New EMF measurements and thermodynamic evaluation of the In–Pb–Zn system

• Published in: Journal of alloys and compounds Vol. 564; pp. 49 - 54
• Main Authors: Vassiliev, V.P., Lysenko, V.A., Gong, Weiping
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 05.07.2013
• Subjects: Alloys; Electrochemical cells; EMF; In–Pb–Zn ternary alloy system; Liquid phase immiscibility; Liquids; Mathematical analysis; Mathematical models; Phase diagrams; Thermodynamic modeling; Three phase; Zinc; Thermodynamic modeling; Phase diagrams; In–Pb–Zn ternary alloy system; Liquid phase immiscibility; EMF
• ISSN: 0925-8388; 1873-4669
• DOI: 10.1016/j.jallcom.2013.02.142

Calculated vertical section of the In–Pb–Zn system at In:Zn=1:1. [Display omitted] ► EMF study and thermodynamic modeling of the system In–Pb–Zn. ► Calculation of three vertical sections. ► Calculated liquidus surface projection. Seven alloys of the In–Pb–Zn ternary system were studied in the range of 660–791K by the method of electromotive forces (EMFs), using the electrochemical cell: (−) Zn|ZnCl2+KCl+LiCl|In–Pb–Zn (+). Temperature dependencies of EMF (E(T)=a+b⋅T) were obtained for three phase regions: (I) homogeneous liquid, (II) heterogeneous liquid 1+liquid 2 and (III) heterogeneous liquid 3+solid mixtures. Based on these equations the values of chemical potential of zinc as well as phase transition temperatures were found. On the basis of the obtained and literature data, thermodynamic model of ternary liquid was proposed. The liquidus surface projection and vertical sections In0.5Pb0.5–Zn, In0.5Zn0.5–Pb, Pb0.5Zn0.5–In of the system In–Pb–Zn were calculated.