Remarks on the role of thermochemical data in intermetallic crystallochemistry

Borzone, G.; Raggio, R.

doi:10.1016/j.jallcom.2003.08.018

Cited by 16 publications

(4 citation statements)

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“…Calorimetric measurements were performed with a laboratory-built high-temperature drop calorimeter, a detailed description of which is reported elsewhere. , Following the composition of the alloys, the working calorimeter temperature was set at values included between (923 and 1073) K. Each calorimetric measurement is divided into two runs: a “reaction run” and a “reference run”; an exhaustive description of the procedure is given in ref . To perform a measurement, after thermal equilibration, the sample is dropped from an overstanding thermostat (at T = T 0 = 300 K) into the calorimeter.…”

Section: Methodsmentioning

confidence: 99%

Thermodynamic Investigation of the Ni-Rich Side of the Ni−P System

et al. 2010

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Ni(P) is used in electronics as a protective layer during the soldering process. New thermodynamic information on Ni-P alloys has been obtained in the Ni-rich part (up to the molar fraction x P ) 0.40) by using a high-temperature direct drop calorimeter. The experimental trend of ∆ f H°[kJ • (mol of atoms) -1 ] of the Ni-P alloys versus composition (x P ) has been plotted and the following standard enthalpy of formation [∆ f H°( 2 kJ • (mol of atoms) -1 ] values interpolated for the Ni-rich phases: -48.0 (Ni 3 P), -55.0 (Ni 5 P 2 ), -56.0 (Ni 12 P 5 ), and -61.0 (NiP 2 ). Our results have been compared with those reported in the literature and discussed.

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Section: Methodsmentioning

confidence: 99%

Thermodynamic Investigation of the Ni-Rich Side of the Ni−P System

et al. 2010

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“…All calorimetric experiments were performed using a high temperature drop calorimeter described repeatedly in literature [18,19] . Heat effects were evaluated following a series of calibration runs by dropping specimens of known heat content, typically pure Ag, into the calorimeter.…”

Section: Methodsmentioning

confidence: 99%

“…The accuracy of the measurement and the evaluation of the error are discussed in detail in Refs. [18–20] .…”

Section: Methodsmentioning

confidence: 99%

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

Reichmann¹,

Richter²,

Delsante³

et al. 2014

Calphad

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In the present study standard enthalpies of formation were measured by reaction and solution calorimetry at stoichiometric compositions of Cd2Pr, Cd3Pr, Cd58Pr13 and Cd6Pr. 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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“…Calorimetric measurements were performed by using a hightemperature drop calorimeter made up in our laboratory, the details of which have been described elsewhere [18,19]. It consists of a receiving vessel thermostatted at a selected high temperature (T c ).…”

Section: Methodsmentioning

confidence: 99%