Thermodynamic Properties of Ag-Pt Alloy Measured Using a Solid Electrochemical Method

• Autorzy: Santoso I. , Taskinen P.

Identyfikatory

DOI

10.24425/118927

• Języki publikacji: EN

Abstrakty

EN

Although Ag-Pt system is crucial for several technological applications, investigations of the thermodynamic properties of this system are limited. In the present study, activity of silver at various temperatures in the platinum rich solid solution was measured by a solid electrochemical method and employing AgI as the solid electrolyte. The EMF was determined using a galvanic cell (–)|Ag|AgI|Ag – Pt alloy|C|Pt (+), which provided novel experimental data on thermodynamic properties of a Ag-Pt alloy. Activity, partial molar of Gibbs energy, enthalpy and entropy of silver in a solid solution containing 1 at % Ag between 573 and 673 K have been calculated. The results indicated that the activity of silver obtained in the present study shows a large positive deviation from the ideal Raoultian behavior. Microstructures of alloys with different compositions were also compared.

Słowa kluczowe

EN

silver conducting electrolyte; EMF method; silver; platinum; thermodynamics

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2018
• Tom: Vol. 63, iss. 1
• Strony: 191--197
• Opis fizyczny: Bibliogr. 20 poz., rys., tab., wzory

Twórcy

autor

Santoso I.

• Aalto University, School of Chemical Engineering, Metallurgical Thermodynamic and Modelling Research Group, Espoo, Finland
• Institut Teknologi Bandung, Department of Metallurgical Engineering, Bandung, Indonesia

autor

Taskinen P.

• Institut Teknologi Bandung, Department of Metallurgical Engineering, Bandung, Indonesia

Bibliografia

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Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).