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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.

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.


Measured sections and alloy compositions in the ternary Co–Li–Sn system at 1,173 K: (A) / ≈ 3:17, (B) / ≈ 1:2, (C) / ≈ 1:1, (D) / ≈ 2:98, (E) / ≈ 1:9, and (F) / ≈ 3:17; the estimated liquidus limit is marked by the dashed line
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Fig5: Measured sections and alloy compositions in the ternary Co–Li–Sn system at 1,173 K: (A) / ≈ 3:17, (B) / ≈ 1:2, (C) / ≈ 1:1, (D) / ≈ 2:98, (E) / ≈ 1:9, and (F) / ≈ 3:17; the estimated liquidus limit is marked by the dashed line

Mentions: In this case no discontinuity but a clear kink followed by rather constant values appears in the course of the partial molar enthalpies of mixing. The constant partial values indicate a transition into a multiphase region, which occurred after a number of drops of Co into the liquid Li0.15Sn0.85 alloy. The corresponding points indicating the liquidus boundary were determined only based on the partial molar enthalpy of mixing data and added to Fig. 5. The values within the shadowed fields in Tables 1 and 2 are valid for compositions outside the homogeneous liquid phase.


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

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

Measured sections and alloy compositions in the ternary Co–Li–Sn system at 1,173 K: (A) / ≈ 3:17, (B) / ≈ 1:2, (C) / ≈ 1:1, (D) / ≈ 2:98, (E) / ≈ 1:9, and (F) / ≈ 3:17; the estimated liquidus limit is marked by the dashed line
© Copyright Policy - OpenAccess
Related In: Results  -  Collection

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getmorefigures.php?uid=PMC4495026&req=5

Fig5: Measured sections and alloy compositions in the ternary Co–Li–Sn system at 1,173 K: (A) / ≈ 3:17, (B) / ≈ 1:2, (C) / ≈ 1:1, (D) / ≈ 2:98, (E) / ≈ 1:9, and (F) / ≈ 3:17; the estimated liquidus limit is marked by the dashed line
Mentions: In this case no discontinuity but a clear kink followed by rather constant values appears in the course of the partial molar enthalpies of mixing. The constant partial values indicate a transition into a multiphase region, which occurred after a number of drops of Co into the liquid Li0.15Sn0.85 alloy. The corresponding points indicating the liquidus boundary were determined only based on the partial molar enthalpy of mixing data and added to Fig. 5. The values within the shadowed fields in Tables 1 and 2 are valid for compositions outside the homogeneous liquid phase.

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.