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A brief summary of thermodynamic properties of various ternary systems investigated by EMF and Calorimetric method Sabine Knott and Adolf Mikula Institute.

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Presentation on theme: "A brief summary of thermodynamic properties of various ternary systems investigated by EMF and Calorimetric method Sabine Knott and Adolf Mikula Institute."— Presentation transcript:

1 A brief summary of thermodynamic properties of various ternary systems investigated by EMF and Calorimetric method Sabine Knott and Adolf Mikula Institute of Inorganic Chemistry-Materials Chemistry Währingerstr. 42, A-1090 Vienna, Austria

2 Investigated Systems EMF and Calorimetry EMF Calorimetry AlSnZn AgSnZn CuSnZn BiInZn BiSn AgBiSn CuInZn PdSnZn CuIn BiInSn CuInSn AgAuSn AuCuSn AgAlSn 14 binary and ternary systems

3 EMF Measurements Partial Quantities __ ΔG = -zFE  = exp (ΔG/RT ) Gibbs Helmholtz Equation __ ΔH = -z(∂E/∂T)F-zFE __ ΔS = z(∂E/∂T)F

4 EMF Apparatus Electrodes: Mo or W wire Quartz container Valve for evacuation sample Liquid electrolyte LiCl/KCl/XCly (X= Al, Zn, Sn), (y=2,3)

5 EMF Measurements Integral Quantities Gibbs-Duhem Equation x ΔG E M =(1-x x )[ΔG E M,x=0 + ∫  dx x ] y/z 0 __ Δ G E x = RT ln  x  = ln  x / (1-x x ) 2

6 Drop Calorimetry Setaram Microcalorimeter 200-1000°C, automatic sample device (max. 30 drops/measurement) controller/data aquisition with LabView, evaluation with HiQ Calibration with NIST-sapphire

7 Calorimetry H Signal = n i. (H sample,FT -H sample,DT ) + H Reaction __ ΔH i = (H Signal /n i ) – (H sample,FT -H sample,DT ) ΔH MIX =H bin + ΣH Reaction /(n+Σn i )

8 Redlich Kister Muggianu Polynom Isoenthalpy lines of the ternary Cu-In-Sn system at 1073 K L ν i,j binary interaction parameter M ternary interaction parameter

9 Pd─Sn─Zn

10 Bi─In─Zn Calorimetry, 500°CEMF, 600°C

11 Bi─In─Zn Enthalpy of mixing measured by EMF and Calorimetry Y Djaballah, L Bennour, F Bouharkat and A Belgacem-Bouzida Modelling Simul. Mater. Sci. Eng. 13 (2005) 361–369

12 BiInZn Calorimetric measurement EMF measurement

13 Bi─In─Zn Y Djaballah, L Bennour, F Bouharkat and A Belgacem-Bouzida Modelling Simul. Mater. Sci. Eng. 13 (2005) 361–369

14 Ternary AgAuSn System Verschiedene Modelle: Extrapolationsmodelle nach Toop, Muggianu und Kohler Chou Modell Dragana Živković, Dragan Manasijević, Živan Živković, J. of the University of Chemical Technology and Metallurgy, (2004) 39(1), 63-76 Z.Li, M.Dallegri, S.Knott, ccepted for publication in J. of Alloys and Compounds

15 Ag-Bi-Sn vertical cross section Ag:Bi = 1:1 Δ-heating curve  -cooling curve Calcs based on [01Oht] Calcs based on [94Kat]

16 Cu-In 973K 1073K, 1373K

17 CuInSn Phase Diagram at different temperatures Liu et al., J. Electronic Materials, 30(9), 2001, 1093 Experimental Procedure: Calorimetric Measurements at 1073 K and 973 K

18 Comparison Cu-In-Sn Kalorimetrie vs. Knudsen A. Popovic, L. Bencze, International Journal of Mass Spectrometry 255 (2006) 41–49

19 Wetting angles Systems: CuInSn, 5 at.%Cu AgCuSn 17 different alloys Copper and Nickel substrate Collophonium flux

20 Acknowledgements Dr. Zuoan Li FWF P16491–N11 FWF P19469–N19 COST 531

21 Thank you for your attention

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