Determination of Thermodynamic Properties of Ternary Al‐Cu‐Zn Alloys by Electromotive Force Method
The thermodynamic properties of ternary Al-Cu-Zn alloys containing 25-62 at.% Al have been determined by electromotive force (EMF) measurements between 420-920 deg C by an aluminum concentration cell of the type Al[AlCl sub 3 -LiCl-KCl] alloy. This concentration cell was evaluated via comparison wit...
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| Veröffentlicht in: | Journal of the Electrochemical Society 1994-04, Vol.141 (4), p.927-933 |
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| container_title | Journal of the Electrochemical Society |
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| creator | Dang Van, Tan Segers, Luc Winand, René |
| description | The thermodynamic properties of ternary Al-Cu-Zn alloys containing 25-62 at.% Al have been determined by electromotive force (EMF) measurements between 420-920 deg C by an aluminum concentration cell of the type Al[AlCl sub 3 -LiCl-KCl] alloy. This concentration cell was evaluated via comparison with known partial free energy for Al measured in liquid Al-Cu alloys by Wilder, and several liquidus temperatures of Al-Cu phase diagram have been determined. From EMF values, activities of Al with respect to mole fraction of Al in ternary Al-Cu-Zn alloys for three quasi-binary sections (x sub Cu /X sub Zn )=7/3, 1, and 3/7) at 850 deg C were determined. The negative deviation from Raoultian behavior observed was more pronounced at high x sub Cu /x sub Zn ratios in agreement with binary Al-Zn and Al-Cu phase diagrams. |
| doi_str_mv | 10.1149/1.2054859 |
| format | Article |
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This concentration cell was evaluated via comparison with known partial free energy for Al measured in liquid Al-Cu alloys by Wilder, and several liquidus temperatures of Al-Cu phase diagram have been determined. From EMF values, activities of Al with respect to mole fraction of Al in ternary Al-Cu-Zn alloys for three quasi-binary sections (x sub Cu /X sub Zn )=7/3, 1, and 3/7) at 850 deg C were determined. 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This concentration cell was evaluated via comparison with known partial free energy for Al measured in liquid Al-Cu alloys by Wilder, and several liquidus temperatures of Al-Cu phase diagram have been determined. From EMF values, activities of Al with respect to mole fraction of Al in ternary Al-Cu-Zn alloys for three quasi-binary sections (x sub Cu /X sub Zn )=7/3, 1, and 3/7) at 850 deg C were determined. The negative deviation from Raoultian behavior observed was more pronounced at high x sub Cu /x sub Zn ratios in agreement with binary Al-Zn and Al-Cu phase diagrams.</description><subject>ALLOYS</subject><subject>ALUMINIUM ALLOYS</subject><subject>COPPER ALLOYS</subject><subject>ENERGY</subject><subject>ENTHALPY</subject><subject>ENTROPY</subject><subject>FREE ENERGY</subject><subject>MATERIALS SCIENCE</subject><subject>MEASURING METHODS</subject><subject>PHASE STUDIES</subject><subject>PHYSICAL PROPERTIES 360104 -- Metals & Alloys-- Physical Properties</subject><subject>THERMODYNAMIC PROPERTIES</subject><subject>ZINC ALLOYS</subject><issn>0013-4651</issn><issn>1945-7111</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1994</creationdate><recordtype>article</recordtype><recordid>eNotkM1KAzEUhYMoWKsL3yC4EFxMze38Zllqq0JFF3XjJmSSOzQyM6lJKszOR_AZfRKj7eZeDvfjcs4h5BLYBCDjtzCZsjyrcn5ERsCzPCkB4JiMGIM0yYocTsmZ9-9RQpWVI9LcYUDXmV4GY3tqG7reRG310MvOKPri7BZdMOj_b-h66QY6a3--vue7ON76KFo7eFoPdNGiCs52NphPpEvrFNInDBurz8lJI1uPF4c9Jq_LxXr-kKye7x_ns1Wi0hxCIqGRmhesyYFXFeN1zUue6RxrXsnoWRdaloiFYiClzmK2UuuyYUoWCirU6Zhc7f9aH4zwygRUG2X7PhoTJbCqSKsIXe-hrbMfO_RBdMYrbFvZo915MS3SvMgYi-DNHlTOeu-wEVtnuliAACb-6hYgDnWnvwDwdJ0</recordid><startdate>19940401</startdate><enddate>19940401</enddate><creator>Dang