Enthalpies of formation of Cd-Pr intermetallic compounds and thermodynamic assessment of the Cd-Pr system

Thomas L. Reichmann; Klaus W. Richter; Simona Delsante; Gabriella Borzone; Herbert Ipser

doi:10.1016/j.calphad.2014.06.005

Enthalpies of formation of Cd-Pr intermetallic compounds and thermodynamic assessment of the Cd-Pr system

Thomas L. Reichmann (Corresponding author)
, Klaus W. Richter
, Simona Delsante
, Gabriella Borzone
, Herbert Ipser

Publications: Contribution to journal › Article › Peer Reviewed

Abstract

In the present study standard enthalpies of formation were measured by reaction and solution calorimetry at stoichiometric compositions of Cd ₂Pr, Cd ₃Pr, Cd ₅₈Pr ₁₃ and Cd ₆Pr. The corresponding values were determined to be -46.0, -38.8, -35.2 and -24.7 kJ/mol(at), respectively. These data together with thermodynamic data and phase diagram information from literature served as input data for a CALPHAD-type optimization of the Cd-Pr phase diagram. The complete composition range could be described precisely with the present models, both with respect to phase equilibria as well as to thermodynamic input data. The thermodynamic parameters of all intermetallic compounds were modelled following Neumann-Kopp rule. Temperature dependent contributions to the individual Gibbs energies were used for all compounds. Extended solid solubilities are well described for the low- and high-temperature modifications of Pr and also for the intermetallic compound CdPr. A quite good agreement with all viable data available from literature was found and is presented.

Original language	English
Pages (from-to)	56-62
Number of pages	7
Journal	CALPHAD: the international research journal for calculation of phase diagrams
Volume	47
DOIs	https://doi.org/10.1016/j.calphad.2014.06.005
Publication status	Published - Dec 2014

Funding

The authors want to thank the Austrian Science Fund (FWF) for financial support of this study under Project no. P 23270-N19, and the Scientific-Technical Cooperation between Austria and India (Project no. IN 05/2011). They are also grateful to Dr. R. Ganesan, from the Indira Gandhi Centre for Atomic Research (Kalpakkam, India), for providing experimental C<INF>p</INF> values for Cd<INF>11</INF>nPr prior to publication.

Austrian Fields of Science 2012

104003 Inorganic chemistry
104011 Materials chemistry

Keywords

CALPHAD
Phase diagram Cd-Pr
Enthalpy of formation
Alloys
LIQUID-METAL
REDUCTIVE EXTRACTION
RARE-EARTH
LICL-KCL
ELEMENTS
CADMIUM
BEHAVIOR
SALT
FUEL
ACTINIDE

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10.1016/j.calphad.2014.06.005

Cite this

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title = "Enthalpies of formation of Cd-Pr intermetallic compounds and thermodynamic assessment of the Cd-Pr system",

abstract = "In the present study standard enthalpies of formation were measured by reaction and solution calorimetry at stoichiometric compositions of Cd 2Pr, Cd 3Pr, Cd 58Pr 13 and Cd 6Pr. The corresponding values were determined to be -46.0, -38.8, -35.2 and -24.7 kJ/mol(at), respectively. These data together with thermodynamic data and phase diagram information from literature served as input data for a CALPHAD-type optimization of the Cd-Pr phase diagram. The complete composition range could be described precisely with the present models, both with respect to phase equilibria as well as to thermodynamic input data. The thermodynamic parameters of all intermetallic compounds were modelled following Neumann-Kopp rule. Temperature dependent contributions to the individual Gibbs energies were used for all compounds. Extended solid solubilities are well described for the low- and high-temperature modifications of Pr and also for the intermetallic compound CdPr. A quite good agreement with all viable data available from literature was found and is presented.",

keywords = "CALPHAD, Phase diagram Cd-Pr, Enthalpy of formation, Alloys, LIQUID-METAL, REDUCTIVE EXTRACTION, RARE-EARTH, LICL-KCL, ELEMENTS, CADMIUM, BEHAVIOR, SALT, FUEL, ACTINIDE",

author = "Reichmann, \{Thomas L.\} and Richter, \{Klaus W.\} and Simona Delsante and Gabriella Borzone and Herbert Ipser",

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doi = "10.1016/j.calphad.2014.06.005",

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Enthalpies of formation of Cd-Pr intermetallic compounds and thermodynamic assessment of the Cd-Pr system. / Reichmann, Thomas L. (Corresponding author); Richter, Klaus W.; Delsante, Simona et al.
In: CALPHAD: the international research journal for calculation of phase diagrams, Vol. 47, 12.2014, p. 56-62.

Publications: Contribution to journal › Article › Peer Reviewed

TY - JOUR

T1 - Enthalpies of formation of Cd-Pr intermetallic compounds and thermodynamic assessment of the Cd-Pr system

AU - Reichmann, Thomas L.

AU - Richter, Klaus W.

AU - Delsante, Simona

AU - Borzone, Gabriella

AU - Ipser, Herbert

N1 - Accession Number: WOS:000346224700006

PY - 2014/12

Y1 - 2014/12

N2 - In the present study standard enthalpies of formation were measured by reaction and solution calorimetry at stoichiometric compositions of Cd 2Pr, Cd 3Pr, Cd 58Pr 13 and Cd 6Pr. The corresponding values were determined to be -46.0, -38.8, -35.2 and -24.7 kJ/mol(at), respectively. These data together with thermodynamic data and phase diagram information from literature served as input data for a CALPHAD-type optimization of the Cd-Pr phase diagram. The complete composition range could be described precisely with the present models, both with respect to phase equilibria as well as to thermodynamic input data. The thermodynamic parameters of all intermetallic compounds were modelled following Neumann-Kopp rule. Temperature dependent contributions to the individual Gibbs energies were used for all compounds. Extended solid solubilities are well described for the low- and high-temperature modifications of Pr and also for the intermetallic compound CdPr. A quite good agreement with all viable data available from literature was found and is presented.

AB - In the present study standard enthalpies of formation were measured by reaction and solution calorimetry at stoichiometric compositions of Cd 2Pr, Cd 3Pr, Cd 58Pr 13 and Cd 6Pr. The corresponding values were determined to be -46.0, -38.8, -35.2 and -24.7 kJ/mol(at), respectively. These data together with thermodynamic data and phase diagram information from literature served as input data for a CALPHAD-type optimization of the Cd-Pr phase diagram. The complete composition range could be described precisely with the present models, both with respect to phase equilibria as well as to thermodynamic input data. The thermodynamic parameters of all intermetallic compounds were modelled following Neumann-Kopp rule. Temperature dependent contributions to the individual Gibbs energies were used for all compounds. Extended solid solubilities are well described for the low- and high-temperature modifications of Pr and also for the intermetallic compound CdPr. A quite good agreement with all viable data available from literature was found and is presented.

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KW - Enthalpy of formation

KW - Alloys

KW - LIQUID-METAL

KW - REDUCTIVE EXTRACTION

KW - RARE-EARTH

KW - LICL-KCL

KW - ELEMENTS

KW - CADMIUM

KW - BEHAVIOR

KW - SALT

KW - FUEL

KW - ACTINIDE

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DO - 10.1016/j.calphad.2014.06.005

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SN - 0364-5916

VL - 47

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JO - CALPHAD: the international research journal for calculation of phase diagrams

JF - CALPHAD: the international research journal for calculation of phase diagrams

ER -

Enthalpies of formation of Cd-Pr intermetallic compounds and thermodynamic assessment of the Cd-Pr system

Abstract

Funding

Austrian Fields of Science 2012

Keywords

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