Thermochemistry of binary liquid alloys of copper with barium and lanthanide metals (europium, dysprosium and ytterbium)

Usenko, Natalia; Иванов, М. И.; Petiuh, V. M.; Witusiewicz, V.T.

doi:10.1016/0925-8388(93)90391-y

Cited by 48 publications

(18 citation statements)

References 11 publications

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“…The experiments used a high-temperature calorimeter, which was described in detail previously [5], in purified helium under an excessive pressure of 10 5 Pa at 1600 K. Partial and integral mixing enthalpies ΔH of Co-Sb liquid alloys were determined over a wide range of compositions. According to [6], the steam pressure above liquid antimony is quite high at 1600 K (about 1.7 · 10 4 Pa) and greatly increases at higher temperatures.…”

Section: Experimental Techniquementioning

confidence: 99%

Thermal chemistry and short-range order in Co-Sb melts

Иванов

Tedenac

Bulanova

et al. 2007

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The enthalpies of mixing for the liquid Co-Sb alloys are measured by isoperibolic calorimetry at 1600 K over the whole concentration range relative to liquid Sb and undercooled liquid Co. The minimal integral enthalpy of mixing is −6.3 ± 0.6 kJ/ mole at x Co = 0.50. Activity of components, Gibbs energy, and the entropy of mixing are calculated using a short-range ordering model considering CoSb associates formed in molten Co-Sb alloys.

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Section: Experimental Techniquementioning

confidence: 99%

Thermal chemistry and short-range order in Co-Sb melts

Иванов

Tedenac

Bulanova

et al. 2007

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“…Regarding the values of mixing enthalpies and their composition dependence, these systems are similar to the copper-barium system [37], with which they form a separate series of properties varying with the metal atomic number. After considering the features peculiar to interaction of europium and ytterbium with copper, we can share the conclusions made in [13] on the divalent state of these metals in melts with copper.…”

Section: Variation Of Thermodynamic Mixing Functions In Series Of Cu-mentioning

confidence: 94%

“…The corresponding values are x Eu = 0.20 and x Yb = 0.30. Since these fugitive components may evaporate during experiments [13], the latter values may be revised to be decreased.…”

Section: Composition Dependence Of Thermodynamic Propertiesmentioning

confidence: 98%

“…The level of knowledge on the systems in the series and their various properties greatly differs. The mixing enthalpies ΔH of the following liquid alloys have been studied in greatest detail: Cu-Sc [1-4], Cu-Y [1, 2, 5-7], Cu-La [1, 2,8], Cu-Ce [8][9][10], Cu-Pr and Cu-Nd [10,11], Cu-Sm [12], Cu-Eu [13], Cu-Gd [14][15][16], Cu-Dy [13], Cu-Ho [15], Cu-Er [17,18], Cu-Tm [15], Cu-Yb [13], and Cu-Lu [1, 15,16]. The excess heat capacity ex P C Δ was studied in a few papers: Cu-Y [19], Cu-La [19,20], Cu-Ce [19,21], and Cu-Pr, Cu-Nd [19].…”

Section: Composition Dependence Of Thermodynamic Propertiesmentioning

confidence: 99%

“…At present, the number of publications that represent original experimental information on the thermodynamic properties of Cu-REM melts is close to 30. The studied properties include the partial and integral mixing enthalpies of components [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18], high-temperature content of the enthalpy [19] and heat capacity [20,21] of liquid alloys, and activity [22][23][24][25][26] of components. The thermodynamic properties of liquid alloys in sixteen systems, excepting the systems of copper with promethium and terbium, have been experimentally studied to varying extents.…”

Section: Introductionmentioning

confidence: 99%

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Temperature–composition dependence of thermodynamic mixing functions of liquid alloys of copper with rare-earth metals

Турчанин

2011

Powder Metall Met Ceram

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The composition and temperature dependences of thermodynamic functions of mixing in liquid alloys of copper with rare-earth metals and their variation in the series are considered. It is shown for majority of systems in the series that the most intensive interaction between components is observed in the composition range enriched with copper. The negative deviations of thermodynamic properties of mixing increase with decreasing temperature. The main features of the temperaturecomposition dependence are explained under the assumption that chemical short-range ordering like a chemical compound forms in the Cu-REM liquid alloys. The temperature-composition dependence of thermodynamic functions of mixing is described in the framework of the ideal associated solution model.

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ChemInform Abstract: Thermochemistry of Binary Liquid Alloys of Copper with Barium and Lanthanoid Metals (Europium, Dysprosium and Ytterbium).

et al. 1993

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1993 thermodynamic functions, thermochemistry thermodynamic functions, thermochemistry E 3000 13 -021 Thermochemistry of Binary Liquid Alloys of Copper with Barium and Lanthanoid Metals (Europium, Dysprosium and Ytterbium). -The heats of mixing for binary liquid alloys of Cu with Ba and with the rare earth metals Eu and Yb in the Cu-rich concentration range and in the Cu-Dy system over the total concentration range are measured by isoperibolic calorimetry. The enthalpies of mixing increase with increasing atomic number. An increase of the component interaction energy is found in the sequence Ba ¡ Eu ¡ Yb ¡ Dy. Model analysis of the results is discussed. -(USENKO, N. I.; IVANOV, M. I.; PETIUH, V. M.; WITUSIEWICZ, V. T.; J.

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Thermochemistry of binary liquid alloys of copper with barium and lanthanide metals (europium, dysprosium and ytterbium)

Cited by 48 publications

References 11 publications

Thermal chemistry and short-range order in Co-Sb melts

Thermal chemistry and short-range order in Co-Sb melts

Temperature–composition dependence of thermodynamic mixing functions of liquid alloys of copper with rare-earth metals

ChemInform Abstract: Thermochemistry of Binary Liquid Alloys of Copper with Barium and Lanthanoid Metals (Europium, Dysprosium and Ytterbium).

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