Van, Tan</creator><creator>Segers, Luc</creator><creator>Winand, René</creator><scope>AAYXX</scope><scope>CITATION</scope><scope>7QF</scope><scope>7SE</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope><scope>OTOTI</scope></search><sort><creationdate>19940401</creationdate><title>Determination of Thermodynamic Properties of Ternary Al‐Cu‐Zn Alloys by Electromotive Force Method</title><author>Dang Van, Tan ; Segers, Luc ; Winand, René</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c351t-a1fad960f5198809bb9794d5eb98a001d6da7ee6c01aad47117dd7f0ca6c18ed3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1994</creationdate><topic>ALLOYS</topic><topic>ALUMINIUM ALLOYS</topic><topic>COPPER ALLOYS</topic><topic>ENERGY</topic><topic>ENTHALPY</topic><topic>ENTROPY</topic><topic>FREE ENERGY</topic><topic>MATERIALS SCIENCE</topic><topic>MEASURING METHODS</topic><topic>PHASE STUDIES</topic><topic>PHYSICAL PROPERTIES 360104 -- Metals & Alloys-- Physical Properties</topic><topic>THERMODYNAMIC PROPERTIES</topic><topic>ZINC ALLOYS</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Dang Van, Tan</creatorcontrib><creatorcontrib>Segers, Luc</creatorcontrib><creatorcontrib>Winand, René</creatorcontrib><collection>CrossRef</collection><collection>Aluminium Industry Abstracts</collection><collection>Corrosion Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><collection>OSTI.GOV</collection><jtitle>Journal of the Electrochemical Society</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Dang Van, Tan</au><au>Segers, Luc</au><au>Winand, René</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Determination of Thermodynamic Properties of Ternary Al‐Cu‐Zn Alloys by Electromotive Force Method</atitle><jtitle>Journal of the Electrochemical Society</jtitle><date>1994-04-01</date><risdate>1994</risdate><volume>141</volume><issue>4</issue><spage>927</spage><epage>933</epage><pages>927-933</pages><issn>0013-4651</issn><eissn>1945-7111</eissn><abstract>The thermodynamic properties of ternary Al-Cu-Zn alloys containing 25-62 at.% Al have been determined by electromotive force (EMF) measurements between 420-920 deg C by an aluminum concentration cell of the type Al[AlCl sub 3 -LiCl-KCl] alloy. This concentration cell was evaluated via comparison with known partial free energy for Al measured in liquid Al-Cu alloys by Wilder, and several liquidus temperatures of Al-Cu phase diagram have been determined. From EMF values, activities of Al with respect to mole fraction of Al in ternary Al-Cu-Zn alloys for three quasi-binary sections (x sub Cu /X sub Zn )=7/3, 1, and 3/7) at 850 deg C were determined. The negative deviation from Raoultian behavior observed was more pronounced at high x sub Cu /x sub Zn ratios in agreement with binary Al-Zn and Al-Cu phase diagrams.</abstract><cop>United States</cop><doi>10.1149/1.2054859</doi><tpages>7</tpages></addata></record> |
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| ispartof | Journal of the Electrochemical Society, 1994-04, Vol.141 (4), p.927-933 |
| issn | 0013-4651 1945-7111 |
| language | eng |
| recordid | cdi_osti_scitechconnect_7108638 |
| source | IOP Publishing Journals |
| subjects | ALLOYS ALUMINIUM ALLOYS COPPER ALLOYS ENERGY ENTHALPY ENTROPY FREE ENERGY MATERIALS SCIENCE MEASURING METHODS PHASE STUDIES PHYSICAL PROPERTIES 360104 -- Metals & Alloys-- Physical Properties THERMODYNAMIC PROPERTIES ZINC ALLOYS |
| title | Determination of Thermodynamic Properties of Ternary Al‐Cu‐Zn Alloys by Electromotive Force Method |
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