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Thermodynamic properties of Ag–Au alloys measured by a solid-state electrolyte EMF method
Santoso I.a,b, Taskinen P.a, Jokilaakso A.a, Lindberg D.a
a School of Chemical Engineering, Aalto University, Espoo, Finland
b Department of Metallurgical Engineering, Institut Teknologi Bandung, Bandung, Indonesia
[vc_row][vc_column][vc_row_inner][vc_column_inner][vc_separator css=”.vc_custom_1624529070653{padding-top: 30px !important;padding-bottom: 30px !important;}”][/vc_column_inner][/vc_row_inner][vc_row_inner layout=”boxed”][vc_column_inner width=”3/4″ css=”.vc_custom_1624695412187{border-right-width: 1px !important;border-right-color: #dddddd !important;border-right-style: solid !important;border-radius: 1px !important;}”][vc_empty_space][megatron_heading title=”Abstract” size=”size-sm” text_align=”text-left”][vc_column_text]© 2020 Elsevier B.V.Although Ag–Au alloys are vital for many industries and technological applications, thermodynamic properties data of Ag–Au solid solution are very limited, especially at low temperatures. In the present investigation, activities of silver were directly measured between 550 and 700 K by a solid electromotive force (EMF) method and AgI as the pure ionic conducting electrolyte resembled in a galvanic cell notation as -CAgAgIAlloyC(+). From the silver activity data and by employing Gibbs–Duhem integration, partial thermodynamic properties of silver and gold were calculated. Integral thermodynamic properties such as Gibbs energy of mixing, mixing enthalpy and entropy of silver and gold to form the alloys have been determined. Thermodynamic properties were also expressed by analytical equations of the partial excess properties as a function of temperature and composition, providing a user-friendly tool to generate other thermodynamic properties to be used for many purposes.[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Author keywords” size=”size-sm” text_align=”text-left”][vc_column_text]Analytical equations,Conducting electrolyte,Electromotive force (EMF),Excess properties,Low temperatures,Solid-state electrolyte,Technological applications,User-friendly tool[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Indexed keywords” size=”size-sm” text_align=”text-left”][vc_column_text]EMF,Gold,Intermetallic,Silver,Thermodynamics[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Funding details” size=”size-sm” text_align=”text-left”][vc_column_text][{‘$’: ‘The research was funded by the Symbiosis of metals production and nature (SYMMET) project, grant number 3891/31/2018 from Business Finland. Academy of Finland’s RawMatTERS Finland Infrastructure (RAMI), based at Aalto University, VTT Technical Research Centre and Gelogical Survey of Finland (GTK), was used by this investigation.’}, {‘$’: “The research was funded by the Symbiosis of metals production and nature (SYMMET) project, grant number 3891/31/2018 from Business Finland. Academy of Finland’s RawMatTERS Finland Infrastructure (RAMI), based at Aalto University, VTT Technical Research Centre and Gelogical Survey of Finland (GTK), was used by this investigation.”}][/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”DOI” size=”size-sm” text_align=”text-left”][vc_column_text]https://doi.org/10.1016/j.tca.2020.178658[/vc_column_text][/vc_column_inner][vc_column_inner width=”1/4″][vc_column_text]Widget Plumx[/vc_column_text][/vc_column_inner][/vc_row_inner][/vc_column][/vc_row][vc_row][vc_column][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][/vc_column][/vc_row]