Experimental thermodynamic study of intermetallic phases in the binary Ag-Te system by an improved EMF method

Fiseha Tesfaye; Pekka Taskinen; Markus Aspiala; Dawei Feng

doi:10.1016/j.intermet.2012.10.009

Experimental thermodynamic study of intermetallic phases in the binary Ag-Te system by an improved EMF method

Fiseha Tesfaye^*
, Pekka Taskinen
, Markus Aspiala
, Dawei Feng

^*Tämän työn vastaava kirjoittaja

Tutkimustuotos: Lehtiartikkeli › Artikkeli › Tieteellinen › vertaisarvioitu

23 Sitaatiot (Scopus)

Abstrakti

A thermodynamic study of the solid two-phase regions of the binary Ag-Te system was made by an improved EMF method, using fast ion conductor RbAg₄I₅ as the solid electrolyte. The EMF measurements were made on three galvanic cells: [Ag RbAg₄I₅ Ag₅Te₃ + Te], [Ag RbAg₄I₅ Ag₅Te₃ + Ag_1.9Te] and [Ag RbAg₄I₅ Ag_1.9Te + Ag₂Te]. Based on the results obtained, the EMF for each equilibrium phase assembly was expressed as a function of temperature, in the different regions of thermal stability of the substances. By using the observed EMF and temperature relations, the thermodynamic functions of the stoichiometric equilibrium phase assemblages: Ag₅Te₃-Te, Ag₅Te₃-Ag_1.9Te, Ag₅Te₃-Ag₂Te and Ag₂Te-Ag_1.9Te, in the lowerature range 22-204°C, as well as phase transformation temperatures, have been determined. Agreement between the results obtained and the literature values were established.

Alkuperäiskieli	Englanti
Sivut	56-62
Sivumäärä	7
Julkaisu	Intermetallics
Vuosikerta	34
DOI - pysyväislinkit	https://doi.org/10.1016/j.intermet.2012.10.009
Tila	Julkaistu - maalisk. 2013
Julkaistu ulkoisesti	Kyllä
OKM-julkaisutyyppi	A1 Julkaistu artikkeli, soviteltu

Rahoitus

The authors are grateful to Improved Sulfide Smelting (ISS) project of the ELEMET program and Tekes , the Finnish Funding Agency for Technology and Innovation, for financial support. This work was made as a sub task of ISS, supported financially also by Boliden Harjavalta Oy, Boliden Kokkola Oy, Norilsk Nickel Finland Oy and Outotec (Finland) Oy.

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10.1016/j.intermet.2012.10.009Lisenssi: All rights reserved

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@article{e037b5df6c5442ffa04c544d7ff9fab1,

title = "Experimental thermodynamic study of intermetallic phases in the binary Ag-Te system by an improved EMF method",

abstract = "A thermodynamic study of the solid two-phase regions of the binary Ag-Te system was made by an improved EMF method, using fast ion conductor RbAg4I5 as the solid electrolyte. The EMF measurements were made on three galvanic cells: [Ag RbAg4I5 Ag5Te3 + Te], [Ag RbAg4I5 Ag5Te3 + Ag1.9Te] and [Ag RbAg4I5 Ag1.9Te + Ag2Te]. Based on the results obtained, the EMF for each equilibrium phase assembly was expressed as a function of temperature, in the different regions of thermal stability of the substances. By using the observed EMF and temperature relations, the thermodynamic functions of the stoichiometric equilibrium phase assemblages: Ag5Te3-Te, Ag5Te3-Ag1.9Te, Ag5Te3-Ag2Te and Ag2Te-Ag1.9Te, in the lowerature range 22-204°C, as well as phase transformation temperatures, have been determined. Agreement between the results obtained and the literature values were established.",

keywords = "A. Multiphase intermetallics, B. Phase transformation, B. Thermal stability, B. Thermodynamic and thermochemical properties, F. Electrochemical characterization",

author = "Fiseha Tesfaye and Pekka Taskinen and Markus Aspiala and Dawei Feng",

note = "This is my article published when I was working for Aalto University ",

year = "2013",

month = mar,

doi = "10.1016/j.intermet.2012.10.009",

language = "English",

volume = "34",

pages = "56--62",

journal = "Intermetallics",

issn = "0966-9795",

publisher = "Elsevier",

}

TY - JOUR

T1 - Experimental thermodynamic study of intermetallic phases in the binary Ag-Te system by an improved EMF method

AU - Tesfaye, Fiseha

AU - Taskinen, Pekka

AU - Aspiala, Markus

AU - Feng, Dawei

N1 - This is my article published when I was working for Aalto University

PY - 2013/3

Y1 - 2013/3

N2 - A thermodynamic study of the solid two-phase regions of the binary Ag-Te system was made by an improved EMF method, using fast ion conductor RbAg4I5 as the solid electrolyte. The EMF measurements were made on three galvanic cells: [Ag RbAg4I5 Ag5Te3 + Te], [Ag RbAg4I5 Ag5Te3 + Ag1.9Te] and [Ag RbAg4I5 Ag1.9Te + Ag2Te]. Based on the results obtained, the EMF for each equilibrium phase assembly was expressed as a function of temperature, in the different regions of thermal stability of the substances. By using the observed EMF and temperature relations, the thermodynamic functions of the stoichiometric equilibrium phase assemblages: Ag5Te3-Te, Ag5Te3-Ag1.9Te, Ag5Te3-Ag2Te and Ag2Te-Ag1.9Te, in the lowerature range 22-204°C, as well as phase transformation temperatures, have been determined. Agreement between the results obtained and the literature values were established.

AB - A thermodynamic study of the solid two-phase regions of the binary Ag-Te system was made by an improved EMF method, using fast ion conductor RbAg4I5 as the solid electrolyte. The EMF measurements were made on three galvanic cells: [Ag RbAg4I5 Ag5Te3 + Te], [Ag RbAg4I5 Ag5Te3 + Ag1.9Te] and [Ag RbAg4I5 Ag1.9Te + Ag2Te]. Based on the results obtained, the EMF for each equilibrium phase assembly was expressed as a function of temperature, in the different regions of thermal stability of the substances. By using the observed EMF and temperature relations, the thermodynamic functions of the stoichiometric equilibrium phase assemblages: Ag5Te3-Te, Ag5Te3-Ag1.9Te, Ag5Te3-Ag2Te and Ag2Te-Ag1.9Te, in the lowerature range 22-204°C, as well as phase transformation temperatures, have been determined. Agreement between the results obtained and the literature values were established.

KW - A. Multiphase intermetallics

KW - B. Phase transformation

KW - B. Thermal stability

KW - B. Thermodynamic and thermochemical properties

KW - F. Electrochemical characterization

UR - https://www.scopus.com/pages/publications/84870298107

U2 - 10.1016/j.intermet.2012.10.009

DO - 10.1016/j.intermet.2012.10.009

M3 - Article

AN - SCOPUS:84870298107

SN - 0966-9795

VL - 34

SP - 56

EP - 62

JO - Intermetallics

JF - Intermetallics

ER -

Experimental thermodynamic study of intermetallic phases in the binary Ag-Te system by an improved EMF method

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