovych A, Fürtauer S, Flandorfer H, Ipser H - Monatsh. Chem. (2014)

The integral molar enthalpy of mixing of Co–Li–Sn alloys at 1,173 K for the sections D (/ ≈ 2:98), E (/ ≈ 1:9), and F (/ ≈ 3:17) (filled circle experiment, short dashed calculated without ternary interactions, continuous dashed calculated with ternary interactions)
© Copyright Policy - OpenAccess
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC4495026&req=5

Fig2: The integral molar enthalpy of mixing of Co–Li–Sn alloys at 1,173 K for the sections D (/ ≈ 2:98), E (/ ≈ 1:9), and F (/ ≈ 3:17) (filled circle experiment, short dashed calculated without ternary interactions, continuous dashed calculated with ternary interactions)
Mentions: Experimental integral molar enthalpies of mixing were plotted versus concentration of Li or Co and are shown in Figs. 1 and 2, respectively. The obtained results indicate that enthalpies of mixing in the investigated concentration range show exothermic behavior. The negative values of the integral molar enthalpy of mixing indicate preferred interactions between unlike kinds of atoms in the liquid state.Fig. 1

Bottom Line: The investigations were performed along six sections by the addition of lithium to mixtures with the compositions [Formula: see text]/[Formula: see text] ≈ 2:98, [Formula: see text]/[Formula: see text] ≈ 1:9, and [Formula: see text]/[Formula: see text] ≈ 3:17 as well as by the addition of cobalt to mixtures with the compositions [Formula: see text]/[Formula: see text] ≈ 3:17, [Formula: see text]/[Formula: see text] ≈ 1:2, and [Formula: see text]/[Formula: see text] ≈ 1:1 at a temperature of 1,173 K.The Co-Li-Sn system shows exothermic behavior of the integral molar enthalpy of mixing in the investigated concentration range.The integral molar enthalpy of mixing of liquid Co-Li system was calculated by Miedema's model to fit our measured ternary data using an extended Redlich-Kister-Muggianu model for substitutional solutions.

View Article: PubMed Central - PubMed

Affiliation: Department of Inorganic Chemistry (Materials Chemistry), University of Vienna, Vienna, Austria.

ABSTRACT

Abstract: The partial and integral molar enthalpies of mixing of liquid Co-Li-Sn alloys were determined using drop calorimetry. The investigations were performed along six sections by the addition of lithium to mixtures with the compositions [Formula: see text]/[Formula: see text] ≈ 2:98, [Formula: see text]/[Formula: see text] ≈ 1:9, and [Formula: see text]/[Formula: see text] ≈ 3:17 as well as by the addition of cobalt to mixtures with the compositions [Formula: see text]/[Formula: see text] ≈ 3:17, [Formula: see text]/[Formula: see text] ≈ 1:2, and [Formula: see text]/[Formula: see text] ≈ 1:1 at a temperature of 1,173 K. The Co-Li-Sn system shows exothermic behavior of the integral molar enthalpy of mixing in the investigated concentration range. The integral molar enthalpy of mixing of liquid Co-Li system was calculated by Miedema's model to fit our measured ternary data using an extended Redlich-Kister-Muggianu model for substitutional solutions.

No MeSH data available.